Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2021	Feb. 23, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-15393
Entity Registrant Name	HEARTLAND FINANCIAL USA, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	42-1405748
Entity Address, Address Line One	1398 Central Avenue,
Entity Address, City or Town	Dubuque
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	52001
City Area Code	(563)
Local Phone Number	589-2100
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Documents Incorporated by Reference	Portions of the Proxy Statement for the 2022 Annual Meeting of Stockholders, which will be filed no later than 120 days after December 31, 2021, are incorporated by reference into Part III.
Entity Central Index Key	0000920112
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		42,278,047
Entity Public Float			$ 1,898,763,868
Common Stock $1.00 par value
Entity Information [Line Items]
Title of 12(b) Security	Common Stock $1.00 par value
Trading Symbol	HTLF
Security Exchange Name	NASDAQ
Depositary Shares, each representing 1/400th interest in a share of 7.00% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing 1/400th interest in a share of 7.00% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol	HTLFP
Security Exchange Name	NASDAQ

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2021
Audit Information [Abstract]
Auditor Location	Des Moines, Iowa
Auditor Name	KPMG LLP
Auditor Firm ID	185

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 163,895	$ 219,243
Interest bearing deposits with other banks and other short-term investments	271,704	118,660
Cash and cash equivalents	435,599	337,903
Time deposits in other financial institutions	2,894	3,129
Securities:
Carried at fair value (cost of $7,536,338 at December 31, 2021, and cost of $6,024,225 at December 31, 2020)	7,530,374	6,127,975
Held to maturity, net of allowance for credit losses of $0 at December 31, 2021, and $51 at December 31, 2020 (fair value of $94,139 at December 31, 2021, and $100,041 at December 31, 2020)	84,709	88,839
Other investments, at cost	82,567	75,253
Loans held for sale	21,640	57,949
Loans receivable:
Held to maturity	9,954,572	10,023,051
Allowance for credit losses	(110,088)	(131,606)
Loans receivable, net	9,844,484	9,891,445
Premises, furniture and equipment, net	204,999	219,595
Premises, furniture and equipment held for sale	10,828	6,499
Other real estate, net	1,927	6,624
Goodwill	576,005	576,005
Core deposit intangibles and customer relationship intangibles, net	32,988	42,383
Servicing rights, net	6,890	6,052
Cash surrender value on life insurance	191,722	187,664
Other assets	246,923	281,024
TOTAL ASSETS	19,274,549	17,908,339
Deposits:
Demand	6,495,326	5,688,810
Savings	8,897,909	8,019,704
Time	1,024,020	1,271,391
Total deposits	16,417,255	14,979,905
Short-term borrowings	131,597	167,872
Other borrowings	372,072	457,042
Accrued expenses and other liabilities	171,447	224,289
TOTAL LIABILITIES	17,092,371	15,829,108
STOCKHOLDERS' EQUITY:
Common stock (par value $1 per share; 60,000,000 shares authorized at both December 31, 2021 and December 31, 2020; issued 42,275,264 shares at December 31, 2021, and 42,093,862 shares at December 31, 2020)	42,275	42,094
Capital surplus	1,071,956	1,062,083
Retained earnings	962,994	791,630
Accumulated other comprehensive income (loss)	(5,752)	72,719
TOTAL STOCKHOLDERS' EQUITY	2,182,178	2,079,231
TOTAL LIABILITIES AND EQUITY	19,274,549	17,908,339
Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series A Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series B Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series C Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series D Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series E preferred stock
STOCKHOLDERS' EQUITY:
Preferred stock	$ 110,705	$ 110,705

CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Amortized cost of securities	$ 7,536,338	$ 6,024,225
Held to maturity securities, fair value	0	(51)
Held to maturity securities, fair value	$ 94,139	$ 100,041
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	42,275,264	42,093,862
Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	6,104	6,104
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series A Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	16,000	16,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series B Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	81,698	81,698
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series C Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	81,698	81,698
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series D Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	3,000	3,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series E preferred stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	11,500	11,500
Preferred stock, shares issued (in shares)	11,500	11,500
Preferred stock, shares outstanding (in shares)	11,500	11,500
Obligations of states and political subdivisions
Held to maturity securities, fair value	$ 0	$ (51)
Held to maturity securities, fair value	$ 94,139	$ 100,041

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
INTEREST INCOME:
Interest and fees on loans	$ 444,137	$ 424,941	$ 424,615
Interest on securities:
Taxable	125,010	98,263	73,147
Nontaxable	19,268	12,484	9,868
Interest on federal funds sold	1	0	4
Interest on interest bearing deposits in other financial institutions	344	924	6,695
TOTAL INTEREST INCOME	588,760	536,612	514,329
INTEREST EXPENSE:
Interest on deposits	14,797	30,287	63,734
Interest on short-term borrowings	471	610	1,748
Interest on other borrowings (includes $1,601, $(1,820), and $170 of interest expense (benefit) related to derivatives reclassified from accumulated other comprehensive income (loss) for the years ended December 31, 2021, 2020, and 2019, respectively)	12,932	13,986	15,118
TOTAL INTEREST EXPENSE	28,200	44,883	80,600
NET INTEREST INCOME	560,560	491,729	433,729
Provision (benefit) for credit losses	(17,575)	67,066	16,657
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	578,135	424,663	417,072
NONINTEREST INCOME:
Revenue from contract with customers	87,666	71,085	75,342
Loan servicing income	3,276	2,977	4,843
Securities gains, net (includes $5,910, $7,592, and $7,659 of net security gains reclassified from accumulated other comprehensive income (loss) for the years ended December 31, 2021, 2020, and 2019, respectively)	5,910	7,793	7,659
Unrealized gain on equity securities, net	58	640	525
Net gains on sale of loans held for sale	20,605	28,515	15,555
Valuation adjustment on servicing rights	1,088	(1,778)	(911)
Income on bank owned life insurance	3,762	3,554	3,785
Other noninterest income	6,570	7,505	9,410
TOTAL NONINTEREST INCOME	128,935	120,291	116,208
NONINTEREST EXPENSES:
Salaries and employee benefits	240,114	202,668	200,341
Occupancy	29,965	26,554	25,429
Furniture and equipment	13,323	12,514	12,013
Professional fees	64,600	54,068	47,697
Advertising	7,257	5,235	9,825
Core deposit intangibles and customer relationship intangibles amortization	9,395	10,670	11,972
Other real estate and loan collection expenses	990	1,340	1,035
(Gain) loss on sales/valuations of assets, net	588	5,101	(19,422)
Acquisition, integration and restructuring costs	5,331	5,381	6,580
Partnership investment in tax credit projects	6,303	3,801	8,030
Other noninterest expenses	53,946	43,631	45,661
TOTAL NONINTEREST EXPENSES	431,812	370,963	349,161
INCOME BEFORE INCOME TAXES	275,258	173,991	184,119
Income taxes (includes $1,896, $2,376, and $1,890 of income tax expense reclassified from accumulated other comprehensive income (loss) for the years ended December 31, 2021, 2020, and 2019, respectively)	55,335	36,053	34,990
NET INCOME	219,923	137,938	149,129
Preferred dividends	(8,050)	(4,451)	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 211,873	$ 133,487	$ 149,129
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 5.01	$ 3.58	$ 4.14
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	5.00	3.57	4.14
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.96	$ 0.80	$ 0.68
Service charges and fees
NONINTEREST INCOME:
Revenue from contract with customers	$ 59,703	$ 47,467	$ 52,157
Trust fees
NONINTEREST INCOME:
Revenue from contract with customers	24,417	20,862	19,399
Brokerage and insurance commissions
NONINTEREST INCOME:
Revenue from contract with customers	$ 3,546	$ 2,756	$ 3,786

CONSOLIDATED STATEMENTS OF INCOME (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest on other borrowings	$ 12,932	$ 13,986	$ 15,118
Securities gains, net	5,910	7,793	7,659
Income taxes	55,335	36,053	34,990
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Net Gain (Loss) from Derivatives
Interest on other borrowings	1,601	(1,820)	170
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Net Unrealized Investment Gain (Loss)
Securities gains, net	5,910	7,592	7,659
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Other Comprehensive Income (Loss)
Income taxes	$ 1,896	$ 2,376	$ 1,890

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 219,923	$ 137,938	$ 149,129
Securities:
Net change in unrealized gain (loss) on securities	(103,807)	109,972	52,557
Reclassification adjustment for net gains realized in net income	(5,910)	(7,592)	(7,659)
Income taxes	28,573	(26,578)	(11,429)
Other comprehensive income (loss) on securities	(81,144)	75,802	33,469
Derivatives used in cash flow hedging relationships:
Net change in unrealized gain (loss) on derivatives	5,037	(904)	(3,639)
Gain (loss) reclassified from accumulated other comprehensive income into income (expense) on interest rate swaps	(1,601)	(1,820)	170
Income taxes	(763)	567	723
Other comprehensive income (loss) on cash flow hedges	2,673	(2,157)	(2,746)
Other comprehensive income (loss)	(78,471)	73,645	30,723
TOTAL COMPREHENSIVE INCOME	$ 141,452	$ 211,583	$ 179,852

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Impact of ASU 2016-13 adoption	Adjusted balance	Series E preferred stock	Preferred Stock	Preferred Stock Adjusted balance	Preferred Stock Series E preferred stock	Common Stock	Common Stock Adjusted balance	Capital Surplus	Capital Surplus Adjusted balance	Retained Earnings	Retained Earnings Impact of ASU 2016-13 adoption	Retained Earnings Adjusted balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Adjusted balance
Balance at beginning of period at Dec. 31, 2018	$ 1,325,175	$ (1,272)			$ 0			$ 34,477		$ 743,095		$ 579,252	$ (1,272)		$ (31,649)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	179,852											149,129			30,723
Cash dividends declared:
Common	(24,607)											(24,607)
Issuance of shares of common stock	92,919							2,227		90,692
Stock based compensation	6,070									6,070
Balance at end of period at Dec. 31, 2019	1,578,137	$ (14,891)	$ 1,563,246		0	$ 0		36,704	$ 36,704	839,857	$ 839,857	702,502	$ (14,891)	$ 687,611	(926)	$ (926)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	211,583											137,938			73,645
Cash dividends declared:
Preferred stock	(4,451)											(4,451)
Common	(29,468)											(29,468)
Issuance of 11,500 shares of Series E preferred stock				$ 110,705			$ 110,705
Issuance of shares of common stock	220,206							5,390		214,816
Stock based compensation	7,410									7,410
Balance at end of period at Dec. 31, 2020	2,079,231				110,705			42,094		1,062,083		791,630			72,719
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income (loss)	141,452											219,923			(78,471)
Cash dividends declared:
Preferred stock	(8,050)											(8,050)
Common	(40,509)											(40,509)
Issuance of shares of common stock	1,311							181		1,130
Stock based compensation	8,743									8,743
Balance at end of period at Dec. 31, 2021	$ 2,182,178				$ 110,705			$ 42,275		$ 1,071,956		$ 962,994			$ (5,752)

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 4.E)
-URI http://asc.fasb.org/extlink&oid=122038336&loc=d3e74512-122707

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends per share preferred stock (in dollars per share)	$ 700.00	$ 386.94
Cash dividends per share common stock (in dollars per share)	$ 0.96	$ 0.80	$ 0.68
Issuance of shares of Series E preferred stock (in shares)		11,500
Issuance of common stock (in shares)	181,402	5,389,584	2,226,779

CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 219,923	$ 137,938	$ 149,129
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,894	27,289	30,797
Provision (benefit) for credit losses	(17,575)	67,066	16,657
Net amortization of premium on securities	52,145	16,042	20,326
Provision for deferred taxes	11,543	(10,910)	(414)
Securities gains, net	(5,910)	(7,793)	(7,659)
Unrealized gain on equity securities, net	(58)	(640)	(525)
Stock based compensation	8,743	7,410	6,070
(Gain) loss on sales/valuations of assets, net	2,222	5,101	(8,394)
Loans originated for sale	(466,071)	(621,507)	(384,603)
Proceeds on sales of loans held for sale	521,463	615,439	396,290
Net gains on sales of loans held for sale	(19,083)	(25,133)	(14,661)
(Increase) decrease in accrued interest receivable	(1,590)	(9,971)	1,301
Increase in prepaid expenses	(1,102)	(3,504)	(8,566)
Increase (decrease) in accrued interest payable	(497)	(2,915)	421
Gain on extinguishment of debt	0	0	(375)
Capitalization of servicing rights	(1,522)	(3,484)	(1,011)
Valuation adjustment on servicing rights	(1,088)	1,778	911
Excess tax (expense) benefit from stock based compensation	312	(93)	266
Other, net	(2,712)	(1,745)	(34,786)
NET CASH PROVIDED BY OPERATING ACTIVITIES	326,037	190,368	161,174
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of time deposits in other financial institutions	(10)	0	(258)
Proceeds from the sale of securities available for sale	1,475,598	1,097,378	1,628,467
Proceeds from the sale of securities held to maturity	0	1,056	0
Proceeds from the sale, maturity of and principal paydowns on other investments	4,858	8,506	10,325
Proceeds from the maturity of and principal paydowns on securities available for sale	1,059,292	567,884	402,946
Proceeds from the maturity of and principal paydowns on securities held to maturity	5,659	3,458	3,158
Proceeds from the maturity of time deposits in other financial institutions	245	585	1,216
Purchase of securities available for sale	(4,094,661)	(4,119,814)	(2,577,106)
Purchase of other investments	(12,172)	(49,228)	(6,446)
Net (increase) decrease in loans	50,437	(444,146)	(90,749)
Purchase of bank owned life insurance policies	(288)	(292)	(28)
Proceeds from bank owned life insurance policies	0	606	1,402
Proceeds from sale of mortgage servicing rights	0	0	35,017
Capital expenditures and investments	(17,203)	(18,542)	(17,928)
Net cash and cash equivalents received in acquisitions	0	641,315	76,071
Net cash expended in divestitures	(15,682)	0	(49,264)
Proceeds from sale of equipment	10,489	5,895	903
Proceeds on sale of OREO and other repossessed assets	8,338	3,913	8,304
NET CASH USED BY INVESTING ACTIVITIES	(1,525,100)	(2,301,426)	(573,970)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand deposits	813,600	1,367,903	51,178
Net increase in savings accounts	893,569	735,968	680,641
Net decrease in time deposit accounts	(242,321)	(254,540)	(81,251)
Net increase (decrease) in short-term borrowings		40,137
Net increase (decrease) in short-term borrowings	(36,275)		(51,314)
Proceeds from short term FHLB advances	141,700	516,545	512,085
Repayments of short term FHLB advances	(141,700)	(597,742)	(546,725)
Proceeds from other borrowings	147,614	314,397	50
Repayments of other borrowings	(233,794)	(134,244)	(20,693)
Proceeds from issuance of preferred stock	0	110,705	0
Payment for the redemption of debt	0	0	(2,125)
Proceeds from issuance of common stock	2,925	3,004	661
Dividends paid	(48,559)	(31,906)	(24,607)
NET CASH PROVIDED BY FINANCING ACTIVITIES	1,296,759	2,070,227	517,900
Net increase (decrease) in cash and cash equivalents	97,696	(40,831)	105,104
Cash and cash equivalents at beginning of year	337,903	378,734	273,630
CASH AND CASH EQUIVALENTS AT END OF PERIOD	435,599	337,903	378,734
Supplemental disclosures:
Cash paid for income/franchise taxes	49,914	33,402	37,609
Cash paid for interest	28,703	47,798	80,238
Loans transferred to OREO	2,807	3,511	8,066
Transfer of premises from premises, furniture and equipment held for sale to premises, furniture and equipment, net	396	855	4,306
Purchases of securities available for sale, accrued, not paid	0	0	11,106
Transfer of premises from premises, furniture and equipment, net to premises, furniture and equipment held for sale	12,662	8,134	4,655
Securities transferred from held to maturity to available for sale	0	0	148,030
Securities transferred from available for sale to held to maturity	0	462	0
Loans transferred to held for sale	0	0	32,111
Deposits transferred to held for sale	0	0	76,968
Dividends declared, not paid	2,013	2,013	0
Stock consideration granted for acquisitions	$ 0	$ 217,202	$ 92,258

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations - Heartland Financial USA, Inc. ("HTLF") is a multi-bank holding company with locations in Iowa, Illinois, Wisconsin, New Mexico, Arizona, Colorado, Montana, Minnesota, Kansas, Missouri, Texas and California. The principal services of HTLF, which are provided through its subsidiaries, are FDIC-insured deposit accounts and related services, and loans to businesses and consumers. The loans consist primarily of commercial and industrial, owner-occupied commercial real estate, non-owner occupied commercial real estate, real estate construction, agricultural and agricultural real estate, residential real estate and consumer loans.

Principles of Presentation - The consolidated financial statements include the accounts of HTLF and its subsidiaries: Dubuque Bank and Trust Company; Illinois Bank & Trust; Wisconsin Bank & Trust; New Mexico Bank & Trust; Arizona Bank & Trust; Rocky Mountain Bank; Citywide Banks; Minnesota Bank & Trust; Bank of Blue Valley; Premier Valley Bank; First Bank & Trust; Citizens Finance Parent Co.; DB&T Insurance, Inc.; DB&T Community Development Corp.; Heartland Community Development, Inc.; Heartland Financial USA, Inc. Insurance Services; Citizens Finance Co.; Citizens Finance of Illinois Co.; Heartland Financial Statutory Trust IV; Heartland Financial Statutory Trust V; Heartland Financial Statutory Trust VI; Heartland Financial Statutory Trust VII; Morrill Statutory Trust I; Morrill Statutory Trust II; Sheboygan Statutory Trust I, CBNM Capital Trust I, Citywide Capital Trust III, Citywide Capital Trust IV, Citywide Capital Trust V, OCGI Statutory Trust III, OCGI Capital Trust IV, BVBC Capital Trust II, and BVBC Capital Trust III. All of HTLF’s subsidiaries are wholly-owned as of December 31, 2021.

The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") and prevailing practices within the banking industry. In preparing such financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the balance sheets and revenues and expenses for the years then ended. Actual results could differ significantly from those estimates. A material estimate that is particularly susceptible to significant change relates to the determination of the allowance for credit losses.

Business Combinations - HTLF applies the acquisition method of accounting in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 805, Business Combinations. Under the acquisition method, HTLF recognizes assets acquired, including identified intangible assets, and the liabilities assumed in acquisitions at fair value as of the acquisition date, with the acquisition-related transaction costs expensed in the period incurred. Determining the fair value of assets acquired and liabilities assumed often involves estimates based on third-party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques that may include estimates of attrition, inflation, asset growth rates, discount rates, multiples of earnings or other relevant factors. In addition, the determination of the useful lives over which an intangible asset will be amortized is subjective.

Cash and Cash Equivalents - For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks, interest bearing deposits held at the Federal Reserve Bank, federal funds sold to other banks and other short-term investments. Generally, federal funds are purchased and sold for one-day periods.

Trading Securities - Trading securities represent those securities HTLF intends to actively trade and are stated at fair value with changes in fair value reflected in noninterest income. HTLF had no trading securities at both December 31, 2021 and 2020.

Available for Sale ("AFS") Debt Securities and Equity Securities - Available for sale securities consist of those securities not classified as held to maturity or trading, which management intends to hold for indefinite periods of time or that may be sold in response to changes in interest rates, prepayments or other similar factors. Available for sale securities are stated at fair value with any unrealized gain or loss, net of applicable income tax, reported as a separate component of stockholders’ equity. Security premiums and discounts are amortized/accreted using the interest method over the period from the purchase date to the expected maturity or call date of the related security.

HTLF reviews the investment securities portfolio at the security level on a quarterly basis for potential credit losses, which takes into consideration numerous factors, and the relative significance of any single factor can vary by security. Some factors HTLF may consider include changes in security ratings, financial condition of the issuer, as well as security and industry specific economic conditions. In addition, with regard to debt securities, HTLF may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral. For certain

debt securities in unrealized loss positions, HTLF prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security.

Realized securities gains or losses on securities sales (using specific identification method) are included in securities gains, net in the consolidated statements of income.

Equity securities include Community Reinvestment Act mutual funds with readily determinable fair values and are carried at fair value. Certain equity securities do not have readily determinable fair values, such as Federal Reserve Bank stock and Federal Home Loan Bank stock, which are held for debt and regulatory purposes and are carried at cost minus impairment, if any, plus or minus changes resulting from observable price changes for the identical or similar investment of the same issuer. HTLF has not recorded any impairment or other adjustments to the carrying amount of these investments during the years ended December 31, 2021, and December 31, 2020.

Allowance for Credit Losses on AFS Debt Securities - HTLF reviews the investment securities portfolio at the security level on a quarterly basis for potential credit losses, which takes into consideration numerous factors, and the relative significance of any single factor can vary by security. Some factors HTLF may consider include changes in security ratings, financial condition of the issuer, as well as security and industry specific economic conditions. In addition, with regard to debt securities, HTLF may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral. For certain debt securities in unrealized loss positions, HTLF prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security.

The decline in fair value of an AFS debt security due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through an allowance for credit losses, such as declines due to changes in market interest rates, are recorded through other comprehensive income, net of applicable taxes. Although these evaluations involve significant judgment, an unrealized loss in the fair value of a debt security is generally considered to not be related to credit when the fair value of the security is below the carrying value primarily due to changes in risk-free interest rates, there has not been significant deterioration in the financial condition of the issuer, and HTLF does not intend to sell nor does it believe it will be required to sell the security before the recovery of its cost basis. HTLF had no allowance for credit losses on AFS debt securities recorded at December 31, 2021, and December 31, 2020.

Securities Held to Maturity - Securities which HTLF has the ability and positive intent to hold to maturity are classified as held to maturity. Such securities are stated at amortized cost, adjusted for premiums and discounts that are amortized/accreted using the interest method over the period from the purchase date to the expected maturity or call date of the related security.

Allowance for Credit Losses on Held to Maturity Debt Securities - HTLF measures expected credit losses on held to maturity debt securities on a collective basis based on security type. The estimate of expected credit losses considers historical credit information that is adjusted for current conditions and supportable forecasts. HTLF's held to maturity debt securities consist primarily of investment grade obligations of states and political subdivisions. The forecast and forecast period used in the calculation of the allowance for credit losses for loans is used in calculating the allowance for credit losses on held to maturity debt securities. HTLF had no allowance for credit losses on held to maturity debt securities recorded at December 31, 2021, compared to $51,000 at December 31, 2020.

Loans Held to Maturity - Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost, which is the principal amount outstanding, net of cumulative charge-offs, unamortized net deferred loan origination fees and costs and unamortized premiums or discounts on purchased loans. HTLF has a loan policy which establishes the credit risk appetite, lending standards and underwriting criteria designed so that HTLF may extend credit in a prudent and sound manner. The HTLF board of directors reviews and approves the loan policy on a regular basis. A reporting system supplements the review process by providing management and the board with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and nonperforming loans and potential problem loans.

HTLF originates commercial and industrial loans and owner occupied commercial real estate loans for a wide variety of business purposes, including lines of credit for capital and operating purposes and term loans for real estate and equipment purchases. Non-owner occupied commercial real estate loans provide financing for various non-owner occupied or income producing properties. Real estate construction loans are generally short-term or interim loans that provide financing for acquiring or developing commercial income properties, multi-family projects or single-family residential homes. Agricultural and agricultural real estate loans provide financing for capital improvements and farm operations, as well as livestock and machinery purchases. Residential real estate loans are originated for the purchase or refinancing of single family residential properties. Consumer loans include loans for motor vehicles, home improvement, home equity and personal lines of credit.

Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. HTLF’s policy is to discontinue the accrual of interest income on any loan when, in the opinion of management, there is a reasonable doubt as to the timely collection of the interest and principal, normally when a loan is 90 days past due. When interest accruals are deemed uncollectible, interest credited to income in the current year is reversed and interest accrued in prior years is charged to the allowance for credit losses. A loan can be restored to accrual status if the borrower has resumed paying the full amount of the scheduled contractual interest and principal payments on the loan, and (1) all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within a reasonable period of time, and (2) there is a sustained period of repayment performance (generally a minimum of six months) by the borrower in accordance with the scheduled contractual terms.

Acquired Loans - HTLF has acquired loans through acquisitions, some of which have experienced more than insignificant deterioration in credit quality since origination and are classified as PCD loans. HTLF considers the following criteria in determining PCD loans:

•watch, substandard and non-accrual loans;

•loans delinquent more than 30 days as of the acquisition date;

•loans that have experienced more than one 30-59 day delinquency;

•loans that have experienced any delinquency of more than 60 days;

•loan with a TDR status as of the acquisition date;

•loans with a Coronavirus Disease 2019 ("COVID-19") modification as of the acquisition date;

•loans in high-risk industries based on macroeconomic conditions and local market conditions of the acquired entity on acquisition date.

An allowance for credit losses on PCD loans is determined using the same allowance methodology as described below for loans held to maturity. The allowance for credit losses determined on a collective basis is allocated to individual loans. The sum of the PCD loan purchase price and allowance for credit loss becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Any subsequent changes to the credit quality of PCD loans are recognized in net income by adjusting the allowance for credit losses through provision expense.

At acquisition, for purchased loans not defined as PCD loans ("non-PCD"), the purpose of the loan (e.g., business, agricultural or personal), the type of borrower (e.g., business or individual) and the type of collateral for the loan (e.g., commercial real estate, residential real estate, general business assets or unsecured) of each loan are considered in order to assign purchased loans into one of the following eight loan pools: commercial and industrial, Paycheck Protection Program ("PPP"), owner occupied commercial real estate, non-owner occupied commercial real estate, real estate construction, agricultural and agricultural real estate, residential real estate and consumer.

For non-PCD loans, the premium or discount, if any, representing the excess of the amount of reasonably estimable and probable discounted future cash collections over the purchase price, is accreted into interest income using the interest method over the weighted average remaining contractual life of the loan pool. Because HTLF uses the pool method as described above, no adjustment is made to the discount of an individual loan on the specific date of a credit event with respect to such loan. Additionally, the premium or discount accretion is suspended on loans that subsequently become nonperforming.

An allowance for credit losses for non-PCD loans is established through recognition of provision expense in net income using the same methodology as other loans held to maturity.

Allowance for Credit Losses for Loans - The allowance for credit losses is a valuation account that is deducted from the loans held to maturity amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectibility of a loan balance is confirmed. Provisions for credit losses for loans and recoveries on loan previously charged-off by HTLF are added back to the allowance.

HTLF's allowance model is designed to consider the current contractual term of the loan, defined as starting as of the most recent renewal date and ending at maturity date.

Management's estimation of expected credit losses is based on relevant information about past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amounts, including expected defaults and prepayments. Historical loss experience is generally the starting point for estimating expected credit losses. Adjustments are

made to historical loss experience to reflect differences in asset-specific risk characteristics, such as underwriting standards, portfolio mix or asset terms and differences in economic conditions, both current conditions and reasonable and supportable forecasts. If HTLF is not able to make or obtain reasonable and supportable forecasts for the entire life of the financial asset, it is required to estimate expected credit losses for the remaining life using an approach that reverts to historical credit loss information. The components of the allowance for credit losses are described more specifically below.

Quantitative Factors

The quantitative component of the allowance for credit losses is measured using historical loss experience using a look back period, currently over the most recent 13 years, on a pool basis for loans with similar risk characteristics. HTLF utilizes third-party software to calculate the expected credit losses using two separate methodologies. For certain commercial and agricultural loans, the expected credit losses are calculated through a transition matrix model derived probability of default and loss given default methodology. The transition matrix model determines the life of loan probability of default using the historical transitions of loans between risk ratings and through default. The probability of default and loss given default methodology have been developed using HTLF’s historical loss experience over the look back period. For smaller commercial and agricultural loans, residential real estate loans and consumer loans, a lifetime average historical loss rate is established for each pool of loans based upon an average loss rate calculated using HTLF historical loss experience over the look back-period.

The risks in the commercial and industrial loan portfolio include the unpredictability of the cash flow of the borrowers and the variability in the value of the collateral securing the loans. Owner occupied commercial real estate loans are dependent upon the cash flow of the borrowers and the collateral value of the real estate. Non-owner occupied commercial real estate loans are typically dependent, in large part, on sufficient income from the properties securing the loans to cover the operating expenses and debt service. Real estate construction loans involve additional risks because funds are advanced based upon estimates of costs and the estimated value of the completed project. Additionally, real estate construction loans have a greater risk of default in a weaker economy because the source of repayment is reliant on the successful and timely sale of the project. Agricultural and agricultural real estate loans are dependent upon the profitable operation or management of the farm property securing the loan. Loans secured by farm equipment, livestock or crops may not provide an adequate source of repayment because of damage or depreciation. Residential real estate loans are dependent upon the borrower's ability to repay the loan and the underlying collateral value. Consumer loans are dependent upon the borrower's personal financial circumstances and continued financial stability.

If a loan no longer shares similar risk characteristics with other loans in the pool, it is evaluated on an individual basis and is not included in the collective evaluation. Lending relationships with $500,000 or more of total exposure and are on nonaccrual are individually assessed using a collateral dependency calculation. A loan is collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. The impairment will be recognized by creating a specific reserve against the loan with a corresponding charge to provision expense. In most cases, the specific reserve will be charged off in the same quarter as the loss is probable. In some cases, when HTLF believes certain loans do not share the same risk characteristics with other loans in the pool, the standard allows for these loans to be individually assessed. All individually assessed loan calculations are completed at least semi-annually.

Qualitative Factors

HTLF's allowance methodology also has a qualitative component, the purpose of which is to provide management with a means to take into consideration changes in current conditions that could potentially have an effect, up or down, on the level of recognized loan losses, that, for whatever reason, fail to show up in the quantitative analysis performed in determining its base loan loss rates.

HTLF utilizes the following qualitative factors, all of which are equally weighted:

•changes in lending policies and procedures

•changes in the nature of loans

•experience and ability of management

•changes in the credit quality of the loan portfolio

•risk in acquired portfolios

•concentrations of credit

•other external factors

The qualitative adjustments are based on the comparison of the current condition to the average condition over the look back period. The adjustment amount can be either positive or negative depending on whether or not the current condition is better or worse than the historical average. HTLF incorporates the adjustments for changes in current conditions using an overlay

approach. The adjustments are applied as a percentage adjustment in addition to the calculated historical loss rates of each pool. These adjustments reflect the extent to which HTLF expects current conditions to differ from the conditions that existed for the period over which historical information was evaluated. HTLF utilizes an anchoring approach to determine the minimum and maximum amount of qualitative allowance for credit losses, which is determined by comparing the highest and lowest historical rate to the current quantitative allowance rate to calculate the rate for the adjustment.

Economic Forecasting

The allowance for credit losses estimate incorporates a reasonable and supportable forecast of various macro-economic indices over the remaining life of HTLF’s assets. HTLF utilizes an overlay approach for its economic forecasting component, similar to the method utilized for the qualitative factors. The length of the reasonable and supportable forecast period is a judgmental determination based on the level to which the entity can support its forecast of economic conditions that drive its estimate of expected loss. HTLF compares forecasted macro-economic indices, such as unemployment and gross domestic product, to the economic conditions that existed over HTLF's look back period.

HTLF uses Moody's baseline economic forecast scenario, which is updated quarterly in HTLF's methodology. The economic forecast reverts to the historical mean immediately at the end of the reasonable and supportable forecast period. Because of the economic uncertainty associated with COVID-19, HTLF utilized a one-year reasonable and supportable forecast period for the calculation of the December 31, 2021, and December 31, 2020 allowance for credit losses.

It is expected that actual economic conditions will, in many circumstances, turn out differently than forecasted because the ultimate outcomes during the forecast period may be affected by events that were unforeseen, such as economic disruption and fiscal or monetary policy actions, which are exacerbated by longer forecasting periods. This uncertainty would be relevant to the entity’s confidence level as to the outcomes being forecasted. That is, an entity is likely less confident in the ultimate outcome of events that will occur at the end of the forecast period as compared to the beginning. As a result, actual future economic conditions may not be an effective indicator of the quality of management’s forecasting process, including the length of the forecast period.

Under the incurred credit losses methodology utilized in the prior periods, the allowance for loan losses was maintained at a level estimated by management to provide for known and inherent risks in the loan portfolio. The allowance for loan losses was based upon a continuing review of past loan loss experience, current economic conditions, volume growth, the underlying collateral value of the loans and other relevant factors. Loans which were deemed uncollectible were charged-off and deducted from the allowance for loan losses. Provisions for loan losses and recoveries on loans previously charged-off by Heartland were added to the allowance for loan losses.

The incurred credit losses methodology included the establishment of a dual risk rating system, which allowed for the utilization of a probability of default and loss given default for certain commercial and agricultural loans in the calculation of the allowance for loan losses. The probability of default and loss given default methodology was developed using Heartland’s default and loss experience over historical observation periods. Heartland's incurred credit losses methodology also utilized loss emergence periods, which represented the average amount of time from the point that a loss was incurred to the point at which the loss was confirmed. The loss rates used in the allowance calculation were periodically re-evaluated and adjusted to reflect changes in historical loss levels or other risks. In addition to past loss experience, management also utilized certain qualitative factors in our incurred credit losses methodology including the overall composition of the loan portfolio, general economic conditions, types of loans, loan collateral values, and trends in loan delinquencies and non-performing assets.

Troubled Debt Restructured Loans - Loans are considered troubled debt restructured loans ("TDR") if concessions have been granted to borrowers that are experiencing financial difficulty. The concessions granted generally involve the modification of terms of the loan, such as changes in payment schedule or interest rate, which generally would not otherwise be considered. TDRs can involve loans remaining on nonaccrual, moving to nonaccrual, or continuing on accrual status, depending on the individual facts and circumstances of the borrower. Nonaccrual TDRs are included and treated consistently with all other nonaccrual loans. Generally, TDRs remain on nonaccrual until the customer has attained a sustained period of repayment performance under the modified loan terms (generally a minimum of six months). However, performance prior to the restructuring, or significant events that coincide with the restructuring, are considered in assessing whether the borrower can meet the new terms and whether the loan should be returned to or maintained on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on nonaccrual status.

During 2020, TDR treatments were updated due to COVID-19 and the Coronavirus Aid, Relief and Economic Security Act (the "CARES Act") regulation. Under the CARES Act, banking institutions are not required to classify modifications as TDRs if the following three conditions are met: 1) the deferral was related to COVID-19, 2) executed on a loan that was not more than 30 days past due as of December 31, 2019, and 3) executed between March 1, 2020 and the later of December 31, 2020 or the last

day of the Declaration of National Emergency. HTLF has adopted the CARES Act rule for TDR classification and has enhanced its procedures for deferral monitoring. The National Emergency Declaration was in effect during 2021, and therefore, HTLF followed the CARES Act rule for TDR classification during the year ended December 31, 2021.

A loan that is a TDR that has an interest rate consistent with market rates at the time of restructuring and is in compliance with its modified terms in the calendar year after the year in which the restructuring took place is no longer considered a TDR. To be considered in compliance with its modified terms, a loan that is a TDR must be in accrual status and must be current or less than 30 days past due under the modified repayment terms. A loan that has been modified at a below market rate will remain classified as a TDR. If the borrower’s financial conditions improve to the extent that the borrower qualifies for a new loan with market terms, the new loan will not be considered a TDR if HTLF's credit analysis shows the borrower's ability to perform under scheduled terms.

Loans Held for Sale - Loans held for sale are stated at the lower of cost or fair value on an aggregate basis. Gains or losses on sales are recorded in noninterest income. Direct loan origination costs and fees are deferred at origination of the loan. These deferred costs and fees are recognized in noninterest income as part of the gain or loss on sales of loans upon sale of the loan.

At December 31, 2021 and 2020, loans held for sale primarily consisted of 1-4 family residential mortgages.

Allowance for Credit Losses on Unfunded Loan Commitments - HTLF estimates expected credit losses over the contractual term of the loan for the unfunded portion of the loan commitment that is not unconditionally cancellable by HTLF using the same collective allowance methodology for credit losses for loans described above. Management uses an estimated average utilization rate to determine the exposure at default. The allowance for unfunded commitments is recorded in the Accrued Expenses and Other Liabilities section of the consolidated balance sheets.

Mortgage Servicing and Transfers of Financial Assets - HTLF regularly sells residential mortgage loans to others, primarily government sponsored entities, on a non-recourse basis. Sold loans are not included in the accompanying consolidated balance sheets. HTLF generally retains the right to service the sold loans for a fee. HTLF's First Bank and Trust subsidiary serviced mortgage loans primarily for government sponsored entities with aggregate unpaid principal balance of $723.3 million and $743.3 million, at December 31, 2021 and 2020, respectively.

Premises, Furniture and Equipment, net - Premises, furniture and equipment are stated at cost less accumulated depreciation. The provision for depreciation of premises, furniture and equipment is determined by straight-line and accelerated methods over the estimated useful lives of 18 to 39 years for buildings, 15 years for land improvements and 3 to 7 years for furniture and equipment.

Premises, Furniture and Equipment Held for Sale - Premises, furniture and equipment are stated at the estimated fair value less disposal costs. Subsequent write-downs and gains or losses on the sales are recorded to loss on sales/valuation of assets, net.

Other Real Estate - Other real estate represents property acquired through foreclosures and settlements of loans. Property acquired is recorded at the estimated fair value of the property less disposal costs. The excess of carrying value over fair value less disposal costs is charged against the allowance for credit losses. Subsequent write downs estimated on the basis of later valuations and gains or losses on sales are charged to loss on sales/valuation of assets, net. Expenses incurred in maintaining such properties are charged to other real estate and loan collection expenses.

Goodwill - Goodwill represents the excess of the purchase price of acquired subsidiaries’ net assets over their fair value at the purchase date. HTLF assesses goodwill for impairment annually, and more frequently if events occur which may indicate possible impairment, and assesses goodwill at the reporting unit level, also giving consideration to overall enterprise value as part of that assessment.

In evaluating goodwill for impairment, HTLF first assesses qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of a reporting unit is less than its carrying amount. If HTLF concludes that it is more likely than not that the fair value of a reporting unit is more than its carrying value, then no further testing of goodwill assigned to the reporting unit is required. However, if HTLF concludes that it is more likely than not that the fair value of a reporting unit is less than its carrying value, then HTLF performs a quantitative goodwill impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment to recognize, if any. In addition, the income tax effects of tax deductible goodwill on the carrying amount of the reporting unit should be considered when measuring the goodwill impairment loss, if applicable. A goodwill impairment charge is recognized for the amount by which

the carrying amount exceeds the reporting unit's fair value; however, the loss recognized cannot exceed the total amount of goodwill allocated to that reporting unit.

Core Deposit Intangibles and Customer Relationship Intangibles, Net - Core deposit intangibles are amortized over 8 to 18 years on an accelerated basis. Customer relationship intangibles are amortized over 22 years on an accelerated basis. Annually, HTLF reviews these intangible assets for events or circumstances that may indicate a change in the recoverability of the underlying basis.

Servicing Rights, Net - Mortgage and commercial servicing rights associated with loans originated and sold, where servicing is retained, are initially capitalized at fair value and recorded on the consolidated statements of income as a component of gains on sale of loans held for sale. The values of these capitalized servicing rights are amortized as an offset to the loan servicing income earned in relation to the servicing revenue expected to be earned.

The carrying values of these rights are reviewed quarterly for impairment based on the calculation of their fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including loan type and loan term. As of December 31, 2021, a valuation allowance of $327,000 was required on HTLF's mortgage servicing rights with an original term of 15 years, and a valuation allowance of $1.3 million was required on HTLF's mortgage servicing rights with an original term of 30 years. At December 31, 2020, a valuation allowance of $422,000 was required on HTLF's mortgage servicing rights with an original term of 15 years, and a valuation allowance of $1.4 million was required on HTLF's mortgage servicing rights with an original term of 30 years.

Cash Surrender Value on Life Insurance - HTLF and its subsidiaries have purchased life insurance policies on the lives of certain officers. The one-time premiums paid for the policies, which coincide with the initial cash surrender value, are recorded as an asset. Increases or decreases in the cash surrender value, other than proceeds from death benefits, are recorded as noninterest income in income on bank owned life insurance. Proceeds from death benefits first reduce the cash surrender value attributable to the individual policy and then any additional proceeds are recorded in other noninterest income.

Income Taxes - HTLF and its subsidiaries file a consolidated federal income tax return and separate or combined income or franchise tax returns as required by the various states. HTLF recognizes certain income and expenses in different time periods for financial reporting and income tax purposes. The provision for deferred income taxes is based on an asset and liability approach and represents the change in deferred income tax accounts during the year, including the effect of enacted tax rate changes. A valuation allowance is provided to reduce deferred tax assets if their expected realization is deemed not to be more likely than not.

A tax position is recognized as a benefit only if it is "more likely than not" that the tax position would be sustained in a tax examination. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. HTLF recognizes interest and penalties related to income tax matters in income tax expense.

Derivative Financial Instruments - HTLF uses derivative financial instruments as part of its interest rate risk management, which includes interest rate swaps, certain interest rate lock commitments and forward sales of securities related to mortgage banking activities. FASB ASC Topic 815 establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts, and for hedging activities. As required by ASC 815, HTLF records all derivatives on the consolidated balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the resulting designation. Derivatives used to hedge the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. To qualify for hedge accounting, HTLF must comply with the detailed rules and documentation requirements at the inception of the hedge, and hedge effectiveness is assessed at inception and periodically throughout the life of each hedging relationship. Hedge ineffectiveness, if any, is measured periodically throughout the life of the hedging relationship.

For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of the derivative is initially reported in other comprehensive income (loss) and subsequently reclassified to interest income or expense when the hedged transaction affects earnings, while the ineffective portion of changes in the fair value of the derivative, if any, is recognized immediately in other noninterest income. HTLF assesses the effectiveness of each hedging relationship by comparing the cumulative changes in cash flows of the derivative hedging instrument with the cumulative changes in cash flows of the designated hedged item or transaction. No component of the change in the fair value of the hedging instrument is excluded from the assessment of hedge effectiveness.

HTLF has fair value hedging relationships at December 31, 2021. HTLF uses hedge accounting in accordance with ASC 815, with the unrealized gains and losses, representing the change in fair value of the derivative and the change in fair value of the risk being hedged on the related loan, being recorded in the consolidated statements of income. The ineffective portions of the unrealized gains or losses, if any, are recorded in interest income and interest expense in the consolidated statements of income. HTLF uses statistical regression to assess hedge effectiveness, both at the inception of the hedge as well as on a continual basis. The regression analysis involves regressing the periodic change in fair value of the hedging instrument against the periodic changes in the fair value of the asset being hedged due to changes in the hedge risk.

HTLF does not use derivatives for trading or speculative purposes. Derivatives not designated as hedges are not speculative and are used to manage HTLF’s exposure to interest rate movements and other identified risks, but do not meet the strict hedge accounting requirements of ASC 815.

Mortgage Derivatives - HTLF uses interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans and mortgage backed securities. These commitments are considered derivative instruments. The fair value of these commitments is recorded on the consolidated balance sheets with the changes in fair value recorded in the consolidated statements of income as a component of gains on sale of loans held for sale. These derivative contracts are designated as free standing derivative contracts and are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and therefore do not qualify for hedge accounting treatment.

Fair Value Measurements - Fair value represents the estimated price at which an orderly transaction to sell an asset or transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept). Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using discounted cash flow or other valuation techniques. Inputs into the valuation methods are subjective in nature, involve uncertainties, and require significant judgment and therefore cannot be determined with precision. Accordingly, the derived fair value estimates presented herein are not necessarily indicative of the amounts HTLF could realize in a current market exchange. Assets and liabilities are categorized into three levels based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine the fair value. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy in which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. HTLF's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Below is a brief description of each fair value level:

Level 1 — Valuation is based upon quoted prices for identical instruments in active markets.

Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

Treasury Stock - Treasury stock is accounted for by the cost method, whereby shares of common stock reacquired are recorded at their purchase price. When treasury stock is reissued, any difference between the sales proceeds, or fair value when issued for business combinations, and the cost is recognized as a charge or credit to capital surplus. HTLF had no treasury stock at December 31, 2021 and December 31, 2020.

Trust Department Assets - Property held for customers in fiduciary or agency capacities is not included in the accompanying consolidated balance sheets because such items are not assets of the HTLF banks.

Earnings Per Share - Basic earnings per share is determined using net income available to common stockholders and weighted average common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average common shares and assumed incremental common shares issued. Amounts used in the determination of basic and diluted earnings per share for the years ended December 31, 2021, 2020 and 2019, are shown in the table below, dollars and number of shares in thousands, except per share data:


	2021		2020		2019
Net income attributable to HTLF	$	219,923	$	137,938	$	149,129
Preferred dividends	(8,050)		(4,451)		—

Net income available to common stockholders	$	211,873	$	133,487	$	149,129
Weighted average common shares outstanding for basic earnings per share	42,260		37,269		35,991
Assumed incremental common shares issued upon vesting of restricted stock units	151		88		71
Weighted average common shares for diluted earnings per share	42,411		37,357		36,062
Earnings per common share — basic	$	5.01	$	3.58	$	4.14
Earnings per common share — diluted	$	5.00	$	3.57	$	4.14
Number of antidilutive stock units excluded from diluted earnings per share computation	1		—		—

Subsequent Events - HTLF has evaluated subsequent events that may require recognition or disclosure through the filing date of this Annual Report on Form 10-K with the SEC.

Effect of New Financial Accounting Standards

ASU 2018-16

In October 2018, the FASB issued ASU 2018-16, "Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting." In the United States, eligible benchmark interest rates under Topic 815 are interest rates on direct Treasury obligations of the U.S. government, the London Interbank Offered Rate ("LIBOR") swap rate, and the Overnight Index Swap ("OIS") Rate based on the Fed Funds Effective Rate. When the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, in August 2017, it introduced the Securities Industry and Financial Markets Association ("SIFMA") Municipal Swap Rate as the fourth permissible U.S. benchmark rate. ASU 2018-16 adds the OIS rate based on the Secured Overnight Financing Rate ("SOFR") as a U.S. benchmark interest rate to facilitate the LIBOR to SOFR transition and provide sufficient lead time for entities to prepare for changes to interest rate risk hedging strategies for both risk management and hedge accounting purposes. ASU 2018-16 became effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years and the financial statement impact immediately upon adoption was immaterial. The future financial statement impact will depend on any new contracts entered into using new benchmark rates, as well as any existing contracts that are migrated from LIBOR to new benchmark interest rates. HTLF has a formal working group that is responsible for the planning, assessment and execution of the transition from LIBOR as an interest rate benchmark to term SOFR. Currently, HTLF has adjustable rate loans, several debt obligations and derivative instruments in place that reference LIBOR-based rates. HTLF's transition plan provided for the cessation in new contracts of the use of LIBOR as a reference rate by December 31, 2021.

ASU 2019-12

In December 2019, the FASB issued ASU 2019-12, "Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes." ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition for deferred tax liabilities for outside basis differences. ASU 2019-12 also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. HTLF adopted this ASU on January 1, 2021, as required, and the adoption did not have a material impact on its results of operations, financial position and liquidity.

ASU 2020-04

In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform," which provides optional expedients and exceptions for applying GAAP to loan and lease agreements, derivative contracts, and other transactions affected by the anticipated transition away from LIBOR toward new interest rate benchmarks. For loan and lease agreements that are modified because of reference rate reform and that meet certain scope guidance (i) modifications of loan agreements should be accounted for by prospectively adjusting the effective interest rate, and the modifications would be considered "minor" with the result that any existing unamortized origination fees/costs would carry forward and continue to be amortized and (ii) modifications of lease

agreements should be accounted for as a continuation of the existing agreement, with no reassessments of the lease classification and the discount rate or remeasurements of lease payments that otherwise would be required for modifications not accounted for as separate contracts. ASU 2020-04 also provides numerous optional expedients for derivative accounting. ASU 2020-04 is effective March 12, 2020 through December 31, 2022. An entity may elect to apply ASU 2020-04 for contract modifications as of January 1, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected for a Topic or an Industry Subtopic within the ASC, ASU 2020-04 must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. HTLF anticipates that ASU 2020-04 will simplify any modifications executed between the selected start date and December 31, 2022 that are directly related to LIBOR transition by allowing prospective recognition of the continuation of the contract, rather than extinguishment of the old contract that would result in writing off unamortized fees/costs. Management will continue to actively assess the impacts of ASU 2020-04 and the related opportunities and risks involved in the LIBOR transition.

ACQUISITIONS

12 Months Ended

Dec. 31, 2021

Business Combination and Asset Acquisition [Abstract]

ACQUISITIONS

Johnson Bank branches

On December 4, 2020, Arizona Bank & Trust ("AB&T"), a wholly-owned subsidiary of HTLF headquartered in Phoenix, Arizona, completed its acquisition of certain assets and assumed substantially all of the deposits and certain other liabilities of Johnson Bank’s Arizona operations, which includes four branches. Johnson Bank is a wholly-owned subsidiary of Johnson Financial Group, Inc. headquartered in Racine, Wisconsin. As of the closing date, AB&T acquired, at fair value, total assets of $419.7 million, which included gross loans of $150.7 million, and deposits of $415.5 million.

AIM Bancshares, Inc.

On October 19, 2020, HTLF entered into an Amended and Restated Agreement and Plan of Merger (the "agreement") with First Bank & Trust ("FBT"), HTLF's Texas wholly-owned subsidiary, AIM Bancshares, Inc. ("AIM"), AimBank, a Texas stated chartered bank and wholly-owned subsidiary of AIM, and the shareholder representative of AIM providing for HTLF to acquire AIM and AimBank in a two-step transaction. The transaction closed on December 4, 2020.

Pursuant the agreement, each share of AimBank common stock was converted into the right to receive 207 shares of HTLF common stock and $1,887.16 of cash, subject to certain hold-back provisions of the agreement. Based on the closing price of $41.89 per share of HTLF common stock on December 4, 2020, the aggregate merger consideration received by AimBank stockholders was valued at approximately $264.5 million, which was paid by delivery of HTLF common stock valued at $217.2 million and cash of $47.3 million, subject to certain hold-back provisions of the merger agreement relating to the cash consideration. In addition, holders of in-the-money options to acquire shares of AimBank common stock received aggregate consideration of approximately $4.9 million in exchange for the cancellation of such stock options.

The transaction included, at fair value, total assets of $1.97 billion, including $1.09 billion of gross loans held to maturity, and deposits of $1.67 billion. The transaction was considered a tax-free reorganization with respect to the stock consideration received by the shareholders of AimBank.

The assets and liabilities of AimBank were recorded on the consolidated balance sheet at the estimated fair value on the acquisition date. Loans classified as non-PCD were recorded on acquisition date at fair value based on a discounted cash flow valuation methodology that considers, among other things, projected default rates, loss given defaults and recovery rates.

The following table represents, in thousands, the amounts recorded on the consolidated balance sheet as of December 4, 2020:


	As of December 4, 2020
Fair value of consideration paid:
Common stock (5,185,045 shares)	$	217,202
Cash	47,275
Total consideration paid	264,477
Fair value of assets acquired
Cash and cash equivalents	470,085



Securities:
Carried at fair value	267,936

Other securities	3,210
Loans held to maturity	1,087,041
Allowance for credit losses for loans	(12,055)
Net loans held to maturity	1,074,986
Premises, furniture and equipment, net	27,867
Other real estate, net	1,119

Core deposit intangibles and customer relationships, net	3,102
Cash surrender value on life insurance	13,418
Other assets	20,159
Total assets	1,881,882
Fair value of liabilities assumed
Deposits	1,670,715
Short term borrowings	26,306

Other liabilities	11,807
Total liabilities assumed	1,708,828
Fair value of net assets acquired	173,054
Goodwill resulting from acquisition	$	91,423

HTLF recognized $91.4 million of goodwill in conjunction with the acquisition of AimBank which is calculated as the excess of both the consideration exchanged and the liabilities assumed as compared to the fair value of identifiable assets acquired. Goodwill resulted from the expected operational synergies, enhanced market area, cross-selling opportunities and expanded business lines. See Note 8 for further information on goodwill.

HTLF incurred $2.5 million of pre-tax merger related expenses in the year ended December 31, 2020, associated with the AimBank acquisition. The merger expenses are reflected on the consolidated statements of income for the applicable period and are reported primarily in the category of acquisition, integration and restructuring costs.

CASH AND DUE FROM BANKS	12 Months Ended
CASH AND DUE FROM BANKS	Dec. 31, 2021
Cash and Cash Equivalents [Abstract]
CASH AND DUE FROM BANKS	CASH AND DUE FROM BANKSThe HTLF banks are required to maintain certain average cash reserve balances as a non-member bank of the Federal Reserve System. On March 15, 2020, the Federal Reserve temporarily suspended the reserve requirement due to the COVID-19 pandemic, and as a result, there was no reserve requirement at both December 31, 2021, and December 31, 2020.

SECURITIES

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

SECURITIES

The amortized cost, gross unrealized gains and losses and estimated fair values of debt securities available for sale and equity securities with a readily determinable fair value as of December 31, 2021, and December 31, 2020, are summarized in the table below, in thousands:


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
December 31, 2021
U.S. treasuries	$	997	$	11	$	—	$	1,008
U.S. agencies	193,932		264		(812)		193,384
Obligations of states and political subdivisions	2,045,386		56,263		(16,616)		2,085,033
Mortgage-backed securities - agency	2,388,601		11,870		(51,182)		2,349,289
Mortgage-backed securities - non-agency	1,749,838		4,570		(11,029)		1,743,379
Commercial mortgage-backed securities - agency	125,397		1,429		(2,914)		123,912
Commercial mortgage-backed securities - non-agency	600,253		998		(363)		600,888
Asset-backed securities	408,167		2,803		(1,317)		409,653
Corporate bonds	2,979		61		—		3,040
Total debt securities	7,515,550		78,269		(84,233)		7,509,586
Equity securities with a readily determinable fair value	20,788		—		—		20,788
Total	$	7,536,338	$	78,269	$	(84,233)	$	7,530,374
December 31, 2020
U.S. treasuries	$	1,995	$	31	$	—	$	2,026
U.S. agencies	167,048		657		(926)		166,779
Obligations of states and political subdivisions	1,562,631		75,555		(2,959)		1,635,227
Mortgage-backed securities - agency	1,351,964		16,029		(12,723)		1,355,270
Mortgage-backed securities - non-agency	1,428,068		22,688		(1,640)		1,449,116
Commercial mortgage-backed securities - agency	171,451		3,440		(738)		174,153
Commercial mortgage-backed securities - non-agency	253,421		37		(691)		252,767
Asset-backed securities	1,064,255		9,421		(4,410)		1,069,266
Corporate bonds	3,763		8		(29)		3,742
Total debt securities	6,004,596		127,866		(24,116)		6,108,346
Equity securities	19,629		—		—		19,629
Total	$	6,024,225	$	127,866	$	(24,116)	$	6,127,975

The amortized cost, gross unrealized gains and losses and estimated fair values of held to maturity securities as of December 31, 2021, and December 31, 2020, are summarized in the table below, in thousands:


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Allowance for Credit Losses
December 31, 2021

Obligations of states and political subdivisions	$	84,709	$	9,430	$	—	$	94,139	$	—
Total	$	84,709	$	9,430	$	—	$	94,139	$	—
December 31, 2020

Obligations of states and political subdivisions	$	88,890	$	11,151	$	—	$	100,041	$	(51)
Total	$	88,890	$	11,151	$	—	$	100,041	$	(51)

As of December 31, 2021, HTLF had $29.4 million compared to $20.8 million at December 31, 2020, of accrued interest receivable, which is included in other assets on the consolidated balance sheets. HTLF does not consider accrued interest receivable in the carrying amount of financial assets held at amortized cost basis or in the allowance for credit losses calculation.

The amortized cost and estimated fair value of investment securities carried at fair value at December 31, 2021, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.


	December 31, 2021
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	2,455	$	2,481
Due in 1 to 5 years	19,058		19,897
Due in 5 to 10 years	173,467		175,188
Due after 10 years	2,048,314		2,084,899
Total debt securities	2,243,294		2,282,465
Mortgage and asset-backed securities	5,272,256		5,227,121
Equity securities with a readily determinable fair value	20,788		20,788
Total investment securities	$	7,536,338	$	7,530,374

The amortized cost and estimated fair value of debt securities held to maturity at December 31, 2021, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.


	December 31, 2021
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	5,096	$	5,112
Due in 1 to 5 years	38,787		40,561
Due in 5 to 10 years	34,824		39,871
Due after 10 years	6,002		8,595


Total investment securities	$	84,709	$	94,139

As of December 31, 2021, securities with a carrying value of $1.66 billion compared to $2.12 billion at December 31, 2020, were pledged to secure public and trust deposits, short-term borrowings and for other purposes as required and permitted by law.

Gross gains and losses realized related to sales of securities carried at fair value for the years ended December 31, 2021, 2020 and 2019 are summarized as follows, in thousands:


	2021		2020		2019
Available for Sale Securities sold:
Proceeds from sales	$	1,475,598	$	1,097,378	$	1,628,467
Gross security gains	11,892		13,208		11,774
Gross security losses	5,982		5,616		4,115

The following tables summarize, in thousands, the amount of unrealized losses, defined as the amount by which cost or amortized cost exceeds fair value, and the related fair value of investments with unrealized losses in HTLF's securities portfolio as of December 31, 2021, and December 31, 2020. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months. The reference point for determining how long an investment was in an unrealized loss position was December 31, 2021, and December 31, 2020, respectively.


Debt securities available for sale	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count
December 31, 2021

U.S. agencies	$	100,839	$	(812)	2	$	—	$	—	—	$	100,839	$	(812)	2
Obligations of states and political subdivisions	596,866		(10,115)		113	236,329		(6,501)		49	833,195		(16,616)		162
Mortgage-backed securities - agency	1,383,808		(33,291)		83	474,724		(17,891)		19	1,858,532		(51,182)		102
Mortgage-backed securities - non-agency	929,515		(10,870)		27	23,821		(159)		5	953,336		(11,029)		32
Commercial mortgage-backed securities - agency	26,999		(689)		8	53,025		(2,225)		5	80,024		(2,914)		13
Commercial mortgage-backed securities - non-agency	74,450		(145)		3	14,124		(218)		2	88,574		(363)		5
Asset-backed securities	113,945		(1,201)		6	13,799		(116)		6	127,744		(1,317)		12



Total temporarily impaired securities	$	3,226,422	$	(57,123)	242	$	815,822	$	(27,110)	86	$	4,042,244	$	(84,233)	328
December 31, 2020

U.S. agencies	$	2,981	$	(8)	5	$	99,922	$	(918)	72	$	102,903	$	(926)	77
Obligations of states and political subdivisions	346,598		(2,959)		49	—		—		—	346,598		(2,959)		49
Mortgage-backed securities - agency	653,793		(12,342)		35	31,012		(381)		3	684,805		(12,723)		38
Mortgage-backed securities - non-agency	378,843		(1,639)		17	1,622		(1)		1	380,465		(1,640)		18
Commercial mortgage-backed securities - agency	46,541		(738)		6	—		—		—	46,541		(738)		6
Commercial mortgage-backed securities - non-agency	100,042		(15)		2	35,428		(676)		3	135,470		(691)		5
Asset-backed securities	141,824		(643)		9	340,452		(3,767)		24	482,276		(4,410)		33
Corporate bonds	1,908		(29)		4	—		—		—	1,908		(29)		4


Total temporarily impaired securities	$	1,672,530	$	(18,373)	127	$	508,436	$	(5,743)	103	$	2,180,966	$	(24,116)	230

HTLF had no securities held to maturity with unrealized losses at December 31, 2021, or December 31, 2020.

The unrealized losses on HTLF's mortgage and asset-backed securities are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities. The losses are not related to concerns regarding the underlying credit of the issuers or the underlying collateral. It is expected that the securities will not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates or widening market spreads and not credit quality, and because HTLF has the intent and ability to hold these investments until a market price recovery or to maturity and does not believe it will be required to sell the securities before maturity, no credit losses were recognized on these securities during the years ended December 31, 2021 and December 31, 2020.

The unrealized losses on HTLF's obligations of states and political subdivisions are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities. Management monitors the published credit ratings of these securities and the stability of the underlying municipalities. Because the decline in fair value is attributable to changes in interest rates or widening market spreads due to insurance company downgrades and not underlying credit quality, and because HTLF has the intent and ability to hold these investments until a market price recovery or to maturity and does not

believe it will be required to sell the securities before maturity, no credit losses were recognized on these securities during the years ended December 31, 2021 and December 31, 2020.

The credit loss model applicable to held to maturity debt securities requires the recognition of lifetime expected credit losses through an allowance account at the time when the security is purchased. The following table presents, in thousands, the activity in the allowance for credit losses for securities held to maturity by obligations of states and political subdivisions for the years ended December 31, 2021 and December 31, 2020:


	Year Ended December 31,
	2021		2020
Beginning balance	$	51	$	—
Impact of ASU 2016-13 adoption	—		158
Adjusted balance	51		158
Provision (benefit) for credit losses	(51)		(107)
Ending balance	$	—	$	51

The following table summarizes, in thousands, the carrying amount of HTLF's held to maturity debt securities by investment rating as of December 31, 2021 and December 31, 2020, which are updated quarterly and used to monitor the credit quality of the securities:


	December 31, 2021		December 31, 2020
Rating
AAA	$	3,265	$	—
AA, AA+, AA-	61,471		64,385
A+, A, A-	15,034		18,353
BBB	4,939		4,208
Not Rated	—		1,944
Total	$	84,709	$	88,890

Included in other securities were shares of stock in each Federal Home Loan Bank (the "FHLB") of Des Moines, Chicago, Dallas, San Francisco and Topeka at an amortized cost of $22.6 million at December 31, 2021 and $19.5 million at December 31, 2020.

The HTLF banks are required to maintain FHLB stock as members of the various FHLBs as required by these institutions. These equity securities are "restricted" in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other marketable equity securities and their fair value approximates amortized cost. HTLF considers its FHLB stock as a long-term investment that provides access to competitive products and liquidity. HTLF evaluates impairment in these investments based on the ultimate recoverability of the par value and at December 31, 2021, did not consider the investments to be other than temporarily impaired.

LOANS

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

LOANS

Loans as of December 31, 2021, and December 31, 2020, were as follows, in thousands:


	December 31, 2021		December 31, 2020
Loans receivable held to maturity:
Commercial and industrial	$	2,645,085	$	2,534,799
Paycheck Protection Program ("PPP")	199,883		957,785
Owner occupied commercial real estate	2,240,334		1,776,406
Non-owner occupied commercial real estate	2,010,591		1,921,481
Real estate construction	856,119		863,220
Agricultural and agricultural real estate	753,753		714,526
Residential real estate	829,283		840,442
Consumer	419,524		414,392


Total loans receivable held to maturity	9,954,572		10,023,051






Allowance for credit losses	(110,088)		(131,606)
Loans receivable, net	$	9,844,484	$	9,891,445

As of December 31, 2021, HTLF had $35.3 million compared to $42.4 million as of December 31, 2020, of accrued interest receivable, which is included in other assets on the consolidated balance sheets. HTLF does not consider accrued interest receivable in the allowance for credit losses calculation.

The following table shows the balance in the allowance for credit losses at December 31, 2021, and December 31, 2020, and the related loan balances, disaggregated on the basis of measurement methodology, in thousands. If a loan no longer shares similar risk characteristics with other loans in the pool, it is evaluated on an individual basis and is not included in the collective evaluation. Lending relationships with $500,000 or more of total exposure and are on nonaccrual are individually assessed using a collateral dependency calculation. All other loans are collectively evaluated for losses.


	Allowance For Credit Losses						Gross Loans Receivable Held to Maturity
	Individually Evaluated for Credit Losses		Collectively Evaluated for Credit Losses		Total		Loans Individually Evaluated for Credit Losses		Loans Collectively Evaluated for Credit Losses		Total
December 31, 2021
Commercial and industrial	$	4,562	$	23,176	$	27,738	$	13,551	$	2,631,534	$	2,645,085
PPP	—		—		—		—		199,883		199,883
Owner occupied commercial real estate	105		19,109		19,214		8,552		2,231,782		2,240,334
Non-owner occupied commercial real estate	610		17,298		17,908		12,557		1,998,034		2,010,591
Real estate construction	—		22,538		22,538		—		856,119		856,119
Agricultural and agricultural real estate	2,369		2,844		5,213		13,773		739,980		753,753
Residential real estate	—		8,427		8,427		855		828,428		829,283
Consumer	—		9,050		9,050		—		419,524		419,524

Total	$	7,646	$	102,442	$	110,088	$	49,288	$	9,905,284	$	9,954,572


	Allowance For Credit Losses						Gross Loans Receivable Held to Maturity
	Individually Evaluated for Credit Losses		Collectively Evaluated for Credit Losses		Total		Loans Individually Evaluated for Credit Losses		Loans Collectively Evaluated for Credit Losses		Total

December 31, 2020
Commercial and industrial	$	4,077	$	34,741	$	38,818	$	16,578	$	2,518,221	$	2,534,799
PPP	—		—		—		—		957,785		957,785
Owner occupied commercial real estate	111		19,890		20,001		11,174		1,765,232		1,776,406
Non-owner occupied commercial real estate	3,250		17,623		20,873		13,490		1,907,991		1,921,481
Real estate construction	—		20,080		20,080		—		863,220		863,220
Agricultural and agricultural real estate	1,988		5,141		7,129		15,453		699,073		714,526
Residential real estate	—		11,935		11,935		535		839,907		840,442
Consumer	—		12,770		12,770		—		414,392		414,392

Total	$	9,426	$	122,180	$	131,606	$	57,230	$	9,965,821	$	10,023,051

HTLF had $10.4 million of troubled debt restructured loans at December 31, 2021, of which $9.5 million were classified as nonaccrual and $817,000 were accruing according to the restructured terms. HTLF had $6.2 million of troubled debt restructured loans at December 31, 2020, of which $3.8 million were classified as nonaccrual and $2.4 million were accruing according to the restructured terms.

The following table provides information on troubled debt restructured loans that were modified during the years ended December 31, 2021, and December 31, 2020, in thousands:


	For the Years Ended
	December 31, 2021					December 31, 2020
	Number of Loans	Pre-Modification Recorded Investment		Post-Modification Recorded Investment		Number of Loans	Pre-Modification Recorded Investment		Post-Modification Recorded Investment
Commercial and industrial	—	$	—	$	—	1	$	20	$	20
PPP	—	—		—		—	—		—
Owner occupied commercial real estate	—	—		—		—	—		—
Non-owner occupied commercial real estate	2	7,850		7,850		—	—		—
Real estate construction	—	—		—		—	—		—
Agricultural and agricultural real estate	—	—		—		—	—		—
Residential real estate	—	—		—		2	92		98
Consumer	—	—		—		—	—		—
Total	2	$	7,850	$	7,850	3	$	112	$	118

The pre-modification and post-modification recorded investment represents amounts as of the date of loan modification. The difference between the pre-modification investment and post-modification investment amounts on HTLF’s residential real estate troubled debt restructured loans is due to principal deferment collected from government guarantees and capitalized interest and escrow. At December 31, 2021, there were no commitments to extend credit to any of the borrowers with an existing TDR. The tables above do not include any loan modifications made under COVID-19 modification programs.

The following table provides information on troubled debt restructured loans for which there was a payment default during the years ended December 31, 2021, and December 31, 2020, in thousands, that had been modified during the 12-month period prior to the default:


	With Payment Defaults During the Following Periods
	For the Years Ended
	December 31, 2021			December 31, 2020
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial and industrial	—	$	—	—	$	—
PPP	—	—		—	—
Owner occupied commercial real estate	—	—		—	—
Non-owner occupied commercial real estate	—	—		—	—
Real estate construction	—	—		—	—
Agricultural and agricultural real estate	—	—		—	—
Residential real estate	—	—		1	232
Consumer	—	—		—	—
Total	—	$	—	1	$	232

HTLF's internal rating system is a series of grades reflecting management's risk assessment, based on its analysis of the borrower's financial condition. The "pass" category consists of all loans that are not in the "nonpass" category and categorized into a range of loan grades that reflect increasing, though still acceptable, risk. Movement of risk through the various grade levels in the pass category is monitored for early identification of credit deterioration.

The "nonpass" category consists of watch, substandard, doubtful and loss loans. The "watch" rating is attached to loans where the borrower exhibits negative trends in financial circumstances due to borrower specific or systemic conditions that, if left uncorrected, threaten the borrower's capacity to meet its debt obligations. The borrower is believed to have sufficient financial flexibility to react to and resolve its negative financial situation. These credits are closely monitored for improvement or deterioration.

The "substandard" rating is assigned to loans that are inadequately protected by the current net worth and repaying capacity of the borrower and that may be further at risk due to deterioration in the value of collateral pledged. Well-defined weaknesses jeopardize liquidation of the debt. These loans are still considered collectible; however, a distinct possibility exists that HTLF will sustain some loss if deficiencies are not corrected. Substandard loans may exhibit some or all of the following weaknesses: deteriorating financial trends, lack of earnings, inadequate debt service capacity, excessive debt and/or lack of liquidity.

The "doubtful" rating is assigned to loans where identified weaknesses in the borrowers' ability to repay the loan make collection or liquidation in full, on the basis of existing facts, conditions and values, highly questionable and improbable. These borrowers are usually in default, lack liquidity and capital, as well as resources necessary to remain as an operating entity. Specific pending events, such as capital injections, liquidations or perfection of liens on additional collateral, may strengthen the credit, thus deferring the rating of the loan as "loss" until the exact status of the loan can be determined. The loss rating is assigned to loans considered uncollectible. As of December 31, 2021, and December 31, 2020, HTLF had no loans classified as doubtful and no loans classified as loss.

The following tables show the risk category of loans by loan category and year of origination as of December 31, 2021 and December 31, 2020, in thousands:


As of December 31, 2021	Amortized Cost Basis of Term Loans by Year of Origination
	2021		2020		2019		2018		2017		2016 and Prior		Revolving		Total
Commercial and industrial
Pass	$	604,659	$	359,533	$	203,960	$	89,694	$	171,709	$	330,094	$	708,525	$	2,468,174
Watch	10,633		12,790		12,550		8,210		3,611		14,976		24,626		87,396
Substandard	19,888		6,391		13,050		8,535		6,619		12,052		22,980		89,515
Commercial and industrial total	$	635,180	$	378,714	$	229,560	$	106,439	$	181,939	$	357,122	$	756,131	$	2,645,085
PPP
Pass	$	146,370	$	25,707	$	—	$	—	$	—	$	—	$	—	$	172,077
Watch	10,726		127		—		—		—		—		—		10,853
Substandard	16,932		21		—		—		—		—		—		16,953
PPP total	$	174,028	$	25,855	$	—	$	—	$	—	$	—	$	—	$	199,883
Owner occupied commercial real estate
Pass	$	940,043	$	328,052	$	315,497	$	180,936	$	115,142	$	189,647	$	34,233	$	2,103,550
Watch	4,676		13,956		7,759		10,501		15,032		6,830		35		58,789
Substandard	11,958		20,769		13,734		2,809		13,912		13,063		1,750		77,995
Owner occupied commercial real estate total	$	956,677	$	362,777	$	336,990	$	194,246	$	144,086	$	209,540	$	36,018	$	2,240,334
Non-owner occupied commercial real estate
Pass	$	609,968	$	263,093	$	315,815	$	236,823	$	152,059	$	166,792	$	28,728	$	1,773,278
Watch	4,754		9,109		35,496		29,227		4,865		35,901		—		119,352
Substandard	15,722		10,612		21,798		3,599		14,023		51,766		441		117,961
Non-owner occupied commercial real estate total	$	630,444	$	282,814	$	373,109	$	269,649	$	170,947	$	254,459	$	29,169	$	2,010,591
Real estate construction
Pass	$	381,283	$	206,879	$	169,606	$	14,197	$	7,163	$	7,823	$	14,507	$	801,458
Watch	2,704		858		2,145		44,846		—		—		14		50,567
Substandard	—		50		46		3,944		—		54		—		4,094
Real estate construction total	$	383,987	$	207,787	$	171,797	$	62,987	$	7,163	$	7,877	$	14,521	$	856,119
Agricultural and agricultural real estate
Pass	$	217,179	$	102,030	$	47,927	$	32,913	$	22,029	$	35,548	$	220,065	$	677,691
Watch	4,018		10,390		4,688		2,270		33		2,038		2,948		26,385
Substandard	9,250		1,095		4,910		15,825		3,212		8,859		6,526		49,677
Agricultural and agricultural real estate total	$	230,447	$	113,515	$	57,525	$	51,008	$	25,274	$	46,445	$	229,539	$	753,753
Residential real estate
Pass	$	311,292	$	86,355	$	50,762	$	53,773	$	43,619	$	230,566	$	29,017	$	805,384
Watch	3,928		1,499		750		1,452		734		1,977		1,000		11,340
Substandard	2,528		444		410		2,317		1,139		5,721		—		12,559
Residential real estate total	$	317,748	$	88,298	$	51,922	$	57,542	$	45,492	$	238,264	$	30,017	$	829,283
Consumer
Pass	$	69,172	$	20,258	$	13,051	$	9,001	$	10,986	$	18,202	$	271,034	$	411,704
Watch	555		309		392		373		113		591		2,210		4,543
Substandard	267		204		218		236		363		1,611		378		3,277
Consumer total	$	69,994	$	20,771	$	13,661	$	9,610	$	11,462	$	20,404	$	273,622	$	419,524

Total pass	$	3,279,966	$	1,391,907	$	1,116,618	$	617,337	$	522,707	$	978,672	$	1,306,109	$	9,213,316
Total watch	41,994		49,038		63,780		96,879		24,388		62,313		30,833		369,225
Total substandard	76,545		39,586		54,166		37,265		39,268		93,126		32,075		372,031
Total loans	$	3,398,505	$	1,480,531	$	1,234,564	$	751,481	$	586,363	$	1,134,111	$	1,369,017	$	9,954,572


As of December 31, 2020	Amortized Cost Basis of Term Loans by Year of Origination
	2020		2019		2018		2017		2016		2015 and Prior		Revolving		Total
Commercial and industrial
Pass	$	557,853	$	340,809	$	168,873	$	215,696	$	101,010	$	337,834	$	541,627	$	2,263,702
Watch	41,574		24,676		19,672		14,262		8,072		2,474		49,432		160,162
Substandard	23,024		16,274		8,897		15,717		9,098		19,537		18,388		110,935
Commercial and industrial total	$	622,451	$	381,759	$	197,442	$	245,675	$	118,180	$	359,845	$	609,447	$	2,534,799
PPP
Pass	$	880,709	$	—	$	—	$	—	$	—	$	—	$	—	$	880,709
Watch	22,533		—		—		—		—		—		—		22,533
Substandard	54,543		—		—		—		—		—		—		54,543
PPP total	$	957,785	$	—	$	—	$	—	$	—	$	—	$	—	$	957,785
Owner occupied commercial real estate
Pass	$	400,662	$	369,401	$	300,242	$	167,470	$	107,234	$	213,780	$	33,759	$	1,592,548
Watch	15,345		13,764		22,488		20,811		8,717		15,282		4,311		100,718
Substandard	15,914		9,522		12,164		14,147		8,580		21,708		1,105		83,140
Owner occupied commercial real estate total	$	431,921	$	392,687	$	334,894	$	202,428	$	124,531	$	250,770	$	39,175	$	1,776,406
Non-owner occupied commercial real estate
Pass	$	334,722	$	411,301	$	305,456	$	194,101	$	108,070	$	233,153	$	24,466	$	1,611,269
Watch	22,826		55,225		24,718		18,724		20,954		45,672		5,114		193,233
Substandard	30,899		15,035		23,290		17,046		9,147		21,060		502		116,979
Non-owner occupied commercial real estate total	$	388,447	$	481,561	$	353,464	$	229,871	$	138,171	$	299,885	$	30,082	$	1,921,481
Real estate construction
Pass	$	311,625	$	309,678	$	157,171	$	12,625	$	6,954	$	5,110	$	21,431	$	824,594
Watch	2,105		26,659		2,403		332		55		388		1,295		33,237
Substandard	196		2,760		2,036		—		39		358		—		5,389
Real estate construction total	$	313,926	$	339,097	$	161,610	$	12,957	$	7,048	$	5,856	$	22,726	$	863,220
Agricultural and agricultural real estate
Pass	$	171,578	$	90,944	$	62,349	$	39,252	$	17,626	$	37,696	$	148,456	$	567,901
Watch	20,500		16,202		8,854		2,448		3,515		3,157		12,282		66,958
Substandard	17,403		7,044		23,519		6,758		3,917		9,952		11,074		79,667
Agricultural and agricultural real estate total	$	209,481	$	114,190	$	94,722	$	48,458	$	25,058	$	50,805	$	171,812	$	714,526
Residential real estate
Pass	$	153,017	$	99,440	$	118,854	$	83,534	$	63,477	$	244,852	$	33,467	$	796,641
Watch	3,986		4,507		2,188		1,896		3,117		8,525		—		24,219
Substandard	980		442		2,507		1,528		884		12,141		1,100		19,582
Residential real estate total	$	157,983	$	104,389	$	123,549	$	86,958	$	67,478	$	265,518	$	34,567	$	840,442
Consumer
Pass	$	37,037	$	27,646	$	18,811	$	15,034	$	4,009	$	19,483	$	280,996	$	403,016
Watch	168		352		647		340		82		646		1,622		3,857
Substandard	481		959		1,884		500		897		1,976		822		7,519
Consumer total	$	37,686	$	28,957	$	21,342	$	15,874	$	4,988	$	22,105	$	283,440	$	414,392

Total pass	$	2,847,203	$	1,649,219	$	1,131,756	$	727,712	$	408,380	$	1,091,908	$	1,084,202	$	8,940,380
Total watch	129,037		141,385		80,970		58,813		44,512		76,144		74,056		604,917
Total substandard	143,440		52,036		74,297		55,696		32,562		86,732		32,991		477,754
Total loans	$	3,119,680	$	1,842,640	$	1,287,023	$	842,221	$	485,454	$	1,254,784	$	1,191,249	$	10,023,051

Included in HTLF's nonpass loans at December 31, 2021 were $27.8 million compared to $77.1 million at December 31, 2020, of nonpass PPP loans as a result of risk ratings on non-PPP related credits. HTLF's risk rating methodology assigns a risk rating

to the whole lending relationship. HTLF has no allowance recorded related to the PPP loans because of the 100% SBA guarantee.

As of December 31, 2021, HTLF had $1.0 million of loans secured by residential real estate property that were in the process of foreclosure.

The following table sets forth information regarding HTLF's accruing and nonaccrual loans at December 31, 2021, and December 31, 2020, in thousands:


	Accruing Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Nonaccrual		Total Loans
December 31, 2021
Commercial and industrial	$	1,024	$	183	$	541	$	1,748	$	2,625,109	$	18,228	$	2,645,085
PPP	—		—		—		—		199,883		—		199,883
Owner occupied commercial real estate	130		—		—		130		2,229,054		11,150		2,240,334
Non-owner occupied commercial real estate	3,929		—		—		3,929		1,993,346		13,316		2,010,591
Real estate construction	238		50		—		288		855,463		368		856,119
Agricultural and agricultural real estate	687		—		—		687		737,380		15,686		753,753
Residential real estate	767		46		9		822		819,294		9,167		829,283
Consumer	251		57		—		308		417,762		1,454		419,524

Total loans receivable held to maturity	$	7,026	$	336	$	550	$	7,912	$	9,877,291	$	69,369	$	9,954,572


December 31, 2020
Commercial and industrial	$	5,825	$	2,322	$	720	$	8,867	$	2,504,170	$	21,762	$	2,534,799
PPP	1		—		—		1		957,784		—		957,785
Owner occupied commercial real estate	2,815		167		—		2,982		1,759,649		13,775		1,776,406
Non-owner occupied commercial real estate	2,143		2,674		—		4,817		1,902,003		14,661		1,921,481
Real estate construction	2,446		96		—		2,542		859,784		894		863,220
Agricultural and agricultural real estate	1,688		—		—		1,688		694,150		18,688		714,526
Residential real estate	1,675		83		—		1,758		825,047		13,637		840,442
Consumer	807		139		—		946		409,477		3,969		414,392

Total loans receivable held to maturity	$	17,400	$	5,481	$	720	$	23,601	$	9,912,064	$	87,386	$	10,023,051

Loans delinquent 30 to 89 days as a percent of total loans were 0.07% at December 31, 2021, compared to 0.23% at December 31, 2020. Changes in credit risk are monitored on a continuous basis and changes in risk ratings are made when identified. All individually assessed loans are reviewed at least semi-annually.

HTLF recognized $0 of interest income on nonaccrual loans during the years ended December 31, 2021 and December 31, 2020. As of December 31, 2021, HTLF had $25.5 million compared to $32.5 million at December 31, 2020, of nonaccrual loans with no related allowance.

The following table sets forth information regarding the PCD loans acquired during 2020 as of the date of acquisition, in thousands:


	Purchase Price		Allowance for Credit Losses		Premium/ (Discount)		Book Value
Commercial and industrial	$	81,917	$	(1,707)	$	170	$	80,380
PPP	—		—		—		—
Owner occupied commercial real estate	74,854		(1,205)		(56)		73,593
Non-owner occupied commercial real estate	134,135		(6,465)		(3,150)		124,520
Real estate construction	19,405		(603)		360		19,162
Agricultural and agricultural real estate	54,584		(1,848)		(413)		52,323
Residential real estate	25,556		(410)		94		25,240
Consumer	2,760		(75)		17		2,702
Total PCD loans	$	393,211	$	(12,313)	$	(2,978)	$	377,920

Loans are made in the normal course of business to directors, officers and principal holders of equity securities of HTLF. The terms of these loans, including interest rates and collateral, are similar to those prevailing for comparable transactions and do not involve more than a normal risk of collectability. Changes in such loans during the years ended December 31, 2021 and 2020, were as follows, in thousands:


	2021		2020
Balance at beginning of year	$	215,449	$	184,568
Advances	69,204		73,412
Repayments	(90,776)		(42,531)
Balance at end of year	$	193,877	$	215,449

ALLOWANCE FOR CREDIT LOSSES

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

ALLOWANCE FOR CREDIT LOSSES

Changes in the allowance for credit losses for loans for the years ended December 31, 2021, 2020 and 2019 were as follows, in thousands:


	2021		2020		2019
Balance at beginning of year	$	131,606	$	70,395	$	61,963
Impact of the adoption of ASU 2016-13 on January 1, 2020	—		12,071		—
Adjusted balance at January 1, 2020	131,606		82,466		61,963
Allowance for purchased credit deteriorated loans	—		12,313		—
Provision (benefit) for credit losses	(17,706)		65,745		16,657
Recoveries on loans previously charged-off	4,931		3,804		5,365
Charge-offs on loans	(8,743)		(32,722)		(13,590)
Balance at end of year	$	110,088	$	131,606	$	70,395

Changes in the allowance for credit losses for loans by loan category for the years ended December 31, 2021, and December 31, 2020, were as follows, in thousands:


	Balance at 12/31/2020		Charge-offs		Recoveries		Provision (Benefit)		Balance at 12/31/2021
Commercial and industrial	$	38,818	$	(2,150)	$	3,058	$	(11,988)	$	27,738

Owner occupied commercial real estate	20,001		(296)		152		(643)		19,214
Non-owner occupied commercial real estate	20,873		(1,637)		33		(1,361)		17,908
Real estate construction	20,080		(10)		10		2,458		22,538
Agricultural and agricultural real estate	7,129		(1,902)		531		(545)		5,213
Residential real estate	11,935		(181)		13		(3,340)		8,427
Consumer	12,770		(2,567)		1,134		(2,287)		9,050
Total	$	131,606	$	(8,743)	$	4,931	$	(17,706)	$	110,088


	Balance at 12/31/2019		Impact of ASU 2016-13 adoption on 1/1/2020		Adjusted balance at 1/1/2020		Purchased Credit Deteriorated Allowance		Charge-offs		Recoveries		Provision (Benefit)		Balance at 12/31/2020
Commercial and industrial	$	34,207	(272)		$	33,935	1,707		(14,974)		$	1,277	$	16,873	$	38,818

Owner occupied commercial real estate	7,921		(114)		7,807		1,205		(13,671)		205		24,455		20,001
Non-owner occupied commercial real estate	7,584		(2,617)		4,967		6,465		(45)		30		9,456		20,873
Real estate construction	8,677		6,335		15,012		603		(105)		220		4,350		20,080
Agricultural and agricultural real estate	5,680		(387)		5,293		1,848		(1,201)		971		218		7,129
Residential real estate	1,504		4,817		6,321		410		(515)		108		5,611		11,935
Consumer	4,822		4,309		9,131		75		(2,211)		993		4,782		12,770
Total	$	70,395	$	12,071	$	82,466	$	12,313	$	(32,722)	$	3,804	$	65,745	$	131,606

Changes in the allowance for credit losses on unfunded commitments for the years ended December 31, 2021 and December 31, 2020, were as follows:


	For the Years Ended December 31,
	2021		2020
Beginning balance	$	15,280	$	248
Impact of ASU 2016-13 adoption on January 1, 2020	—		13,604
Adjusted balance	15,280		13,852
Provision (benefit)	182		1,428
Ending balance	$	15,462	$	15,280

Management allocates the allowance for credit losses by pools of risk within each loan portfolio. The allocation of the allowance for credit losses by loan portfolio is made for analytical purposes and is not necessarily indicative of the trend of future loan losses in any particular category. The total allowance for credit losses is available to absorb losses from any segment of the loan portfolio.

PREMISES, FURNITURE AND EQUIPMENT

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

PREMISES, FURNITURE AND EQUIPMENT

Premises, furniture and equipment, excluding those held for sale, as of December 31, 2021, and December 31, 2020, were as follows, in thousands:


	2021		2020
Land and land improvements	$	59,195	$	61,930
Buildings and building improvements	177,296		192,702
Furniture and equipment	73,091		69,468
Total	309,582		324,100
Less accumulated depreciation	(104,583)		(104,505)
Premises, furniture and equipment, net	$	204,999	$	219,595

Depreciation expense on premises, furniture and equipment was $13.5 million, $11.8 million and $12.0 million for 2021, 2020 and 2019, respectively. Depreciation expense on buildings and building improvements of $6.9 million, $6.5 million and $6.2 million for the years ended December 31, 2021, 2020, and 2019, respectively, is recorded in occupancy expense on the consolidated statements of income. Depreciation expense on furniture and equipment of $6.6 million, $5.3 million and $5.8 million for the years ended December 31, 2021, 2020, and 2019, respectively, is recorded in furniture and equipment expense on the consolidated statements of income.

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS

HTLF had goodwill of $576.0 million at December 31, 2021, and $576.0 million at December 31, 2020. HTLF conducts its annual internal assessment of the goodwill both at the consolidated level and at its subsidiaries as of September 30. There was no goodwill impairment as of the most recent assessment.

HTLF recorded $91.4 million of goodwill and $3.1 million of core deposit intangibles in connection with the acquisition of AimBank, headquartered in Levelland, Texas on December 4, 2020.

HTLF recorded $38.4 million of goodwill and $1.3 million of core deposit intangibles in connection with the acquisition of certain assets and substantially all of the deposits and certain other liabilities of Johnson Bank's Arizona operations, headquartered in Racine, Wisconsin on December 4, 2020.

The core deposit intangibles recorded with the AimBank acquisition are not deductible for tax purposes and are expected to be amortized over a period of 10 years on an accelerated basis.

Goodwill related to the AimBank acquisition resulted from expected operational synergies, increased market presence, cross-selling opportunities, and expanded business lines and is not deductible for tax purposes.

The core deposit intangibles and goodwill recorded with Johnson Bank's Arizona operations are deductible for tax purposes, and the core deposit intangibles are expected to be amortized over a period of 10 years on an accelerated basis for book purposes.

Other intangible assets consist of core deposit intangibles, mortgage servicing rights, customer relationship intangible and commercial servicing rights. The gross carrying amount of other intangible assets and the associated accumulated amortization at December 31, 2021, and December 31, 2020, are presented in the table below, in thousands:


	December 31, 2021						December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	101,185	$	68,330	$	32,855	$	101,185	$	58,970	$	42,215
Customer relationship intangible	1,177		1,044		133		1,177		1,009		168
Mortgage servicing rights	12,790		6,378		6,412		11,268		6,079		5,189
Commercial servicing rights	7,054		6,576		478		7,054		6,191		863
Total	$	122,206	$	82,328	$	39,878	$	120,684	$	72,249	$	48,435

The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:


	Core Deposit Intangibles		Customer Relationship Intangible		Mortgage Servicing Rights		Commercial Servicing Rights		Total
Year ending December 31,
2022	$	7,702	$	34	$	1,603	$	171	$	9,510
2023	6,739		34		1,374		126		8,273
2024	5,591		33		1,145		86		6,855
2025	4,700		32		916		95		5,743
2026	8,123		—		687		—		8,810
Thereafter	—		—		687		—		687
Total	$	32,855	$	133	$	6,412	$	478	$	39,878

Projections of amortization expense for mortgage servicing rights are based on existing asset balances and the existing interest rate environment as of December 31, 2021. HTLF's actual experience may be significantly different depending upon changes in mortgage interest rates and market conditions. Mortgage loans serviced for others at First Bank & Trust were $723.3 million and $743.3 million as of December 31, 2021, and December 31, 2020, respectively. Custodial escrow balances maintained in connection with the mortgage loan servicing portfolio at First Bank & Trust were approximately $4.5 million and $5.7 million as of December 31, 2021, and December 31, 2020, respectively.

The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the twelve months ended December 31, 2021, and December 31, 2020:


	2021			2020
Balance at January 1,	$	5,189		$	5,621
Originations	1,522			3,383
Amortization	(1,387)			(2,037)


Valuation adjustment	1,088			(1,778)
Balance at December 31,	$	6,412		$	5,189
Fair value of mortgage servicing rights	$	6,412		$	5,189
Mortgage servicing rights, net to servicing portfolio	0.89		%	0.70		%

HTLF's commercial servicing portfolio is comprised of loans guaranteed by the Small Business Administration and United States Department of Agriculture that have been sold with servicing retained by HTLF, which totaled $45.4 million at December 31, 2021, and $66.2 million at December 31, 2020. The commercial servicing rights portfolio is separated into two tranches at the respective HTLF subsidiary, loans with a term of less than 20 years and loans with a term of more than 20 years. Fees collected for the servicing of commercial loans for others were $536,000 and $879,000 for the years ended December 31, 2021 and 2020, respectively.

The following table summarizes, in thousands, the changes in capitalized commercial servicing rights for the twelve months ended December 31, 2021, and December 31, 2020:


	2021			2020
Balance at January 1,	$	863		$	1,115
Originations	—			102
Amortization	(385)			(354)


Balance at December 31,	$	478		$	863
Fair value of commercial servicing rights	$	782		$	1,288
Commercial servicing rights, net to servicing portfolio	1.05		%	1.30		%

Mortgage and commercial servicing rights are initially recorded at fair value in net gains on sale of loans held for sale when they are acquired through loan sales. Fair value is based on market prices for comparable servicing contracts, when available, or based on a valuation model that calculates the present value of estimated future net servicing income.

Mortgage and commercial servicing rights are subsequently measured using the amortization method, which requires the asset to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing rights are evaluated for impairment at each HTLF subsidiary based upon the fair value of the assets as compared to the carrying amount. Impairment is recognized through a valuation allowance for specific tranches to the extent that fair value is less than carrying amount at each HTLF subsidiary.

The following table summarizes, in thousands, the book value, the fair value of each tranche of the mortgage servicing rights and any recorded valuation allowance at December 31, 2021, and December 31, 2020:


	Book Value 15-Year Tranche		Fair Value 15-Year Tranche		Valuation Allowance 15-Year Tranche		Book Value 30-Year Tranche		Fair Value 30-Year Tranche		Valuation Allowance 30-Year Tranche


December 31, 2021	$	1,607	$	1,280	$	327	$	6,463	$	5,132	$	1,331



December 31, 2020	$	1,522	$	1,100	$	422	$	5,445	$	4,089	$	1,356

The following table summarizes, in thousands, the book value, the fair value of each tranche of the commercial servicing rights at December 31, 2021, and December 31, 2020:


	Book Value- Less than 20 Years		Fair Value- Less than 20 Years		Book Value- More than 20 Years		Fair Value- More than 20 Years




December 31, 2021	$	45	$	98	$	433	$	684




December 31, 2020	$	87	$	203	$	776	$	1,085

The fair value of HTLF's mortgage servicing rights at First Bank & Trust was estimated at $6.4 million and $5.2 million at December 31, 2021, and December 31, 2020, respectively, and is comprised of loans serviced for the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC").

The fair value of mortgage servicing rights is calculated based upon a discounted cash flow analysis. Cash flow assumptions, including prepayment speeds, servicing costs and escrow earnings of First Bank & Trust's mortgage servicing rights are considered in the calculation. The weighted average constant prepayment rate was 13.40% as of December 31, 2021 compared to 16.20% for the December 31, 2020 valuation. The weighted average discount rate was 9.02% for both the December 31, 2021 and December 31, 2020 valuations. The average capitalization rate for 2021 ranged from 76 to 120 basis points compared to a range of 76 to 116 basis points for 2020. Fees collected for the servicing of mortgage loans for others were $1.8 million, $1.7 million and $4.9 million for the years ended December 31, 2021, 2020 and 2019, respectively.

The fair value of each commercial servicing rights portfolio is calculated based upon a discounted cash flow analysis. Cash flow assumptions, including prepayment speeds and servicing costs, are considered in the calculation. The range of average constant prepayment rates for the portfolio valuations was 12.52% and 16.88% as of December 31, 2021, compared to 14.95%

and 19.25% as of December 31, 2020. The discount rate range was 9.20% and 10.66% for the December 31, 2021 valuations compared to 7.70% and 12.88% for the December 31, 2020 valuations. There were no capitalizations during 2021 and the capitalization rate ranged from 310 to 445 basis points at December 31, 2020. The total fair value of HTLF's commercial servicing rights portfolios was estimated at $782,000 as of December 31, 2021, and $1.3 million as of December 31, 2020.

At December 31, 2021, a valuation allowance of $327,000 was required on the mortgage servicing rights 15-year tranche and a $1.3 million valuation allowance was required on the mortgage servicing rights 30-year tranche. At December 31, 2020, a $422,000 valuation allowance was required on the 15-year tranche and a $1.4 million valuation was required on the 30-year tranche for mortgage servicing rights. At both December 31, 2021 and December 31, 2020, no valuation allowance was required on commercial servicing rights with an original term of less than 20 years and no valuation allowance was required on commercial servicing rights with an original term of greater than 20 years.

DEPOSITS

12 Months Ended

Dec. 31, 2021

Deposits [Abstract]

DEPOSITS

At December 31, 2021, the scheduled maturities of time certificates of deposit were as follows, in thousands:


2022	$	795,813
2023	146,326
2024	39,435
2025	17,490
2026	15,458
Thereafter	9,498
Total	$	1,024,020

The aggregate amount of time certificates of deposit in denominations of $100,000 or more as of December 31, 2021, and December 31, 2020, were $605.2 million and $774.2 million, respectively. The aggregate amount of time certificates of deposit in denominations of $250,000 or more as of December 31, 2021, and December 31, 2020 were $333.7 million and $423.3 million, respectively.

Interest expense on deposits for the years ended December 31, 2021, 2020, and 2019, was as follows, in thousands:


	2021		2020		2019
Savings and money market accounts	$	9,063	$	16,560	$	47,069
Time certificates of deposit in denominations of $100,000 or more	3,463		8,244		9,344
Other time deposits	2,271		5,483		7,321
Interest expense on deposits	$	14,797	$	30,287	$	63,734

Total uninsured deposits were $8.21 billion as of December 31, 2021.

SHORT-TERM BORROWINGS

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

SHORT-TERM BORROWINGS

Short-term borrowings, which HTLF defines as borrowings with an original maturity of one year or less, as of December 31, 2021, and 2020, were as follows, in thousands:


	2021		2020
Retail repurchase agreements	$	122,996	$	118,293
Federal funds purchased	—		2,100

Advances from the federal discount window	—		35,000
Other short-term borrowings	8,601		12,479
Total	$	131,597	$	167,872

At December 31, 2021, HTLF had one non-revolving credit facility with an unaffiliated bank, which provided a borrowing capacity not to exceed $25.0 million when combined with the outstanding balance on the amortizing term loan discussed in Note 11, "Other Borrowings." The agreement with the unaffiliated bank for the credit facility contains specific financial covenants, all of which HTLF was in compliance with at December 31, 2021, and December 31, 2020. As of December 31,

2021, there was $3.5 million of borrowing capacity available, and there was no balance outstanding at both December 31, 2021, and December 31, 2020.

HTLF renewed its $75.0 million revolving credit line agreement with the same unaffiliated bank on June 14, 2021. This revolving credit line agreement is included in short-term borrowings, and the primary purpose of this credit line agreement is to provide liquidity to HTLF. HTLF had no advances on this line during 2021, and there was no outstanding balance at both December 31, 2021, and December 31, 2020.

The non-revolving credit facility and revolving credit line agreement mature on June 14, 2022, at which time any outstanding balance is due.

All retail repurchase agreements as of December 31, 2021, and 2020, were due within twelve months.

Average and maximum balances and rates on aggregate short-term borrowings outstanding during the years ended December 31, 2021, December 31, 2020 and December 31, 2019, were as follows, in thousands:


	2021			2020			2019
Maximum month-end balance	$	299,457		$	380,360		$	226,096
Average month-end balance	173,556			157,348			128,098
Weighted average interest rate for the year	0.26		%	0.39		%	1.38		%
Weighted average interest rate at year-end	0.19		%	0.18		%	1.21		%

All of HTLF's banks have availability to borrow short-term funds under the Discount Window Program based upon pledged securities with an outstanding balance of $1.66 billion and pledged commercial loans under the Borrower-In Custody of Collateral Program of $235.5 million, which provided total borrowing capacity of $895.6 million. There were no borrowings outstanding at December 31, 2021 compared to $35.0 million at December 31, 2020.

OTHER BORROWINGS

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

OTHER BORROWINGS

Other borrowings, which HTLF defines as borrowings with an original maturity date of more than one year, outstanding at December 31, 2021 and 2020, are shown in the table below, net of unamortized discount and issuance costs, in thousands:


	2021		2020
Advances from the FHLB; weighted average interest rates were 3.03% at both December 31, 2021 and 2020, respectively	$	898	$	1,018
Paycheck Protection Program Liquidity Fund	—		188,872
Trust preferred securities	147,316		146,323

Note payable to unaffiliated bank	—		44,417
Contracts payable for purchase of real estate and other assets	1,593		1,983
Subordinated notes	222,265		74,429

Total	$	372,072	$	457,042

Each of HTLF's subsidiary banks had been approved by their respective Federal Reserve Bank for the Paycheck Protection Program Liquidity Fund ("PPPLF"). The PPPLF program ended on July 31, 2021, and the balance at December 31, 2021, was $0. The balance outstanding at December 31, 2020 was $188.9 million.

The HTLF banks are members of the FHLB of Des Moines, Chicago, Dallas, San Francisco and Topeka. At December 31, 2021, none of HTLF's FHLB advances had call features. The advances from the FHLB are collateralized by a portion of the HTLF banks' investments in FHLB stock of $8.5 million and $13.6 million at December 31, 2021 and 2020, respectively. In addition, the FHLB advances are collateralized with pledges of one- to four-family residential mortgages, commercial and agricultural mortgages and securities totaling $4.43 billion at December 31, 2021, and $4.96 billion at December 31, 2020. At December 31, 2021, HTLF had $913.5 million of remaining FHLB borrowing capacity.

At December 31, 2021, HTLF had fifteen wholly-owned trust subsidiaries that were formed to issue trust preferred securities, which includes trust subsidiaries acquired in acquisitions since 2013. The proceeds from the offerings were used to purchase junior subordinated debentures from HTLF and were in turn used by HTLF for general corporate purposes. HTLF has the

option to shorten the maturity date to a date not earlier than the callable date. HTLF may not shorten the maturity date without prior approval of the Board of Governors of the Federal Reserve System, if required. Early redemption is permitted under certain circumstances, such as changes in tax or regulatory capital rules. In connection with these offerings of trust preferred securities, the balance of deferred issuance costs included in other borrowings was $44,000 and $74,000 as of December 31, 2021 and December 31, 2020, respectively. These deferred costs are amortized on a straight-line basis over the life of the debentures. The majority of the interest payments are due quarterly.

A schedule of HTLF’s trust preferred offerings outstanding, as of December 31, 2021, were as follows, in thousands:

Amount

Issued

Interest

Rate

Interest Rate as
of 12/31/21

Maturity

Date

Callable

Date

Heartland Financial Statutory Trust IV

$

10,310

2.75% over LIBOR

2.97%

03/17/2034

03/17/2022

Heartland Financial Statutory Trust V

20,619

1.33% over LIBOR

1.45%

04/07/2036

04/07/2022

Heartland Financial Statutory Trust VI

20,619

1.48% over LIBOR

1.68%

09/15/2037

03/15/2022

Heartland Financial Statutory Trust VII

18,042

1.48% over LIBOR

1.65%

09/01/2037

03/01/2022

Morrill Statutory Trust I

9,276

3.25% over LIBOR

3.47%

12/26/2032

03/26/2022

Morrill Statutory Trust II

8,976

2.85% over LIBOR

3.07%

12/17/2033

03/17/2022

Sheboygan Statutory Trust I

6,703

2.95% over LIBOR

3.17%

09/17/2033

03/17/2022

CBNM Capital Trust I

4,508

3.25% over LIBOR

3.45%

12/15/2034

03/15/2022

Citywide Capital Trust III

6,549

2.80% over LIBOR

2.93%

12/19/2033

04/23/2022

Citywide Capital Trust IV

4,411

2.20% over LIBOR

2.36%

09/30/2034

05/23/2022

Citywide Capital Trust V

12,198

1.54% over LIBOR

1.74%

07/25/2036

03/15/2022

OCGI Statutory Trust III

3,012

3.65% over LIBOR

3.89%

09/30/2032

03/30/2022

OCGI Capital Trust IV

5,455

2.50% over LIBOR

2.70%

12/15/2034

03/15/2022

BVBC Capital Trust II

7,278

3.25% over LIBOR

3.38%

04/24/2033

04/24/2022

BVBC Capital Trust III

9,404

1.60% over LIBOR

1.82%

09/30/2035

03/30/2022

Total trust preferred offerings

147,360

Less: deferred issuance costs

(44)

$

147,316

For regulatory purposes, $147.3 million of the trust preferred securities qualified as Tier 2 capital as of December 31, 2021 and $146.3 million of the trust preferred securities qualified as Tier 2 capital as of December 31, 2020.

In addition to the credit line described in Note 10, "Short-Term Borrowings," HTLF entered into a non-revolving credit facility with the same unaffiliated bank, which provided a borrowing capacity not to exceed $100.0 million when combined with the outstanding balance on its then existing amortizing term loan with the same unaffiliated bank. At December 31, 2021, a balance of $0 was outstanding on this term debt compared to $44.4 million at December 31, 2020. At December 31, 2021, $3.5 million was available on the non-revolving credit facility, of which no balance was outstanding.

On September 8, 2021, HTLF closed its public offering of $150.0 million aggregate principal amount of its 2.75% Fixed-to-Floating Rate Subordinated Notes due 2031 (the "2021 subordinated notes"). The notes were issued at par with an underwriting discount of $1.9 million. The 2021 subordinated notes were registered under HTLF’s effective shelf registration statement, and the net proceeds were used for general corporate purposes. The 2021 subordinated notes have a fixed interest rate of 2.75% until September 15, 2026, at which time the interest rate will be reset quarterly to a benchmark interest rate, which is expected to be three-month term Secure Overnight Financing Rate ("SOFR") plus a spread of 210 basis points. Interest is payable quarterly. The 2021 subordinated notes mature on September 15, 2031, and become redeemable at HTLF's option on September 15, 2026. In connection with the sale of the notes, the balance of deferred issuance costs included in other borrowings was $494,000 at December 31, 2021, These deferred costs are amortized on a straight-line basis over the life of the notes.

On December 17, 2014, HTLF issued $75.0 million of subordinated notes with a maturity date of December 30, 2024. The notes were issued at par with an underwriting discount of $1.1 million. The interest rate on the notes is fixed at 5.75% per annum, payable semi-annually. In connection with the sale of the notes, the balance of deferred issuance costs included in other borrowings was $114,000 at December 31, 2021, and $151,000 at December 31, 2020. These deferred costs are amortized on a straight-line basis over the life of the notes.

For regulatory purposes, $177.5 million of the total $222.3 million of subordinated notes qualified as Tier 2 capital as of December 31, 2021.

Future payments, net of unamortized discount and issuance costs, at December 31, 2021, for other borrowings at their maturity date follow in the table below, in thousands.


2022	$	2
2023	80
2024	74,572
2025	—
2026	—
Thereafter	297,418
Total	$	372,072

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1E
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

+ Details

DERIVATIVE FINANCIAL INSTRUMENTS

12 Months Ended

Dec. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

HTLF uses derivative financial instruments as part of its interest rate risk management strategy. As part of the strategy, HTLF considers the use of interest rate swaps, risk participation agreements, caps, floors and collars and certain interest rate lock commitments and forward sales of securities related to mortgage banking activities. HTLF's current strategy includes the use of interest rate swaps, interest rate lock commitments and forward sales of mortgage securities. In addition, HTLF is facilitating back-to-back loan swaps to assist customers in managing interest rate risk. HTLF's objectives are to add stability to its net interest margin and to manage its exposure to movement in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. HTLF is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. HTLF minimizes this risk by entering into derivative contracts with large, stable financial institutions. HTLF has not experienced any losses from nonperformance by these counterparties. HTLF monitors counterparty risk in accordance with the provisions of ASC 815.

In addition, interest rate-related derivative instruments generally contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. HTLF was required to pledge no cash as collateral at December 31, 2021, and $3.8 million of cash at December 31, 2020. No collateral was required to be pledged by HTLF's counterparties at both December 31, 2021 and December 31, 2020.

HTLF's derivative and hedging instruments are recorded at fair value on the consolidated balance sheets. See Note 20, "Fair Value," for additional fair value information and disclosures.

Cash Flow Hedges

HTLF has variable rate funding which creates exposure to variability in interest payments due to changes in interest rates. To manage the interest rate risk related to the variability of interest payments, HTLF has entered into various interest rate swap agreements. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are received or made on HTLF's variable-rate liabilities. For the twelve months ended December 31, 2021, the change in net unrealized losses on cash flow hedges reflects changes in the fair value of the swaps and reclassification from accumulated other comprehensive income to interest expense totaling $1.4 million.

HTLF entered into forward starting interest rate swap transactions to effectively convert Heartland Financial Statutory Trust VI

and VII, which total $40.0 million, from variable rate debt to fixed rate debt. For accounting purposes, these swap transactions are designated as a cash flow hedge of the changes in LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on $40.0 million of HTLF's subordinated debentures that reset quarterly on a specified reset date.

During the third quarter of 2021, the interest rate swap transactions associated with Heartland Financial Statutory VI and VII were terminated, and the debt was converted to variable rate subordinated debentures. In addition, HTLF had two swap transactions associated with an unaffiliated bank, one of which matured in the second quarter, and the other was terminated in the third quarter. The underlying debt with the unaffiliated bank was paid off in the third quarter of 2021. For the next twelve months, HTLF estimates that cash payments and reclassification from accumulated other comprehensive income to interest expense related to the terminated swaps will total $733,000.

At December 31, 2021, HTLF had no derivative instruments designated as cash flow hedges. The table below identifies the balance sheet category and fair values of HTLF's derivative instruments designated as cash flow hedges at December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category	Receive Rate		Weighted Average Pay Rate		Maturity













December 31, 2020
Interest rate swap	$	25,000	$	(127)	Other Liabilities	0.229	%	2.255	%	03/17/2021

Interest rate swap	21,667		(91)		Other Liabilities	2.649		3.674		05/10/2021
Interest rate swap	22,750		(2,220)		Other Liabilities	2.643		5.425		07/24/2028
Interest rate swap	20,000		(1,482)		Other Liabilities	0.217		2.390		06/15/2024
Interest rate swap	20,000		(1,385)		Other Liabilities	0.225		2.352		03/01/2024
Interest rate swap	6,000		(50)		Other Liabilities	0.217		1.866		06/15/2021
Interest rate swap	3,000		(25)		Other Liabilities	0.241		1.878		06/30/2021

The table below identifies the gains and losses recognized on HTLF's derivative instruments designated as cash flow hedges for the years ended December 31, 2021, and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Effective Portion
Gain (loss) recognized in other comprehensive income on interest rate swaps	$	5,380	$	(2,698)
Gain (loss) reclassified from accumulated other comprehensive income into income (expense) on interest rate swaps	1,403		1,794

Fair Value Hedges

HTLF uses interest rate swaps to convert certain long term fixed rate loans to floating rates to hedge interest rate risk exposure. HTLF uses hedge accounting in accordance with ASC 815, with the unrealized gains and losses, representing the change in fair value of the derivative and the change in fair value of the risk being hedged on the related loan, being recorded in the consolidated statements of income. The ineffective portions of the unrealized gains or losses, if any, are recorded in interest income and interest expense in the consolidated statements of income. HTLF uses statistical regression to assess hedge effectiveness, both at the inception of the hedge as well as on a continual basis. The regression analysis involves regressing the periodic change in the fair value of the hedging instrument against the periodic changes in the fair value of the asset being hedged due to changes in the hedge risk.

HTLF was required to pledge $3.8 million and $4.2 million of cash as collateral for these fair value hedges at December 31, 2021, and December 31, 2020, respectively.

The table below identifies the notional amount, fair value and balance sheet category of HTLF's fair value hedges at December 31, 2021, and December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category
December 31, 2021

Fair value hedges	$	16,755	$	(1,208)	Other liabilities
December 31, 2020

Fair value hedges	$	20,841	$	(2,480)	Other liabilities

The table below identifies the gains and losses recognized on HTLF's fair value hedges for the years ended December 31, 2021, and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Gain (loss) recognized in interest income on fair value hedges	$	1,272	$	(1,227)

Embedded Derivatives

HTLF has fixed rate loans with embedded derivatives. The loans contain terms that affect the cash flows or value of the loan similar to a derivative instrument, and therefore are considered to contain an embedded derivative. The embedded derivatives are bifurcated from the loans because the terms of the derivative instrument are not clearly and closely related to the loans. The embedded derivatives are recorded at fair value on the consolidated balance sheets as a part of other assets, and changes in the fair value are a component of noninterest income. The table below identifies the notional amount, fair value and balance sheet category of HTLF's embedded derivatives as of December 31, 2021, and December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category
December 31, 2021
Embedded derivatives	$	7,496	$	(317)	Other liabilities

December 31, 2020
Embedded derivatives	$	9,198	$	680	Other assets

The table below identifies the gains and losses recognized on HTLF's embedded derivatives for the years ended December 31, 2021 and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Gain (loss) recognized in other noninterest income on embedded derivatives	$	(997)	$	215

Back-to-Back Loan Swaps

HTLF has interest rate swap loan relationships with customers to meet their financing needs. Upon entering into these loan swaps, HTLF enters into offsetting positions with counterparties in order to minimize interest rate risk. These back-to-back loan swaps qualify as free standing financial derivatives with the fair values reported in other assets and other liabilities on the consolidated balance sheets. HTLF was required to post $24.1 million and $46.5 million as of December 31, 2021, and December 31, 2020, respectively, as collateral related to these back-to-back swaps. HTLF's counterparties were required to pledge $0 at both December 31, 2021 and December 31, 2020, related to these back-to-back swaps. Any gains and losses on these back-to-back swaps are recorded in noninterest income on the consolidated statements of income, and for the years ended December 31, 2021, and December 31, 2020, no gains or losses were recognized. The table below identifies the balance sheet category and fair values of HTLF's derivative instruments designated as loan swaps at December 31, 2021 and 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category	Weighted Average Receive Rate		Weighted Average Pay Rate
December 31, 2021
Customer interest rate swaps	$	463,069	$	23,574	Other Assets	4.44	%	2.35	%
Customer interest rate swaps	463,069		(23,574)		Other Liabilities	2.35	%	4.44	%
December 31, 2020
Customer interest rate swaps	$	440,719	$	43,422	Other Assets	4.46	%	2.46	%
Customer interest rate swaps	440,719		(43,422)		Other Liabilities	2.46	%	4.46	%

Other Free Standing Derivatives

HTLF has entered into interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans and mortgage backed securities that are considered derivative instruments. HTLF enters into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on the commitments to fund the loans as well as on residential mortgage loans available for sale. The fair value of these commitments is recorded on the consolidated balance sheets with the changes in fair value recorded in the consolidated statements of income as a component of gains on sale of loans held for sale. These derivative contracts are designated as free standing derivative contracts and are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and therefore do not qualify for hedge accounting treatment. HTLF was required to pledge $0 at both December 31, 2021, and December 31, 2020, as collateral for these forward commitments. HTLF's counterparties were required to pledge no cash as collateral at both December 31, 2021, and December 31, 2020, as collateral for these forward commitments.

HTLF acquired undesignated interest rate swaps in 2015. These swaps were entered into primarily for the benefit of customers seeking to manage their interest rate risk and are not designated against specific assets or liabilities on the consolidated balance sheet or forecasted transactions and therefore do not qualify for hedge accounting in accordance with ASC 815. These swaps are carried at fair value on the consolidated balance sheets as a component of other liabilities, with changes in the fair value recorded as a component of other noninterest income.

The table below identifies the balance sheet category and fair values of HTLF's other free standing derivative instruments not designated as hedging instruments at December 31, 2021, and December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category
December 31, 2021
Interest rate lock commitments (mortgage)	$	37,046	$	1,306	Other Assets

Forward commitments	19,000		32		Other Assets
Forward commitments	35,500		(95)		Other Liabilities
Undesignated interest rate swaps	7,496		317		Other Assets

December 31, 2020
Interest rate lock commitments (mortgage)	$	42,078	$	1,827	Other Assets
Forward commitments	—		—		Other Assets
Forward commitments	86,500		(697)		Other Liabilities

Undesignated interest rate swaps	9,198		(680)		Other Liabilities

HTLF recognizes gains and losses on other free standing derivatives in two separate income statement categories. Interest rate lock commitments and forward commitments are recognized in net gains on sale of loans held for sale and undesignated interest rate swaps are recognized in other noninterest income. The table below identifies the gains and losses recognized in income on HTLF's other free standing derivative instruments not designated as hedging instruments for the years ended December 31, 2021, and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Interest rate lock commitments (mortgage)	$	(2,345)	$	2,803
Forward commitments	32		(15)
Forward commitments	602		(585)
Undesignated interest rate swaps	997		(215)

INCOME TAXES

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

INCOME TAXES

The current income tax provision reflects the tax consequences of revenue and expenses currently taxable or deductible on various income tax returns for the year reported. The deferred income tax provision generally reflects the net change in deferred income tax assets and liabilities during the year, excluding any deferred income tax assets and liabilities of acquired businesses. The components of the provision for income taxes for the years ended December 31, 2021, 2020, and 2019 were as follows, in thousands:


	2021		2020		2019
Current:
Federal	$	32,440	$	34,513	$	24,106
State	11,352		12,450		11,298
Total current expense	$	43,792	$	46,963	$	35,404
Deferred:
Federal	$	8,938	$	(8,498)	$	760
State	2,605		(2,412)		(1,174)
Total deferred expense (benefit)	11,543		(10,910)		(414)
Total income tax expense	$	55,335	$	36,053	$	34,990

Temporary differences between the amounts reported in the financial statements and the tax basis of assets and liabilities result in deferred taxes. Deferred tax assets and liabilities at December 31, 2021 and 2020, were as follows, in thousands:


	2021		2020
Deferred tax assets:
Tax effect of net unrealized loss on securities carried at fair value reflected in stockholders’ equity	$	1,715	$	—
Tax effect of net unrealized loss on derivatives reflected in stockholders’ equity	367		1,130

Allowance for credit losses	28,149		33,393
Deferred compensation	11,299		9,623

Net operating loss carryforwards	18,874		17,585


Investments in partnerships	958		467

Deferred loan fees	1,691		5,006
Other	5,673		5,563
Total deferred tax assets	68,726		72,767
Valuation allowance for deferred tax assets	(15,120)		(12,828)
Total deferred tax assets after valuation allowance	$	53,606	$	59,939


Deferred tax liabilities:
Tax effect of net unrealized gain on securities carried at fair value reflected in stockholders’ equity	$	—	$	26,858

Securities	1,232		635
Premises, furniture and equipment	10,502		8,311


Purchase accounting	7,977		5,326
Prepaid expenses	2,078		2,675

Deferred loan costs	5,164		4,107
Other	2,250		3,905
Total deferred tax liabilities	29,203		51,817
Net deferred tax assets	$	24,403	$	8,122

As a result of acquisitions, HTLF had net operating loss carryforwards for federal income tax purposes of approximately $20.5 million at December 31, 2021, and $25.8 million at December 31, 2020. The associated deferred tax asset was $4.3 million at December 31, 2021, and $5.4 million at December 31, 2020. These net carryforwards expire during the period from December 31, 2026, through December 31, 2039, and are subject to an annual limitation of approximately $7.3 million. Net operating loss carryforwards for state income tax purposes were approximately $183.3 million at December 31, 2021, and $159.1 million at

December 31, 2020. The associated deferred tax asset, net of federal tax, was $14.3 million at December 31, 2021, and $11.8 million at December 31, 2020. These carryforwards have begun to expire and will continue to do so until December 31, 2039.

A valuation allowance against the deferred tax asset due to the uncertainty surrounding the utilization of these state net operating loss carryforwards was $13.2 million at December 31, 2021, and $10.5 million at December 31, 2020. During both 2021 and 2020, HTLF had book write-downs on investments that, for tax purposes, would generate capital losses upon disposal. Due to the uncertainty of HTLF's ability to utilize the potential capital losses, a valuation allowance for these potential losses totaled $1.9 million at December 31, 2021, and $2.3 million at December 31, 2020. HTLF released valuation allowances of $491,000 and $617,000 in 2021 and 2020, respectively, on deferred tax assets for capital losses it expects to realize on the disposal of partnership investments. HTLF generated capital gains from its strategic activities, which included various branch sales not conducted in the ordinary course of its business strategy. As a result of its net capital gains, HTLF was able to realize the benefit of its capital losses.

Realization of the deferred tax asset over time is dependent upon the existence of taxable income in carryback periods or the ability to generate sufficient taxable income in future periods. In determining that realization of the deferred tax asset was more likely than not, HTLF gave consideration to a number of factors, including its taxable income during carryback periods, its recent earnings history, its expectations for earnings in the future and, where applicable, the expiration dates associated with its tax carryforwards.

The actual income tax expense from continuing operations differs from the expected amounts for the years ended December 31, 2021, 2020, and 2019, (computed by applying the U.S. federal corporate tax rate of 21% for 2021, 2020, and 2019 income before income taxes) are as follows, in thousands:


	2021			2020			2019
Computed "expected" tax on net income	$	57,804		$	36,538		$	38,665
Increase (decrease) resulting from:
Nontaxable interest income	(5,504)			(4,011)			(3,281)
State income taxes, net of federal tax benefit	11,026			7,930			8,509

Tax credits	(7,613)			(4,521)			(6,860)
Valuation allowance	(440)			(374)			(1,648)
Excess tax expense/(benefit) on stock compensation	(270)			80			(229)

Other	332			411			(166)
Income taxes	$	55,335		$	36,053		$	34,990
Effective tax rates	20.1		%	20.7		%	19.0		%

HTLF's income taxes included solar energy tax credits totaling $6.1 million, $2.3 million, and $4.0 million during 2021, 2020 and 2019, respectively. Federal historic rehabilitation tax credits included in HTLF's income taxes totaled $720,000, $1.1 million, and $1.8 million in 2021, 2020, and 2019, respectively. Additionally, investments in certain low-income housing partnerships totaled $5.1 million at December 31, 2021, $5.6 million at December 31, 2020, and $6.1 million at December 31, 2019. These investments generated federal low-income housing tax credits of $538,000 during 2021, $780,000 at December 31, 2020 and $1.1 million at December 31, 2019 These investments are expected to generate federal low-income housing tax credits of approximately $538,000 for 2022 through 2023, $322,000 for 2024, $86,000 for 2025 and $34,000 for 2026. Additionally, HTLF had new markets tax credits of $300,000 in both 2021 and 2020, respectively.

On December 31, 2021, the amount of unrecognized tax benefits was $724,000, including $87,000 of accrued interest and penalties. On December 31, 2020, the amount of unrecognized tax benefits was $702,000, including $79,000 of accrued interest and penalties. If recognized, the entire amount of the unrecognized tax benefits would affect the effective tax rate.

The tax years ended December 31, 2018, and later remain subject to examination by the Internal Revenue Service. For state purposes, the tax years ended December 31, 2016, and later remain open for examination. HTLF does not anticipate any significant increase or decrease in unrecognized tax benefits during the next twelve months.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 270
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

EMPLOYEE BENEFIT PLANS	12 Months Ended
EMPLOYEE BENEFIT PLANS	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS HTLF sponsors a defined contribution retirement plan covering substantially all employees. The plan includes matching contributions and non-elective contributions. Matching contributions and non-elective contributions are limited to a maximum amount of the participant's wages as defined by federal law. HTLF's subsidiaries made matching contributions of up to 3% of participants' wages in 2021, 2020, and 2019. Costs charged to operating expenses with respect to the matching contributions were $5.1 million, $4.1 million, and $3.9 million for 2021, 2020 and 2019, respectively. Non-elective contributions to this plan are subject to approval by the HTLF Board of Directors. The HTLF subsidiaries fund and record as an expense all approved contributions. Costs of these contributions, charged to operating expenses, were $5.1 million, $4.8 million, and $4.8 million for 2021, 2020 and 2019, respectively. In addition, HTLF has a non-qualified defined contribution plan that allows eligible employees to make voluntary contributions into a deferred compensation plan. Any non-elective contributions to this plan are subject to approval by the HTLF Board of Directors.

COMMITMENTS AND CONTINGENT LIABILITIES	12 Months Ended
COMMITMENTS AND CONTINGENT LIABILITIES	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENT LIABILITIES	COMMITMENTS AND CONTINGENT LIABILITIES HTLF utilizes a variety of financial instruments in the normal course of business to meet the financial needs of customers and to manage its exposure to fluctuations in interest rates. These financial instruments include lending related and other commitments as indicated below as well as derivative instruments shown in Note 12, "Derivative Financial Instruments." The HTLF banks make various commitments and incur certain contingent liabilities that are not presented in the accompanying consolidated financial statements. The commitments and contingent liabilities include various guarantees, commitments to extend credit and standby letters of credit. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. HTLF's bank subsidiaries evaluate the creditworthiness of customers to which they extend a credit commitment on a case-by-case basis and may require collateral to secure any credit extended. The amount of collateral obtained is based upon management's credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, property, plant and equipment and income-producing commercial properties. Standby letters of credit and financial guarantees are conditional commitments issued by HTLF's bank subsidiaries to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. At December 31, 2021, and at December 31, 2020, commitments to extend credit aggregated $3.83 billion and $3.26 billion, respectively, and standby letters of credit aggregated $51.4 million and $73.2 million, respectively. HTLF enters into commitments to sell mortgage loans to reduce interest rate risk on certain mortgage loans held for sale and loan commitments, which were recorded in the consolidated balance sheets at their fair values. HTLF does not anticipate any material loss as a result of the commitments and contingent liabilities. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages originated under HTLF's usual underwriting procedures and are most often sold on a nonrecourse basis. HTLF's agreements to sell residential mortgage loans in the normal course of business, primarily to GSE's, which usually require certain representations and warranties on the underlying loans sold, related to credit information, loan documentation, collateral, and insurability, which if subsequently are untrue or breached, could require HTLF to repurchase certain loans affected. HTLF had no repurchase obligation at both December 31, 2021 and December 31, 2020. HTLF had no new requests for repurchases during 2021 and 2020. There are certain legal proceedings pending against HTLF and its subsidiaries at December 31, 2021, that are ordinary routine litigation incidental to business. The aggregate amount of cash consideration paid in the AimBank transaction was reduced by $5.3 million as a holdback against any losses that might be incurred as a result of pending litigation involving a former customer. The balance of the holdback as of December 31, 2021 was $4.9 million. HTLF incurred $388,000 of legal expenses in 2021 associated with the pending litigation. HTLF does not currently anticipate any material exposure from the litigation, and that if any litigation losses are incurred, the holdback amount will be sufficient to cover such losses. The shareholders of AimBank are entitled to any remaining amount from the holdback after payment for any potential settlement and related legal expenses. While the ultimate outcome of this and any other ordinary routine litigation proceedings incidental to business cannot be predicted with certainty, it is the opinion of management that the resolution of these legal actions should not have a material effect on HTLF's consolidated financial position or results of operations.

STOCK-BASED COMPENSATION

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

STOCK-BASED COMPENSATION

HTLF may grant, through its Compensation, Nominating and Corporate Governance Committee (the "Compensation Committee") non-qualified and incentive stock options, stock appreciation rights, stock awards, restricted stock, restricted stock units and cash incentive awards, under its 2020 Long-Term Incentive Plan (the "Plan"). The Plan was approved by stockholders in May 2020 and replaces the 2012 Long-Term Incentive Plan. The Plan increased the number of shares of common stock authorized for issuance to 1,460,000 and made certain other changes to the Plan. At December 31, 2021, 1,192,760 shares of common stock were reserved for future issuance under awards that may be granted under the Plan to employees and directors of, and service providers to, HTLF or its subsidiaries.

ASC Topic 718, "Compensation-Stock Compensation" requires the measurement of the cost of employee services received in exchange for an award of equity instruments based upon the fair value of the award on the grant date. The cost of the award is based upon its fair value estimated on the date of grant and recognized in the consolidated statements of income over the vesting period of the award. The fair market value of restricted stock and restricted stock units is based on the fair value of the underlying shares of common stock on the date of grant. Forfeitures are accounted for as they occur.

HTLF's income tax expense included $312,000 of tax benefit for the year ended December 31, 2021, compared to a tax expense of $93,000 for the year ended December 31, 2020, related to the vesting and forfeiture of equity-based awards.

Restricted Stock Units

The Plan permits the Compensation Committee to grant restricted stock units ("RSUs"). The time-based RSUs represent the right, without payment, to receive shares of HTLF common stock at a specified date in the future. Generally, the time-based RSUs vest over three years in equal installments in March of each of the three years following the year of the grant.

The Compensation Committee has granted three-year performance-based RSUs. These performance-based RSUs will be earned based upon satisfaction of performance targets for the three-year performance period, which is defined in the RSU agreement. These performance-based RSUs or a portion thereof may vest after measurement of performance in relation to the performance targets.

The time-based RSUs may also vest upon death or disability, upon a change in control or upon a "qualified retirement" (as defined in the RSU agreement), and the three-year performance-based RSUs vest to the extent that they are earned upon death or disability or upon a "qualified retirement" (as defined in the RSU agreement) after measurement of performance.

All of HTLF's RSUs will be settled in common stock upon vesting and are not entitled to dividends until vested.

A summary of the status of RSUs as of December 31, 2021, 2020 and 2019, and changes during the years ended December 31, 2021, 2020, and 2019, follows:


	2021			2020			2019
	Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value
Outstanding at January 1	348,275	$	38.22	254,383	$	46.76	266,995	$	43.89
Granted	216,560	51.44		232,586	32.06		162,465	45.09
Vested	(149,350)	40.83		(119,916)	44.47		(148,158)	39.27
Forfeited	(25,600)	40.96		(18,778)	46.10		(26,919)	49.20
Outstanding at December 31	389,885	$	44.19	348,275	$	38.22	254,383	$	46.76

Total compensation costs recorded for RSUs were $8.5 million, $7.2 million and $5.8 million, for 2021, 2020 and 2019, respectively. As of December 31, 2021, there were $7.4 million of total unrecognized compensation costs related to the Plan for RSUs which are expected to be recognized through 2024.

Employee Stock Purchase Plan

HTLF maintains an employee stock purchase plan (the "ESPP"), which was adopted in May 2016 and replaced the 2006 ESPP, that permits all eligible employees to purchase shares of HTLF common stock at a discounted price as determined by the Compensation Committee. Under ASC Topic 718, compensation expense related to the ESPP of $228,000 was recorded in 2021, $186,000 was recorded in 2020, and $222,000 was recorded in 2019.

A maximum of 500,000 shares is available for purchase under the ESPP, and as of December 31, 2021, 290,236 shares remain available for purchase. Beginning with the 2020 plan year, the Compensation Committee authorized HTLF to make ESPP purchases semi-annually, and the purchases are to be made as soon as practicable on or after June 30 and December 31. For employee deferrals made in the 2021 plan year, shares purchased in 2021 totaled 46,899. For employee deferrals made in the 2020 plan year, shares purchased in 2020 totaled 43,207. On January 2, 2020, 32,179 shares were purchased under the ESPP for employee deferrals made during the plan year ended December 31, 2019.

STOCKHOLDER RIGHTS PLAN	12 Months Ended
STOCKHOLDER RIGHTS PLAN	Dec. 31, 2021
Temporary Equity Disclosure [Abstract]
STOCKHOLDER RIGHTS PLAN	STOCKHOLDER RIGHTS PLAN HTLF adopted an Amended and Restated Rights Agreement (the "Extended Rights Plan"), dated as of January 17, 2012, which became effective upon approval by the stockholders on May 16, 2012. The Extended Rights Plan expired on January 17, 2022 and has not been renewed or extended. In 2002, when the Rights Plan was originally created, HTLF designated 16,000 shares, par value $1.00 per share, of Series A Preferred Stock. There were no shares of Series A Preferred issued and outstanding at December 31, 2021 or December 31, 2020.

CAPITAL ISSUANCES	12 Months Ended
CAPITAL ISSUANCES	Dec. 31, 2021
Equity [Abstract]
CAPITAL ISSUANCES	CAPITAL ISSUANCES Common Stock For a description of the issuance of shares of HTLF common stock in connection with acquisitions, see Note 2, "Acquisitions," of the consolidated financial statements. For a description of the issuance of shares of HTLF common stock in connection with the 2020 Long-Term Incentive Plan and the 2016 ESPP, see Note 16, "Stock-Based Compensation." Series E Preferred Stock On June 26, 2020, HTLF issued 4,600,000 depositary shares, each representing a 1/400th ownership interest in a share of HTLF's 7.00% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E, (the "Series E Preferred Stock) par value $1.00 per share, with a liquidation preference of $10,000 per share of Series E Preferred Stock (equivalent to $25 per depositary share). Holders of the depositary shares are entitled to all proportional rights and preferences of the Series E Preferred Stock (including dividend, voting, redemption and liquidation rights). With respect to the payment of dividends and distributions upon HTLF’s liquidation, dissolution, or winding-up, the Series E Preferred Stock ranks: •senior to HTLF’s common stock and to any class or series of its capital stock that it may issue in the future that is not expressly stated to be on parity with or senior to the Series E Preferred Stock with respect to such dividends and distributions, including but not limited to HTLF’s Series A Junior Participating Preferred Stock; •on parity with, or equally to, any class or series of HTLF’s capital stock that it may issue in the future that is expressly stated to be on parity with the Series E Preferred Stock with respect to such dividends and distributions; and •junior to any class or series of HTLF’s capital stock that it may issue in the future that is expressly stated to be senior to the Series E Preferred Stock with respect to such dividends and distributions, if the issuance is approved by the holders of at least two-thirds of the outstanding shares of Series E Preferred Stock. HTLF will generally be able to pay dividends and distributions upon liquidation, dissolution or winding up only out of lawfully available assets for such payment after satisfaction of all claims for indebtedness and other non-equity claims. HTLF will pay dividends or make distributions on the Series E Preferred Stock only when, as, and if declared by its Board of Directors or a duly authorized committee of the Board. Under the terms of the Series E Preferred Stock, subject to certain important exceptions, the ability of HTLF to pay dividends on, make distributions with respect to, or to repurchase, redeem or otherwise acquire its common stock or any other stock ranking junior to or on parity with the Series E Preferred Stock is subject to restrictions unless the full dividends for the most recently completed dividend period have been declared and paid, or set aside for payment, on all outstanding shares of Series E Preferred Stock. Shelf Registration HTLF filed a universal shelf registration with the SEC to register debt or equity securities on August 8, 2019, that expires on August 8, 2022. This registration statement, which was effective immediately, provides HTLF the ability to raise capital, subject to market conditions and SEC rules and limitations, if HTLF's board of directors decides to do so. This registration statement permits HTLF, from time to time, in one or more public offerings, to offer debt securities, subordinated notes, common stock, preferred stock, depositary shares, warrants, rights, units or any combination of these securities. The amount of securities that may have been offered was not specified in the registration statement, and the terms of any future offerings were to be established at the time of the offering.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-URI http://asc.fasb.org/topic&trid=2208762

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 16
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496180-112644

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

REGULATORY CAPITAL REQUIREMENTS AND RESTRICTIONS ON SUBSIDIARY DIVIDENDS

12 Months Ended

Dec. 31, 2021

Federal Home Loan Banks [Abstract]

REGULATORY CAPITAL REQUIREMENTS AND RESTRICTIONS ON SUBSIDIARY DIVIDENDS

The HTLF banks are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the HTLF banks’ financial statements. The regulations prescribe specific capital adequacy guidelines that involve quantitative measures of a bank’s assets, liabilities and certain off balance sheet items as calculated under regulatory accounting practices. Capital classification is also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the HTLF banks to maintain minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital (as defined) to average assets (as defined).

The requirements to be categorized as well-capitalized under the Tier 1 leverage capital ratio is 4% for all banks. The minimum requirement to be well-capitalized for the Tier 1 risk-based capital ratio is 8%. The total risk-based capital ratio minimum requirement to be well-capitalized remained is 10%. Management believes, as of December 31, 2021 and 2020, that the HTLF banks met all capital adequacy requirements to which they were subject.

As of December 31, 2021 and 2020, the FDIC categorized each of the HTLF banks as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the HTLF banks must maintain minimum total risk-based, Tier 1 risk-based, Tier 1 common equity and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since December 31, 2021, that management believes have changed each institution’s category.

The HTLF banks’ actual capital amounts and ratios are also presented in the tables below, in thousands:


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2021
Total Capital (to Risk-Weighted Assets)
Consolidated	$	2,040,500	15.90	%	$	1,026,345	8.00	%	N/A
Dubuque Bank and Trust Company	180,934		13.07		110,758		8.00		$	138,447	10.00	%
Illinois Bank & Trust	135,986		12.88		84,466		8.00		105,583		10.00
Wisconsin Bank & Trust	124,009		14.27		69,499		8.00		86,874		10.00
New Mexico Bank & Trust	213,981		12.10		141,530		8.00		176,912		10.00
Arizona Bank & Trust	157,475		12.61		99,886		8.00		124,858		10.00
Rocky Mountain Bank	64,366		13.07		39,385		8.00		49,231		10.00
Citywide Banks	265,964		15.09		140,999		8.00		176,248		10.00


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2021
Minnesota Bank & Trust	87,263		14.79		47,194		8.00		58,993		10.00
Bank of Blue Valley	160,694		16.74		76,785		8.00		95,982		10.00
Premier Valley Bank	111,741		12.82		69,720		8.00		87,151		10.00
First Bank & Trust	282,231		15.48		145,823		8.00		182,279		10.00

Tier 1 Capital (to Risk-Weighted Assets)
Consolidated	$	1,590,111	12.39	%	$	769,759	6.00	%	N/A
Dubuque Bank and Trust Company	168,321		12.16		83,068		6.00		$	110,758	8.00	%
Illinois Bank & Trust	126,869		12.02		63,350		6.00		84,466		8.00
Wisconsin Bank & Trust	114,825		13.22		52,124		6.00		69,499		8.00
New Mexico Bank & Trust	198,728		11.23		106,147		6.00		141,530		8.00
Arizona Bank & Trust	147,098		11.78		74,915		6.00		99,886		8.00
Rocky Mountain Bank	59,159		12.02		29,538		6.00		39,385		8.00
Citywide Banks	244,722		13.89		105,749		6.00		140,999		8.00
Minnesota Bank & Trust	81,637		13.84		35,396		6.00		47,194		8.00
Bank of Blue Valley	150,305		15.66		57,589		6.00		76,785		8.00
Premier Valley Bank	104,336		11.97		52,290		6.00		69,720		8.00
First Bank & Trust	263,096		14.43		109,367		6.00		145,823		8.00
Common Equity Tier 1 (to Risk-Weighted Assets)
Consolidated	$	1,479,406	11.53	%	$	577,319	4.50	%	N/A
Dubuque Bank and Trust Company	168,321		12.16		62,301		4.50		$	89,991	6.50	%
Illinois Bank & Trust	126,869		12.02		47,512		4.50		68,629		6.50
Wisconsin Bank & Trust	114,825		13.22		39,093		4.50		56,468		6.50
New Mexico Bank & Trust	198,728		11.23		79,611		4.50		114,993		6.50
Arizona Bank & Trust	147,098		11.78		56,186		4.50		81,158		6.50
Rocky Mountain Bank	59,159		12.02		22,154		4.50		32,000		6.50
Citywide Banks	244,722		13.89		79,312		4.50		114,561		6.50
Minnesota Bank & Trust	81,637		13.84		26,547		4.50		38,346		6.50
Bank of Blue Valley	150,305		15.66		43,192		4.50		62,388		6.50
Premier Valley Bank	104,336		11.97		39,218		4.50		56,648		6.50
First Bank & Trust	263,096		14.43		82,025		4.50		118,481		6.50
Tier 1 Capital (to Average Assets)
Consolidated	$	1,590,111	8.57	%	$	742,155	4.00	%	N/A
Dubuque Bank and Trust Company	168,321		8.02		83,982		4.00		$	104,978	5.00	%
Illinois Bank & Trust	126,869		7.55		67,212		4.00		84,016		5.00
Wisconsin Bank & Trust	114,825		9.66		47,551		4.00		59,439		5.00
New Mexico Bank & Trust	198,728		7.78		102,173		4.00		127,716		5.00
Arizona Bank & Trust	147,098		7.99		73,605		4.00		92,006		5.00
Rocky Mountain Bank	59,159		8.27		28,614		4.00		35,767		5.00
Citywide Banks	244,722		9.54		102,587		4.00		128,233		5.00
Minnesota Bank & Trust	81,637		9.69		33,698		4.00		42,123		5.00
Bank of Blue Valley	150,305		10.75		55,921		4.00		69,901		5.00
Premier Valley Bank	104,336		9.22		45,256		4.00		56,570		5.00
First Bank & Trust	263,096		9.84		106,986		4.00		133,732		5.00


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2020
Total Capital (to Risk-Weighted Assets)
Consolidated	$	1,739,048	14.71	%	$	945,523	8.00	%	N/A
Dubuque Bank and Trust Company	177,782		13.94		102,018		8.00		$	127,523	10.00	%
Illinois Bank & Trust	133,674		13.13		81,432		8.00		101,790		10.00
Wisconsin Bank & Trust	121,899		14.35		67,956		8.00		84,945		10.00
New Mexico Bank & Trust	177,708		13.40		106,120		8.00		132,649		10.00
Arizona Bank & Trust	112,589		12.16		74,056		8.00		92,571		10.00
Rocky Mountain Bank	56,872		13.49		33,732		8.00		42,166		10.00
Citywide Banks	258,419		15.30		135,097		8.00		168,871		10.00
Minnesota Bank & Trust	85,566		13.11		52,206		8.00		65,258		10.00
Bank of Blue Valley	157,093		17.40		72,240		8.00		90,300		10.00
Premier Valley Bank	93,032		12.62		58,968		8.00		73,710		10.00
First Bank & Trust	304,397		15.34		158,705		8.00		198,381		10.00
Tier 1 Capital (to Risk-Weighted Assets)
Consolidated	$	1,401,131	11.85	%	$	709,142	6.00	%	N/A
Dubuque Bank and Trust Company	164,316		12.89		76,514		6.00		$	102,018	8.00	%
Illinois Bank & Trust	121,513		11.94		61,074		6.00		81,432		8.00
Wisconsin Bank & Trust	111,985		13.18		50,967		6.00		67,956		8.00
New Mexico Bank & Trust	161,750		12.19		79,590		6.00		106,120		8.00
Arizona Bank & Trust	102,882		11.11		55,542		6.00		74,056		8.00
Rocky Mountain Bank	51,597		12.24		25,299		6.00		33,732		8.00
Citywide Banks	237,295		14.05		101,323		6.00		135,097		8.00
Minnesota Bank & Trust	78,661		12.05		39,155		6.00		52,206		8.00
Bank of Blue Valley	145,795		16.15		54,180		6.00		72,240		8.00
Premier Valley Bank	85,456		11.59		44,226		6.00		58,968		8.00
First Bank & Trust	279,521		14.09		119,029		6.00		158,705		8.00
Common Equity Tier 1 (to Risk Weighted Assets)
Consolidated	$	1,290,426	10.92	%	$	531,857	4.50	%	N/A
Dubuque Bank and Trust Company	164,316		12.89		57,385		4.50		$	82,890	6.50	%
Illinois Bank & Trust	121,513		11.94		45,806		4.50		66,164		6.50
Wisconsin Bank & Trust	111,985		13.18		38,225		4.50		55,214		6.50
New Mexico Bank & Trust	161,750		12.19		59,692		4.50		86,222		6.50
Arizona Bank & Trust	102,882		11.11		41,657		4.50		60,171		6.50
Rocky Mountain Bank	51,597		12.24		18,974		4.50		27,408		6.50
Citywide Banks	237,295		14.05		75,992		4.50		109,766		6.50
Minnesota Bank & Trust	78,661		12.05		29,366		4.50		42,418		6.50
Bank of Blue Valley	145,795		16.15		40,635		4.50		58,695		6.50
Premier Valley Bank	85,456		11.59		33,170		4.50		47,912		6.50
First Bank & Trust	279,521		14.09		89,271		4.50		128,948		6.50


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
Tier 1 Capital (to Average Assets)
Consolidated	$	1,401,131	9.02	%	$	621,275	4.00	%	N/A
Dubuque Bank and Trust Company	164,316		8.52		77,150		4.00		$	96,437	5.00	%
Illinois Bank & Trust	121,513		8.22		59,129		4.00		73,912		5.00
Wisconsin Bank & Trust	111,985		9.67		46,337		4.00		57,921		5.00
New Mexico Bank & Trust	161,750		8.11		79,764		4.00		99,705		5.00
Arizona Bank & Trust	102,882		9.09		45,295		4.00		56,619		5.00
Rocky Mountain Bank	51,597		8.41		24,552		4.00		30,690		5.00
Citywide Banks	237,295		9.67		98,182		4.00		122,728		5.00
Minnesota Bank & Trust	78,661		8.68		36,251		4.00		45,313		5.00
Bank of Blue Valley	145,795		10.93		53,343		4.00		66,679		5.00
Premier Valley Bank	85,456		8.57		39,893		4.00		49,866		5.00
First Bank & Trust	279,521		17.63		63,407		4.00		79,259		5.00

The ability of HTLF to pay dividends to its stockholders is dependent upon dividends paid by its subsidiaries. The HTLF banks are subject to certain statutory and regulatory restrictions on the amount they may pay in dividends. To maintain acceptable capital ratios for the Banks, certain portions of their retained earnings are not available for the payment of dividends. Retained earnings that could be available for the payment of dividends to HTLF totaled approximately $758.6 million as of December 31, 2021, under the most restrictive minimum capital requirements. Retained earnings that could be available for the payment of dividends to HTLF totaled approximately $502.1 million as of December 31, 2021, under the capital requirements to remain well capitalized.

- Definition

The entire disclosure for regulatory capital requirement for depository and lending institutions. Institutions include, but not are not limited to, finance company, insured depository institution, bank holding company, savings and loan association holding company, bank and savings institution not federally insured, mortgage company, foreign financial institution and credit union.

+ References + Details

FAIR VALUE

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

FAIR VALUE

HTLF utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Securities carried at fair value, which include available for sale, trading securities and equity securities with a readily determinable fair value, and derivatives are recorded in the consolidated balance sheets at fair value on a recurring basis. Additionally, from time to time, HTLF may be required to record at fair value other assets on a nonrecurring basis such as loans held for sale, loans held to maturity and certain other assets including, but not limited to, mortgage servicing rights, commercial servicing rights and other real estate owned. These nonrecurring fair value adjustments typically involve application of lower of cost or fair value accounting or write-downs of individual assets.

Fair Value Hierarchy

Under ASC 820, assets and liabilities are grouped at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 — Valuation is based upon quoted prices for identical instruments in active markets.

Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. The following is a description of valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis.

Assets

Securities Available for Sale and Held to Maturity

Securities available for sale are recorded at fair value on a recurring basis. Securities held to maturity are generally recorded at cost. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities. Level 2 securities include U.S. government and agency securities, mortgage and asset-backed securities and private collateralized mortgage obligations, municipal bonds, equity securities and corporate debt securities. On a quarterly basis, a secondary independent pricing service is used for the securities portfolio to validate the pricing from HTLF's primary pricing service.

Equity Securities with a Readily Determinable Fair Value

Equity securities with a readily determinable fair value generally include Community Reinvestment Act mutual funds and are classified as Level 2 due to the infrequent trading of these securities. The fair value is based on the price per share.

Loans Held for Sale

Loans held for sale are carried at the lower of cost or fair value on an aggregate basis. The fair value of loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, HTLF classifies loans held for sale subjected to nonrecurring fair value adjustments as Level 2.

Loans Held to Maturity

HTLF does not record loans held to maturity at fair value on a recurring basis. However, from time to time, certain loans are considered collateral dependent and an allowance for credit losses is established. The fair value of individually assessed loans is measured using the fair value of the collateral. In accordance with ASC 820, individually assessed loans measured at fair value are classified as nonrecurring Level 3 in the fair value hierarchy.

Premises, Furniture and Equipment Held for Sale

HTLF values premises, furniture and equipment held for sale based on third-party appraisals less estimated disposal costs. HTLF considers third party appraisals, as well as independent fair value assessments from Realtors or persons involved in selling bank premises, furniture and equipment, in determining the fair value of particular properties. Accordingly, the valuation of premises, furniture and equipment held for sale is subject to significant external and internal judgment. HTLF periodically reviews premises, furniture and equipment held for sale to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. Premises, furniture and equipment held for sale are classified as nonrecurring Level 3 in the fair value hierarchy.

Mortgage Servicing Rights

Mortgage servicing rights assets represent the value associated with servicing residential real estate loans that have been sold to outside investors with servicing retained. The fair value for servicing assets is determined through discounted cash flow analysis and utilizes discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Mortgage servicing rights are subject to impairment testing. The carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including note type and note term. If the valuation model reflects a value less than the carrying value, mortgage servicing rights are adjusted to fair value through a valuation allowance. HTLF classifies mortgage servicing rights as nonrecurring with Level 3 measurement inputs.

Commercial Servicing Rights

Commercial servicing rights assets represent the value associated with servicing commercial loans guaranteed by the Small Business Administration and United States Department of Agriculture that have been sold with servicing retained by HTLF. HTLF uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its commercial servicing rights. The fair value for servicing assets is determined through market prices for comparable servicing contracts, when available, or through a valuation model that calculates the present value of estimated future net servicing income. Inputs utilized include discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Commercial servicing rights are subject to impairment testing, and the carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. If the valuation model reflects a fair value less than the carrying value, commercial servicing rights are adjusted to fair value through a valuation allowance. HTLF classifies commercial servicing rights as nonrecurring with Level 3 measurement inputs.

Derivative Financial Instruments

HTLF's current interest rate risk strategy includes interest rate swaps. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. To comply with the provisions of ASC 820, HTLF incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, HTLF has considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although HTLF has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of December 31, 2021, and December 31, 2020, HTLF has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, HTLF has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

Interest Rate Lock Commitments

HTLF uses an internal valuation model that relies on internally developed inputs to estimate the fair value of its interest rate lock commitments which is based on unobservable inputs that reflect management's assumptions and specific information about each borrower. Interest rate lock commitments are classified in Level 3 of the fair value hierarchy.

Forward Commitments

The fair value of forward commitments is estimated using an internal valuation model, which includes current trade pricing for similar financial instruments in active markets that HTLF has the ability to access and are classified in Level 2 of the fair value hierarchy.

Other Real Estate Owned

Other real estate owned ("OREO") represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the fair value of the property at the time of acquisition (representing the property's cost basis), plus any acquisition costs, or the estimated fair value of the property, less disposal costs. HTLF considers third party appraisals, as well as independent fair value assessments from realtors or persons involved in selling OREO, in determining the fair value of particular properties. Accordingly, the valuation of OREO is subject to significant external and internal judgment. HTLF periodically reviews OREO to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. OREO is classified as nonrecurring Level 3 of the fair value hierarchy.

The tables below present HTLF's assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2021, and December 31, 2020, in thousands, aggregated by the level in the fair value hierarchy within which those measurements fall:


	Total Fair Value		Level 1		Level 2		Level 3
December 31, 2021
Assets

Securities available for sale
U.S. treasuries	$	1,008	$	1,008	$	—	$	—
U.S. agencies	193,384		—		193,384		—
Obligations of states and political subdivisions	2,085,033		—		2,085,033		—
Mortgage-backed securities - agency	2,349,289		—		2,349,289		—
Mortgage-backed securities - non-agency	1,743,379		—		1,743,379		—
Commercial mortgage-backed securities - agency	123,912		—		123,912		—
Commercial mortgage-backed securities - non-agency	600,888		—		600,888		—
Asset-backed securities	409,653		—		409,653		—
Corporate bonds	3,040		—		3,040		—
Equity securities with a readily determinable fair value	20,788		—		20,788		—
Derivative financial instruments(1)	23,891		—		23,891		—


	Total Fair Value		Level 1		Level 2		Level 3
Interest rate lock commitments	1,306		—		—		1,306
Forward commitments	32		—		32		—
Total assets at fair value	$	7,555,603	$	1,008	$	7,553,289	$	1,306
Liabilities
Derivative financial instruments(2)	$	25,099	$	—	$	25,099	$	—
Forward commitments	95		—		95		—
Total liabilities at fair value	$	25,194	$	—	$	25,194	$	—

(1) Includes back-to-back loan swaps and free standing derivative instruments.
(2) Includes embedded derivatives, fair value hedges and back-to-back loan swaps.
December 31, 2020
Assets

Securities available for sale
U.S. treasuries	$	2,026	$	2,026	$	—	$	—
U.S. agencies	166,779		—		166,779		—
Obligations of states and political subdivisions	1,635,227		—		1,635,227		—
Mortgage-backed securities - agency	1,355,270		—		1,355,270		—
Mortgage-backed securities - non-agency	1,449,116		—		1,449,116		—
Commercial mortgage-backed securities - agency	174,153		—		174,153		—
Commercial mortgage-backed securities - non-agency	252,767		—		252,767		—
Asset-backed securities	1,069,266		—		1,069,266		—
Corporate bonds	3,742		—		3,742		—
Equity securities	19,629		—		19,629		—
Derivative financial instruments(1)	44,102		—		44,102		—
Interest rate lock commitments	1,827		—		—		1,827
Forward commitments	—		—		—		—
Total assets at fair value	$	6,173,904	$	2,026	$	6,170,051	$	1,827
Liabilities
Derivative financial instruments(2)	$	51,962	$	—	$	51,962	$	—
Forward commitments	697		—		697		—
Total liabilities at fair value	$	52,659	$	—	$	52,659	$	—

(1) Includes embedded derivatives, back-to-back loan swaps and cash flow hedges.
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps and free standing derivative instruments.

The tables below present HTLF's assets that are measured at fair value on a nonrecurring basis, in thousands:


	Fair Value Measurements at December 31, 2021
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		(Gains)/Losses
Collateral dependent individually assessed loans:
Commercial and industrial	$	8,989	$	—	$	—	$	8,989	$	275
Owner occupied commercial real estate	8,447		—		—		8,447		—
Non-owner occupied commercial real estate	11,946		—		—		11,946		1,637
Real estate construction	—		—		—		—		—
Agricultural and agricultural real estate	11,404		—		—		11,404		372
Residential real estate	855		—		—		855		—
Consumer	—		—		—		—		—
Total collateral dependent individually assessed loans	$	41,641	$	—	$	—	$	41,641	$	2,284
Loans held for sale	$	21,640	$	—	$	21,640	$	—	$	(813)
Other real estate owned	1,927		—		—		1,927		686
Premises, furniture and equipment held for sale	10,828		—		—		10,828		241
Servicing rights	6,890		—		—		6,890		(1,088)


	Fair Value Measurements at December 31, 2020
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		(Gains)/Losses
Collateral dependent individually assessed loans:
Commercial and industrial	$	11,256	$	—	$	—	$	11,256	$	451
Owner occupied commercial real estate	5,874		—		—		5,874		11,631
Non-owner occupied commercial real estate	4,907		—		—		4,907		—
Real estate construction	—		—		—		—		—
Agricultural and agricultural real estate	12,451		—		—		12,451		—
Residential real estate	—		—		—		—		—
Consumer	—		—		—		—		—
Total collateral dependent impaired loans	$	34,488	$	—	$	—	$	34,488	$	12,082
Loans held for sale	$	57,949	$	—	$	57,949	$	—	$	(982)
Other real estate owned	6,624		—		—		6,624		1,044
Premises, furniture and equipment held for sale	6,499		—		—		6,499		3,288
Servicing rights	5,189		—		—		5,189		1,778

The following tables present additional quantitative information about assets measured at fair value on a recurring and nonrecurring basis and for which HTLF has utilized Level 3 inputs to determine fair value, in thousands:

Fair Value at 12/31/21

Valuation Technique

Unobservable Input

Range (Weighted Average)

Interest rate lock
commitments

$

1,306

Discounted cash flows

Closing ratio

0 - 99% (88%)(1)

Premises, furniture and equipment held for sale

10,828

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

Fair Value at 12/31/21

Valuation Technique

Unobservable Input

Range (Weighted Average)

Other real estate owned

1,927

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-10%(3)

Servicing rights

6,890

Discounted cash flows

Discount rate

9 - 11% (9.02%)(4)

Constant prepayment rate

13.1 - 18.6% (13.4%)(4)

Collateral dependent individually assessed loans:

Commercial and industrial

$

8,989

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-6%(3)

Owner occupied commercial real estate

8,447

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-7%(3)

Non-owner occupied commercial real estate

11,946

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

Agricultural and agricultural real estate

11,404

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0%-7%%(3)

Residential real estate

855

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-7%(3)

(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.

(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.

(3) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

(4) The significant unobservable inputs used in the discounted cash flow analysis are the discount rate and constant prepayment rate.

Fair Value at 12/31/20

Valuation Technique

Unobservable Input

Range (Weighted Average)

Interest rate lock commitments

$

1,827

Discounted cash flows

Closing ratio

0 - 99% (86%)(1)

Premises, furniture and equipment held for sale

6,499

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

Other real estate owned

6,624

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-10%(3)

Servicing rights

5,189

Discounted cash flows

Discount rate

9 - 11% (9.02%)(4)

Constant prepayment rate

7.3 - 18.8% (16.2%)(4)

Collateral dependent individually assessed loans:

Commercial and industrial

11,256

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-8%(3)

Owner occupied commercial real estate

5,874

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-12%(3)

Non-owner occupied commercial real estate

4,907

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-10%(3)

Agricultural and agricultural real estate

12,451

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.

(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.

(3) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

(4) The significant unobservable inputs used in the discounted cash flow analysis are the discount rate and constant prepayment rate.

The changes in fair value of the interest rate lock commitments, which are Level 3 financial instruments and are measured on a recurring basis, are summarized in the following table, in thousands:


	For the Years Ended
	December 31, 2021		December 31, 2020
Balance at January 1,	$	1,827	$	681

Total gains (losses), net, included in earnings	(2,345)		2,803
Issuances	15,403		17,221
Settlements	(13,579)		(18,878)
Balance at period end,	$	1,306	$	1,827

Gains included in net gains on sale of loans held for sale attributable to interest rate lock commitments held at December 31, 2021, and December 31, 2020, were $1.3 million and $1.8 million, respectively.

The table below is a summary of the estimated fair value of HTLF's financial instruments (as defined by ASC 825) as of December 31, 2021, and December 31, 2020, in thousands. The carrying amounts in the following table are recorded in the consolidated balance sheets under the indicated captions. In accordance with ASC 825, the assets and liabilities that are not financial instruments are not included in the disclosure, including the value of the commercial and mortgage servicing rights, premises, furniture and equipment, premises, furniture and equipment held for sale, OREO, goodwill, other intangibles and other liabilities.

HTLF does not believe that the estimated information presented below is representative of the earnings power or value of HTLF. The following analysis, which is inherently limited in depicting fair value, also does not consider any value associated with either existing customer relationships or the ability of HTLF to create value through loan origination, obtaining deposits or fee generating activities. Many of the estimates presented below are based upon the use of highly subjective information and

assumptions and, accordingly, the results may not be precise. Management believes that fair value estimates may not be comparable between financial institutions due to the wide range of permitted valuation techniques and numerous estimates which must be made. Furthermore, because the disclosed fair value amounts were estimated as of the balance sheet date, the amounts actually realized or paid upon maturity or settlement of the various financial instruments could be significantly different.


					Fair Value Measurements at December 31, 2021
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	435,599	$	435,599	$	435,599	$	—	$	—
Time deposits in other financial institutions	2,894		2,894		2,894		—		—
Securities:

Carried at fair value	7,530,374		7,530,374		1,008		7,529,366		—




Held to maturity	84,709		94,139		—		94,139		—
Other investments	82,567		82,567		—		82,567		—

Loans held for sale	21,640		21,640		—		21,640		—
Loans, net:
Commercial	2,617,347		2,603,001		—		2,594,012		8,989
PPP	199,883		199,883		—		199,883		—
Owner occupied commercial real estate	2,221,120		2,222,030		—		2,213,583		8,447
Non-owner occupied commercial real estate	1,992,683		1,998,161		—		1,986,215		11,946
Real estate construction	833,581		844,578		—		844,578		—
Agricultural and agricultural real estate	748,540		749,238		—		737,834		11,404
Residential real estate	820,856		819,178		—		818,323		855
Consumer	410,474		415,487		—		415,487		—
Total Loans, net	9,844,484		9,851,556		—		9,809,915		41,641

Cash surrender value on life insurance	191,722		191,722		—		191,722		—
Derivative financial instruments(1)	23,891		23,891		—		23,891		—
Interest rate lock commitments	1,306		1,306		—		—		1,306
Forward commitments	32		32		—		32		—
Financial liabilities:
Deposits
Demand deposits	6,495,326		6,495,326		—		6,495,326		—
Savings deposits	8,897,909		8,897,909		—		8,897,909		—
Time deposits	1,024,020		1,024,020		—		1,024,020		—
Short term borrowings	131,597		131,597		—		131,597		—
Other borrowings	372,072		373,194		—		373,194		—
Derivative financial instruments(2)	25,099		25,099		—		25,099		—
Forward commitments	95		95		—		95		—

(1) Includes back-to-back loan swaps and free standing derivative instruments.
(2) Includes embedded derivatives, fair value hedges and back-to-back loan swaps.


					Fair Value Measurements at December 31, 2020
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	337,903	$	337,903	$	337,903	$	—	$	—
Time deposits in other financial institutions	3,129		3,129		3,129		—		—
Securities:

Carried at fair value	6,127,975		6,127,975		2,026		6,125,949		—




Held to maturity	88,839		100,041		—		100,041		—
Other investments	75,253		75,523		—		75,523		—

Loans held for sale	57,949		57,949		—		57,949		—
Loans, net:
Commercial and industrial	2,495,981		2,391,041		—		2,379,785		11,256
PPP	957,785		957,785		—		957,785		—
Owner occupied commercial real estate	1,756,405		1,745,397		—		1,739,523		5,874
Non-owner occupied commercial real estate	1,900,608		1,892,213		—		1,887,306		4,907
Real estate construction	843,140		849,224		—		849,224		—
Agricultural and agricultural real estate	707,397		697,729		—		685,278		12,451
Residential real estate	828,507		828,366		—		828,366		—
Consumer	401,622		407,914		—		407,914		—
Total Loans, net	9,891,445		9,769,669		—		9,735,181		34,488
Cash surrender value on life insurance	187,664		187,664		—		187,664		—
Derivative financial instruments(1)	44,102		44,102		—		44,102		—
Interest rate lock commitments	1,827		1,827		—		—		1,827
Forward commitments	—		—		—		—		—
Financial liabilities:
Deposits
Demand deposits	5,688,810		5,688,810		—		5,688,810		—
Savings deposits	8,019,704		8,019,704		—		8,019,704		—
Time deposits	1,271,391		1,273,468		—		1,273,468		—

Short term borrowings	167,872		167,872		—		167,872		—
Other borrowings	457,042		458,806		—		458,806		—
Derivative financial instruments(2)	51,962		51,962		—		51,962		—
Forward commitments	697		697		—		697		—

(1) Includes embedded derivatives, back-to-back loan swaps and cash flow hedges.
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps and free standing derivative instruments.

Cash and Cash Equivalents — The carrying amount is a reasonable estimate of fair value due to the short-term nature of these instruments.

Time Deposits in Other Financial Institutions — The carrying amount is a reasonable estimate of the fair value due to the short-term nature of these instruments.

Securities — For equity securities with a readily determinable fair value and debt securities either held to maturity, available for

sale or trading, fair value equals quoted market price if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities. For Level 3 securities, HTLF utilizes independent pricing provided by third

party vendors or brokers.

Other Investments — Fair value measurement of other investments, which consists primarily of FHLB stock, are based on their redeemable value, which is at cost. The market for these securities is restricted to the issuer of the stock and subject to impairment evaluation.

Loans — The fair value of loans were determined using an exit price methodology. The exit price estimation of fair value is based on the present value of the expected cash flows. The projected cash flows are based on the contractual terms of the loans, adjusted for prepayments and a discount rate based on the relative risk of the cash flows. Other considerations include the loan type, remaining life of the loan and credit risk.

The fair value of individually assessed or impaired loans is measured using the fair value of the underlying collateral. The fair value of loans held for sale is estimated using quoted market prices or sales contracts.

Cash surrender value on life insurance — Life insurance policies are held on certain officers. The carrying value of these policies approximates fair value as it is based on the cash surrender value adjusted for other charges or amounts due that are probable at settlement. As such, HTLF classifies the estimated fair value of the cash surrender value on life insurance as Level 2.

Derivative Financial Instruments — The fair value of all derivatives is estimated based on the amount that HTLF would pay or would be paid to terminate the contract or agreement, using current rates, and when appropriate, the current creditworthiness of the counter-party.

Interest Rate Lock Commitments — The fair value of interest rate lock commitments is estimated using an internal valuation model, which includes grouping the interest rate lock commitments by interest rate and terms, applying an estimated closing ratio based on historical experience, and then multiplying by quoted investor prices determined to be reasonably applicable to the loan commitment groups based on interest rate, terms, and rate lock expiration dates of the loan commitment group.

Forward Commitments — The fair value of these instruments is estimated using an internal valuation model, which includes current trade pricing for similar financial instruments.

Deposits — The fair value of demand deposits, savings accounts and certain money market deposits is the amount payable on demand at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. If the fair value of the fixed maturity certificates of deposit is calculated at less than the carrying amount, the carrying value of these deposits is reported as the fair value.

Short-term and Other Borrowings — Rates currently available to HTLF for debt with similar terms and remaining maturities are used to estimate fair value of existing debt.

Commitments to Extend Credit, Unused Lines of Credit and Standby Letters of Credit — Based upon management's analysis of the off balance sheet financial instruments, there are no significant unrealized gains or losses associated with these financial instruments based upon review of the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

REVENUE

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

REVENUE

ASC 606, Revenue from Contracts with Customers, requires revenue to be recognized at an amount that reflects the consideration to which HTLF expects to be entitled in exchange for transferring goods or services to a customer. ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of HTLF's revenue streams including interest income, loan servicing income, net securities gain, net unrealized gains and losses on equity securities, net gains on sale of loans held for sale, valuation adjustment on servicing rights, income from bank owned life insurance and other noninterest income are outside the scope of ASC 606. Revenue streams including service charges and fees, interchange fees on credit and debit cards, trust fees and brokerage and insurance commissions are within the scope of ASC 606.

Service Charges and Fees

Service charges and fees consist of revenue generated from deposit account related service charges and fees, overdraft fees, customer service fees and other service charges, credit card fee income, debit card income and other service charges and fees.

Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders and other deposit account related fees. HTLF's performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees, including overdraft fees, are largely transaction based, and therefore, the performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts.

Customer service fees and other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. HTLF's performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month.

Credit card fee income and debit card income are comprised of interchange fees, ATM fees, and merchant services income. Credit card fee income and debit card income are earned whenever the banks' debit and credit cards are processed through card payment networks such as Visa. ATM fees are primarily generated when a bank cardholder uses an ATM that is not owned by one of HTLF's banks or a non-bank cardholder uses HTLF-owned ATM. Merchant services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees.

Trust Fees

Trust fees are primarily comprised of fees earned from the management and administration of trusts and other customer assets. HTLF's performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the average daily market value or month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days before or after month end through a direct charge to customers’ accounts. HTLF does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. HTLF's performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered.

Brokerage and Insurance Commissions

Brokerage commission primarily consist of commissions related to broker-dealer contracts. The contracts are between the customer and the broker-dealer, and HTLF satisfies its performance obligation and earns commission when the transactions are completed. The recognition of revenue is based on a defined fee schedule and does not require significant judgment. Payment is received shortly after services are rendered. Insurance commissions are related to commissions received directly from the insurance carrier. HTLF acts as an insurance agent between the customer and the insurance carrier. HTLF's performance obligations and associated fee and commission income are defined with each insurance product with the insurance company. When insurance payments are received from customers, a portion of the payment is recognized as commission revenue.

The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the year ended December 31, 2021, 2020, and 2019, in thousands:


	For the Years Ended December 31,
	2021		2020		2019
In-scope of Topic 606
Service charges and fees
Service charges and fees on deposit accounts	$	16,414	$	14,441	$	12,790
Overdraft fees	11,005		9,166		11,543
Customer service and other service fees	220		177		331
Credit card fee income	21,623		16,026		15,594
Debit card income	10,441		7,657		11,899

Total service charges and fees	59,703		47,467		52,157
Trust fees	24,417		20,862		19,399
Brokerage and insurance commissions	3,546		2,756		3,786
Total noninterest income in-scope of Topic 606	$	87,666	$	71,085	$	75,342

Out-of-scope of Topic 606
Loan servicing income	$	3,276	$	2,977	$	4,843
Securities gains, net	5,910		7,793		7,659
Unrealized gain on equity securities, net	58		640		525
Net gains on sale of loans held for sale	20,605		28,515		15,555
Valuation adjustment on servicing rights	1,088		(1,778)		(911)
Income on bank owned life insurance	3,762		3,554		3,785
Other noninterest income	6,570		7,505		9,410
Total noninterest income out-of-scope of Topic 606	41,269		49,206		40,866
Total noninterest income	$	128,935	$	120,291	$	116,208

Contract Balances

HTLF does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of December 31, 2021, 2020, and 2019, HTLF did not have any significant contract balances or capitalized contract acquisition costs.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

+ Details

PARENT COMPANY ONLY FINANCIAL INFORMATION

12 Months Ended

Dec. 31, 2021

Condensed Financial Information Disclosure [Abstract]

PARENT COMPANY ONLY FINANCIAL INFORMATION

Condensed financial information for Heartland Financial USA, Inc. is as follows:


BALANCE SHEETS
(Dollars in thousands)
	December 31,
	2021		2020
Assets:
Cash and interest bearing deposits	$	259,830	$	84,728



Investment in subsidiaries	2,263,037		2,234,813
Other assets	81,020		68,263

Total assets	$	2,603,887	$	2,387,804
Liabilities and Stockholders’ equity:

Other borrowings	$	369,581	$	265,168
Accrued expenses and other liabilities	52,128		43,405
Total liabilities	421,709		308,573
Stockholders’ equity:
Preferred stock	110,705		110,705
Common stock	42,275		42,094
Capital surplus	1,071,956		1,062,083
Retained earnings	962,994		791,630
Accumulated other comprehensive income (loss)	(5,752)		72,719

Total stockholders’ equity	2,182,178		2,079,231
Total liabilities and stockholders’ equity	$	2,603,887	$	2,387,804


INCOME STATEMENTS
(Dollars in thousands)
	For the Years Ended December 31,
	2021		2020		2019
Operating revenues:
Dividends from subsidiaries	$	163,500	$	83,000	$	137,000


Other	1,885		1,948		893
Total operating revenues	165,385		84,948		137,893
Operating expenses:
Interest	12,851		13,573		15,044
Salaries and employee benefits	7,509		8,147		4,072
Professional fees	5,161		4,310		3,029
Other operating expenses	10,984		4,939		15,559
Total operating expenses	36,505		30,969		37,704
Equity in undistributed earnings	75,368		73,430		34,307
Income before income tax benefit	204,248		127,409		134,496
Income tax benefit	15,675		10,529		14,633
Net income	219,923		137,938		149,129
Preferred dividends	(8,050)		(4,451)		—

Net income available to common stockholders	$	211,873	$	133,487	$	149,129


STATEMENTS OF CASH FLOWS
(Dollars in thousands)
	For the Years Ended December 31,
	2021		2020		2019
Cash flows from operating activities:
Net income	$	219,923	$	137,938	$	149,129
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed earnings of subsidiaries	(75,368)		(73,430)		(34,307)

Gain on extinguishment of debt	—		—		(375)
Increase in accrued expenses and other liabilities	8,723		8,419		3,274
Increase in other assets	(13,069)		(19,168)		(12,248)

Excess tax (expense) benefit from stock based compensation	312		(93)		270
Other, net	12,632		6,375		4,103
Net cash provided by operating activities	153,153		60,041		109,846
Cash flows from investing activities:
Capital contributions to subsidiaries	(34,000)		(70,000)		(46,583)
Repayment of advances from subsidiaries	—		—		6,000





Net assets acquired	—		(41,982)		(594)
Net cash used by investing activities	(34,000)		(111,982)		(41,177)
Cash flows from financing activities:
Proceeds on short-term revolving credit line	—		—		—
Proceeds from borrowings	147,614		—		—
Repayments on short-term revolving credit line	—		—		—
Repayments of borrowings	(44,417)		(7,000)		(20,023)
Payment for the redemption of debt	—		—		(2,500)


Cash dividends paid	(48,559)		(31,906)		(24,607)

Proceeds from issuance of preferred stock	—		110,705		—
Proceeds from issuance of common stock	1,311		3,004		661
Net cash provided by (used in) by financing activities	55,949		74,803		(46,469)
Net increase in cash and cash equivalents	175,102		22,862		22,200
Cash and cash equivalents at beginning of year	84,728		61,866		39,666
Cash and cash equivalents at end of year	$	259,830	$	84,728	$	61,866
Supplemental disclosure:
Cumulative effect adjustment from the adoption of ASU 2016-13 on January 1, 2020	$	—	$	14,891	$	—
Dividends declared, not paid	2,013		2,013		—

Stock consideration granted for acquisitions	—		217,202		92,258

LEASES

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

LEASES

A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration.

Lessee Accounting

Substantially all of the leases in which HTLF is the lessee are comprised of real estate property for branches, ATM locations, and office space with terms extending through 2031. All of HTLF's leases are classified as operating leases, and therefore, were previously not recognized on the consolidated balance sheet. With the adoption of ASU 2016-02 "Leases" (Topic 842), operating lease agreements are required to be recognized on the consolidated balance sheet as a right-of use ("ROU") asset and a corresponding lease liability. HTLF elected not to include short-term leases (i.e., leases with initial terms of twelve months or less), or equipment leases (deemed immaterial) on the consolidated balance sheets.

The table below presents HTLF's ROU assets and lease liabilities as of December 31, 2021 and December 31, 2020, in thousands:


		As of December 31,
	Classification	2021		2020
Operating lease right-of-use assets	Other assets	$	22,630	$	21,557
Operating lease liabilities	Accrued expenses and other liabilities	$	26,125	$	25,337

The calculated amount of the ROU assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. HTLF’s lease agreements often include one or more options to renew at HTLF’s discretion. If at lease inception, HTLF considers the exercising of a renewal option to be reasonably certain, HTLF will include the extended term in the calculation of the ROU asset and lease liability. Regarding the discount rate, Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, HTLF utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. The variable lease cost primarily represents variable payments such as common area maintenance and utilities.

The table below presents the lease costs and supplemental information as of December 31, 2021, 2020 and 2019, in thousands:


	Income Statement Category	As of December 31,
Lease Cost		2021		2020		2019
Operating lease cost	Occupancy expense	$	8,013	$	6,071	$	6,031
Variable lease cost	Occupancy expense	47		72		145

Total lease cost		$	8,060	$	6,143	$	6,176
Supplemental Information
Noncash reduction of ROU assets	Occupancy expense	$	1,244	$	1,037	$	1,771
Noncash reduction lease liabilities	Occupancy expense	—		389		1,789

Supplemental balance sheet information		As of December 31, 2021
Weighted-average remaining operating lease term (in years)		5.99
Weighted-average discount rate for operating leases		2.69						%

Included in the noncash reduction of ROU assets in 2021 and 2020 are expenses related to lease modifications and ROU acceleration related to lease abandonments.

HTLF did not record any impairment on leases in 2021. HTLF recorded an impairment on one lease in 2020, and the impairment of $360,000 was recorded in gain/loss on sales/valuations of assets, net. No impairment losses were recorded in 2019.

A maturity analysis of operating lease liabilities and reconciliation of the undiscounted cash flows to the total of operating lease liabilities as of December 31, 2021 is as follows, in thousands:


Year ending December 31,
2022	$	6,595
2023	5,154
2024	3,484
2025	3,363
2026	2,940
Thereafter	6,837
Total lease payments	$	28,373
Less interest	(2,248)
Present value of lease liabilities	$	26,125

SUMMARY OF QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

12 Months Ended

Dec. 31, 2021

Quarterly Financial Information Disclosure [Abstract]

SUMMARY OF QUARTERLY FINANCIAL INFORMATION (UNAUDITED)


(Dollars in thousands, except per share data)
	As of and for the Quarter Ended
2021	December 31		September 30		June 30		March 31
Net interest income	$	137,194	$	142,543	$	141,218	$	139,605
Provision (benefit) for credit losses	(5,313)		(4,534)		(7,080)		(648)
Net interest income after provision for credit losses	142,507		147,077		148,298		140,253
Noninterest income	32,730		32,724		33,164		30,317
Noninterest expense	115,386		110,627		103,376		102,423
Income taxes	10,271		13,250		16,481		15,333
Net income	49,580		55,924		61,605		52,814


Preferred dividends	(2,012)		(2,013)		(2,012)		(2,013)

Net income available to common stockholders	$	47,568	$	53,911	$	59,593	$	50,801

Per share:
Earnings per share-basic	$	1.12	$	1.27	$	1.41	$	1.20
Earnings per share-diluted	1.12		1.27		1.41		1.20
Cash dividends declared on common stock	0.27		0.25		0.22		0.22
Book value per common share	49.00		48.79		48.50		46.13
Weighted average common shares outstanding	42,309,003		42,302,780		42,242,893		42,174,092
Weighted average diluted common shares outstanding	42,479,442		42,415,993		42,359,873		42,335,747


(Dollars in thousands, except per share data)
	As of and for the Quarter Ended
2020	December 31		September 30		June 30		March 31
Net interest income	$	132,575	$	122,497	$	124,146	$	112,511
Provision (benefit) for credit losses	17,072		1,678		26,796		21,520
Net interest income after provision for credit losses	115,503		120,819		97,350		90,991
Noninterest income	32,621		31,216		30,637		25,817
Noninterest expense	99,269		90,396		90,439		90,859
Income taxes	9,046		13,681		7,417		5,909
Net income	39,809		47,958		30,131		20,040


Preferred dividends	(2,014)		(2,437)		—		—

Net income available to common stockholders	$	37,795	$	45,521	$	30,131	$	20,040

Per share:
Earnings per share-basic	$	0.98	$	1.23	$	0.82	$	0.54
Earnings per share-diluted	0.98		1.23		0.82		0.54
Cash dividends declared on common stock	0.20		0.20		0.20		0.20
Book value per common share	46.77		46.11		44.42		42.21
Weighted average common shares outstanding	38,420,063		36,941,110		36,880,325		36,820,972
Weighted average diluted common shares outstanding	38,534,082		36,995,572		36,915,630		36,895,591

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Presentation	Principles of Presentation - The consolidated financial statements include the accounts of HTLF and its subsidiaries: Dubuque Bank and Trust Company; Illinois Bank & Trust; Wisconsin Bank & Trust; New Mexico Bank & Trust; Arizona Bank & Trust; Rocky Mountain Bank; Citywide Banks; Minnesota Bank & Trust; Bank of Blue Valley; Premier Valley Bank; First Bank & Trust; Citizens Finance Parent Co.; DB&T Insurance, Inc.; DB&T Community Development Corp.; Heartland Community Development, Inc.; Heartland Financial USA, Inc. Insurance Services; Citizens Finance Co.; Citizens Finance of Illinois Co.; Heartland Financial Statutory Trust IV; Heartland Financial Statutory Trust V; Heartland Financial Statutory Trust VI; Heartland Financial Statutory Trust VII; Morrill Statutory Trust I; Morrill Statutory Trust II; Sheboygan Statutory Trust I, CBNM Capital Trust I, Citywide Capital Trust III, Citywide Capital Trust IV, Citywide Capital Trust V, OCGI Statutory Trust III, OCGI Capital Trust IV, BVBC Capital Trust II, and BVBC Capital Trust III. All of HTLF’s subsidiaries are wholly-owned as of December 31, 2021. The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") and prevailing practices within the banking industry. In preparing such financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the balance sheets and revenues and expenses for the years then ended. Actual results could differ significantly from those estimates. A material estimate that is particularly susceptible to significant change relates to the determination of the allowance for credit losses.
Business Combinations	Business Combinations - HTLF applies the acquisition method of accounting in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 805, Business Combinations. Under the acquisition method, HTLF recognizes assets acquired, including identified intangible assets, and the liabilities assumed in acquisitions at fair value as of the acquisition date, with the acquisition-related transaction costs expensed in the period incurred. Determining the fair value of assets acquired and liabilities assumed often involves estimates based on third-party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques that may include estimates of attrition, inflation, asset growth rates, discount rates, multiples of earnings or other relevant factors. In addition, the determination of the useful lives over which an intangible asset will be amortized is subjective.
Cash and Cash Equivalents	Cash and Cash Equivalents - For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks, interest bearing deposits held at the Federal Reserve Bank, federal funds sold to other banks and other short-term investments. Generally, federal funds are purchased and sold for one-day periods.
Trading Securities, Available for Sale Debt Securities and Equity Securities, Allowance for Credit Losses on AFS Debt Securities, Securities, Securities Held to Maturity, and Allowance for Credit Losses on Held to Maturity Debt Securities	Trading Securities - Trading securities represent those securities HTLF intends to actively trade and are stated at fair value with changes in fair value reflected in noninterest income. HTLF had no trading securities at both December 31, 2021 and 2020. Available for Sale ("AFS") Debt Securities and Equity Securities - Available for sale securities consist of those securities not classified as held to maturity or trading, which management intends to hold for indefinite periods of time or that may be sold in response to changes in interest rates, prepayments or other similar factors. Available for sale securities are stated at fair value with any unrealized gain or loss, net of applicable income tax, reported as a separate component of stockholders’ equity. Security premiums and discounts are amortized/accreted using the interest method over the period from the purchase date to the expected maturity or call date of the related security. HTLF reviews the investment securities portfolio at the security level on a quarterly basis for potential credit losses, which takes into consideration numerous factors, and the relative significance of any single factor can vary by security. Some factors HTLF may consider include changes in security ratings, financial condition of the issuer, as well as security and industry specific economic conditions. In addition, with regard to debt securities, HTLF may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral. For certain debt securities in unrealized loss positions, HTLF prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. Realized securities gains or losses on securities sales (using specific identification method) are included in securities gains, net in the consolidated statements of income. Equity securities include Community Reinvestment Act mutual funds with readily determinable fair values and are carried at fair value. Certain equity securities do not have readily determinable fair values, such as Federal Reserve Bank stock and Federal Home Loan Bank stock, which are held for debt and regulatory purposes and are carried at cost minus impairment, if any, plus or minus changes resulting from observable price changes for the identical or similar investment of the same issuer. HTLF has not recorded any impairment or other adjustments to the carrying amount of these investments during the years ended December 31, 2021, and December 31, 2020. Allowance for Credit Losses on AFS Debt Securities - HTLF reviews the investment securities portfolio at the security level on a quarterly basis for potential credit losses, which takes into consideration numerous factors, and the relative significance of any single factor can vary by security. Some factors HTLF may consider include changes in security ratings, financial condition of the issuer, as well as security and industry specific economic conditions. In addition, with regard to debt securities, HTLF may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral. For certain debt securities in unrealized loss positions, HTLF prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. The decline in fair value of an AFS debt security due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through an allowance for credit losses, such as declines due to changes in market interest rates, are recorded through other comprehensive income, net of applicable taxes. Although these evaluations involve significant judgment, an unrealized loss in the fair value of a debt security is generally considered to not be related to credit when the fair value of the security is below the carrying value primarily due to changes in risk-free interest rates, there has not been significant deterioration in the financial condition of the issuer, and HTLF does not intend to sell nor does it believe it will be required to sell the security before the recovery of its cost basis. HTLF had no allowance for credit losses on AFS debt securities recorded at December 31, 2021, and December 31, 2020. Securities Held to Maturity - Securities which HTLF has the ability and positive intent to hold to maturity are classified as held to maturity. Such securities are stated at amortized cost, adjusted for premiums and discounts that are amortized/accreted using the interest method over the period from the purchase date to the expected maturity or call date of the related security. Allowance for Credit Losses on Held to Maturity Debt Securities - HTLF measures expected credit losses on held to maturity debt securities on a collective basis based on security type. The estimate of expected credit losses considers historical credit information that is adjusted for current conditions and supportable forecasts. HTLF's held to maturity debt securities consist primarily of investment grade obligations of states and political subdivisions. The forecast and forecast period used in the calculation of the allowance for credit losses for loans is used in calculating the allowance for credit losses on held to maturity debt securities. HTLF had no allowance for credit losses on held to maturity debt securities recorded at December 31, 2021, compared to $51,000 at December 31, 2020.
Loans Held to Maturity, Acquired Loans, Allowance for Credit Losses for Loans, Loans Held for Sale, Other Real Estate	Loans Held to Maturity - Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost, which is the principal amount outstanding, net of cumulative charge-offs, unamortized net deferred loan origination fees and costs and unamortized premiums or discounts on purchased loans. HTLF has a loan policy which establishes the credit risk appetite, lending standards and underwriting criteria designed so that HTLF may extend credit in a prudent and sound manner. The HTLF board of directors reviews and approves the loan policy on a regular basis. A reporting system supplements the review process by providing management and the board with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and nonperforming loans and potential problem loans. HTLF originates commercial and industrial loans and owner occupied commercial real estate loans for a wide variety of business purposes, including lines of credit for capital and operating purposes and term loans for real estate and equipment purchases. Non-owner occupied commercial real estate loans provide financing for various non-owner occupied or income producing properties. Real estate construction loans are generally short-term or interim loans that provide financing for acquiring or developing commercial income properties, multi-family projects or single-family residential homes. Agricultural and agricultural real estate loans provide financing for capital improvements and farm operations, as well as livestock and machinery purchases. Residential real estate loans are originated for the purchase or refinancing of single family residential properties. Consumer loans include loans for motor vehicles, home improvement, home equity and personal lines of credit. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. HTLF’s policy is to discontinue the accrual of interest income on any loan when, in the opinion of management, there is a reasonable doubt as to the timely collection of the interest and principal, normally when a loan is 90 days past due. When interest accruals are deemed uncollectible, interest credited to income in the current year is reversed and interest accrued in prior years is charged to the allowance for credit losses. A loan can be restored to accrual status if the borrower has resumed paying the full amount of the scheduled contractual interest and principal payments on the loan, and (1) all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within a reasonable period of time, and (2) there is a sustained period of repayment performance (generally a minimum of six months) by the borrower in accordance with the scheduled contractual terms. Acquired Loans - HTLF has acquired loans through acquisitions, some of which have experienced more than insignificant deterioration in credit quality since origination and are classified as PCD loans. HTLF considers the following criteria in determining PCD loans: •watch, substandard and non-accrual loans; •loans delinquent more than 30 days as of the acquisition date; •loans that have experienced more than one 30-59 day delinquency; •loans that have experienced any delinquency of more than 60 days; •loan with a TDR status as of the acquisition date; •loans with a Coronavirus Disease 2019 ("COVID-19") modification as of the acquisition date; •loans in high-risk industries based on macroeconomic conditions and local market conditions of the acquired entity on acquisition date. An allowance for credit losses on PCD loans is determined using the same allowance methodology as described below for loans held to maturity. The allowance for credit losses determined on a collective basis is allocated to individual loans. The sum of the PCD loan purchase price and allowance for credit loss becomes the initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Any subsequent changes to the credit quality of PCD loans are recognized in net income by adjusting the allowance for credit losses through provision expense. At acquisition, for purchased loans not defined as PCD loans ("non-PCD"), the purpose of the loan (e.g., business, agricultural or personal), the type of borrower (e.g., business or individual) and the type of collateral for the loan (e.g., commercial real estate, residential real estate, general business assets or unsecured) of each loan are considered in order to assign purchased loans into one of the following eight loan pools: commercial and industrial, Paycheck Protection Program ("PPP"), owner occupied commercial real estate, non-owner occupied commercial real estate, real estate construction, agricultural and agricultural real estate, residential real estate and consumer. For non-PCD loans, the premium or discount, if any, representing the excess of the amount of reasonably estimable and probable discounted future cash collections over the purchase price, is accreted into interest income using the interest method over the weighted average remaining contractual life of the loan pool. Because HTLF uses the pool method as described above, no adjustment is made to the discount of an individual loan on the specific date of a credit event with respect to such loan. Additionally, the premium or discount accretion is suspended on loans that subsequently become nonperforming. An allowance for credit losses for non-PCD loans is established through recognition of provision expense in net income using the same methodology as other loans held to maturity. Allowance for Credit Losses for Loans - The allowance for credit losses is a valuation account that is deducted from the loans held to maturity amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectibility of a loan balance is confirmed. Provisions for credit losses for loans and recoveries on loan previously charged-off by HTLF are added back to the allowance. HTLF's allowance model is designed to consider the current contractual term of the loan, defined as starting as of the most recent renewal date and ending at maturity date. Management's estimation of expected credit losses is based on relevant information about past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amounts, including expected defaults and prepayments. Historical loss experience is generally the starting point for estimating expected credit losses. Adjustments are made to historical loss experience to reflect differences in asset-specific risk characteristics, such as underwriting standards, portfolio mix or asset terms and differences in economic conditions, both current conditions and reasonable and supportable forecasts. If HTLF is not able to make or obtain reasonable and supportable forecasts for the entire life of the financial asset, it is required to estimate expected credit losses for the remaining life using an approach that reverts to historical credit loss information. The components of the allowance for credit losses are described more specifically below. Quantitative Factors The quantitative component of the allowance for credit losses is measured using historical loss experience using a look back period, currently over the most recent 13 years, on a pool basis for loans with similar risk characteristics. HTLF utilizes third-party software to calculate the expected credit losses using two separate methodologies. For certain commercial and agricultural loans, the expected credit losses are calculated through a transition matrix model derived probability of default and loss given default methodology. The transition matrix model determines the life of loan probability of default using the historical transitions of loans between risk ratings and through default. The probability of default and loss given default methodology have been developed using HTLF’s historical loss experience over the look back period. For smaller commercial and agricultural loans, residential real estate loans and consumer loans, a lifetime average historical loss rate is established for each pool of loans based upon an average loss rate calculated using HTLF historical loss experience over the look back-period. The risks in the commercial and industrial loan portfolio include the unpredictability of the cash flow of the borrowers and the variability in the value of the collateral securing the loans. Owner occupied commercial real estate loans are dependent upon the cash flow of the borrowers and the collateral value of the real estate. Non-owner occupied commercial real estate loans are typically dependent, in large part, on sufficient income from the properties securing the loans to cover the operating expenses and debt service. Real estate construction loans involve additional risks because funds are advanced based upon estimates of costs and the estimated value of the completed project. Additionally, real estate construction loans have a greater risk of default in a weaker economy because the source of repayment is reliant on the successful and timely sale of the project. Agricultural and agricultural real estate loans are dependent upon the profitable operation or management of the farm property securing the loan. Loans secured by farm equipment, livestock or crops may not provide an adequate source of repayment because of damage or depreciation. Residential real estate loans are dependent upon the borrower's ability to repay the loan and the underlying collateral value. Consumer loans are dependent upon the borrower's personal financial circumstances and continued financial stability. If a loan no longer shares similar risk characteristics with other loans in the pool, it is evaluated on an individual basis and is not included in the collective evaluation. Lending relationships with $500,000 or more of total exposure and are on nonaccrual are individually assessed using a collateral dependency calculation. A loan is collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. The impairment will be recognized by creating a specific reserve against the loan with a corresponding charge to provision expense. In most cases, the specific reserve will be charged off in the same quarter as the loss is probable. In some cases, when HTLF believes certain loans do not share the same risk characteristics with other loans in the pool, the standard allows for these loans to be individually assessed. All individually assessed loan calculations are completed at least semi-annually. Qualitative Factors HTLF's allowance methodology also has a qualitative component, the purpose of which is to provide management with a means to take into consideration changes in current conditions that could potentially have an effect, up or down, on the level of recognized loan losses, that, for whatever reason, fail to show up in the quantitative analysis performed in determining its base loan loss rates. HTLF utilizes the following qualitative factors, all of which are equally weighted: •changes in lending policies and procedures •changes in the nature of loans •experience and ability of management •changes in the credit quality of the loan portfolio •risk in acquired portfolios •concentrations of credit •other external factors The qualitative adjustments are based on the comparison of the current condition to the average condition over the look back period. The adjustment amount can be either positive or negative depending on whether or not the current condition is better or worse than the historical average. HTLF incorporates the adjustments for changes in current conditions using an overlay approach. The adjustments are applied as a percentage adjustment in addition to the calculated historical loss rates of each pool. These adjustments reflect the extent to which HTLF expects current conditions to differ from the conditions that existed for the period over which historical information was evaluated. HTLF utilizes an anchoring approach to determine the minimum and maximum amount of qualitative allowance for credit losses, which is determined by comparing the highest and lowest historical rate to the current quantitative allowance rate to calculate the rate for the adjustment. Economic Forecasting The allowance for credit losses estimate incorporates a reasonable and supportable forecast of various macro-economic indices over the remaining life of HTLF’s assets. HTLF utilizes an overlay approach for its economic forecasting component, similar to the method utilized for the qualitative factors. The length of the reasonable and supportable forecast period is a judgmental determination based on the level to which the entity can support its forecast of economic conditions that drive its estimate of expected loss. HTLF compares forecasted macro-economic indices, such as unemployment and gross domestic product, to the economic conditions that existed over HTLF's look back period. HTLF uses Moody's baseline economic forecast scenario, which is updated quarterly in HTLF's methodology. The economic forecast reverts to the historical mean immediately at the end of the reasonable and supportable forecast period. Because of the economic uncertainty associated with COVID-19, HTLF utilized a one-year reasonable and supportable forecast period for the calculation of the December 31, 2021, and December 31, 2020 allowance for credit losses. It is expected that actual economic conditions will, in many circumstances, turn out differently than forecasted because the ultimate outcomes during the forecast period may be affected by events that were unforeseen, such as economic disruption and fiscal or monetary policy actions, which are exacerbated by longer forecasting periods. This uncertainty would be relevant to the entity’s confidence level as to the outcomes being forecasted. That is, an entity is likely less confident in the ultimate outcome of events that will occur at the end of the forecast period as compared to the beginning. As a result, actual future economic conditions may not be an effective indicator of the quality of management’s forecasting process, including the length of the forecast period. Under the incurred credit losses methodology utilized in the prior periods, the allowance for loan losses was maintained at a level estimated by management to provide for known and inherent risks in the loan portfolio. The allowance for loan losses was based upon a continuing review of past loan loss experience, current economic conditions, volume growth, the underlying collateral value of the loans and other relevant factors. Loans which were deemed uncollectible were charged-off and deducted from the allowance for loan losses. Provisions for loan losses and recoveries on loans previously charged-off by Heartland were added to the allowance for loan losses. The incurred credit losses methodology included the establishment of a dual risk rating system, which allowed for the utilization of a probability of default and loss given default for certain commercial and agricultural loans in the calculation of the allowance for loan losses. The probability of default and loss given default methodology was developed using Heartland’s default and loss experience over historical observation periods. Heartland's incurred credit losses methodology also utilized loss emergence periods, which represented the average amount of time from the point that a loss was incurred to the point at which the loss was confirmed. The loss rates used in the allowance calculation were periodically re-evaluated and adjusted to reflect changes in historical loss levels or other risks. In addition to past loss experience, management also utilized certain qualitative factors in our incurred credit losses methodology including the overall composition of the loan portfolio, general economic conditions, types of loans, loan collateral values, and trends in loan delinquencies and non-performing assets. Loans Held for Sale - Loans held for sale are stated at the lower of cost or fair value on an aggregate basis. Gains or losses on sales are recorded in noninterest income. Direct loan origination costs and fees are deferred at origination of the loan. These deferred costs and fees are recognized in noninterest income as part of the gain or loss on sales of loans upon sale of the loan. At December 31, 2021 and 2020, loans held for sale primarily consisted of 1-4 family residential mortgages. Other Real Estate - Other real estate represents property acquired through foreclosures and settlements of loans. Property acquired is recorded at the estimated fair value of the property less disposal costs. The excess of carrying value over fair value less disposal costs is charged against the allowance for credit losses. Subsequent write downs estimated on the basis of later valuations and gains or losses on sales are charged to loss on sales/valuation of assets, net. Expenses incurred in maintaining such properties are charged to other real estate and loan collection expenses.
Troubled Debt Restructured Loans	Troubled Debt Restructured Loans - Loans are considered troubled debt restructured loans ("TDR") if concessions have been granted to borrowers that are experiencing financial difficulty. The concessions granted generally involve the modification of terms of the loan, such as changes in payment schedule or interest rate, which generally would not otherwise be considered. TDRs can involve loans remaining on nonaccrual, moving to nonaccrual, or continuing on accrual status, depending on the individual facts and circumstances of the borrower. Nonaccrual TDRs are included and treated consistently with all other nonaccrual loans. Generally, TDRs remain on nonaccrual until the customer has attained a sustained period of repayment performance under the modified loan terms (generally a minimum of six months). However, performance prior to the restructuring, or significant events that coincide with the restructuring, are considered in assessing whether the borrower can meet the new terms and whether the loan should be returned to or maintained on accrual status. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on nonaccrual status. During 2020, TDR treatments were updated due to COVID-19 and the Coronavirus Aid, Relief and Economic Security Act (the "CARES Act") regulation. Under the CARES Act, banking institutions are not required to classify modifications as TDRs if the following three conditions are met: 1) the deferral was related to COVID-19, 2) executed on a loan that was not more than 30 days past due as of December 31, 2019, and 3) executed between March 1, 2020 and the later of December 31, 2020 or the last day of the Declaration of National Emergency. HTLF has adopted the CARES Act rule for TDR classification and has enhanced its procedures for deferral monitoring. The National Emergency Declaration was in effect during 2021, and therefore, HTLF followed the CARES Act rule for TDR classification during the year ended December 31, 2021. A loan that is a TDR that has an interest rate consistent with market rates at the time of restructuring and is in compliance with its modified terms in the calendar year after the year in which the restructuring took place is no longer considered a TDR. To be considered in compliance with its modified terms, a loan that is a TDR must be in accrual status and must be current or less than 30 days past due under the modified repayment terms. A loan that has been modified at a below market rate will remain classified as a TDR. If the borrower’s financial conditions improve to the extent that the borrower qualifies for a new loan with market terms, the new loan will not be considered a TDR if HTLF's credit analysis shows the borrower's ability to perform under scheduled terms.
Allowance for Credit Losses on Unfunded Loan Commitments	Allowance for Credit Losses on Unfunded Loan Commitments - HTLF estimates expected credit losses over the contractual term of the loan for the unfunded portion of the loan commitment that is not unconditionally cancellable by HTLF using the same collective allowance methodology for credit losses for loans described above. Management uses an estimated average utilization rate to determine the exposure at default. The allowance for unfunded commitments is recorded in the Accrued Expenses and Other Liabilities section of the consolidated balance sheets.
Mortgage Servicing and Transfers of Financial Assets, and Servicing Rights, Net	Mortgage Servicing and Transfers of Financial Assets - HTLF regularly sells residential mortgage loans to others, primarily government sponsored entities, on a non-recourse basis. Sold loans are not included in the accompanying consolidated balance sheets. HTLF generally retains the right to service the sold loans for a fee. HTLF's First Bank and Trust subsidiary serviced mortgage loans primarily for government sponsored entities with aggregate unpaid principal balance of Servicing Rights, Net - Mortgage and commercial servicing rights associated with loans originated and sold, where servicing is retained, are initially capitalized at fair value and recorded on the consolidated statements of income as a component of gains on sale of loans held for sale. The values of these capitalized servicing rights are amortized as an offset to the loan servicing income earned in relation to the servicing revenue expected to be earned.The carrying values of these rights are reviewed quarterly for impairment based on the calculation of their fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including loan type and loan term. As of December 31, 2021, a valuation allowance of $327,000 was required on HTLF's mortgage servicing rights with an original term of 15 years, and a valuation allowance of $1.3 million was required on HTLF's mortgage servicing rights with an original term of 30 years. At December 31, 2020, a valuation allowance of $422,000 was required on HTLF's mortgage servicing rights with an original term of 15 years, and a valuation allowance of $1.4 million was required on HTLF's mortgage servicing rights with an original term of 30 years.
Premises, Furniture and Equipment, net and Premises, Furniture and Equipment Held for Sale	Premises, Furniture and Equipment, net - Premises, furniture and equipment are stated at cost less accumulated depreciation. The provision for depreciation of premises, furniture and equipment is determined by straight-line and accelerated methods over the estimated useful lives of 18 to 39 years for buildings, 15 years for land improvements and 3 to 7 years for furniture and equipment. Premises, Furniture and Equipment Held for Sale - Premises, furniture and equipment are stated at the estimated fair value less disposal costs. Subsequent write-downs and gains or losses on the sales are recorded to loss on sales/valuation of assets, net.
Goodwill and Core Deposit Intangibles and Customer Relationship Intangibles, Net	Goodwill - Goodwill represents the excess of the purchase price of acquired subsidiaries’ net assets over their fair value at the purchase date. HTLF assesses goodwill for impairment annually, and more frequently if events occur which may indicate possible impairment, and assesses goodwill at the reporting unit level, also giving consideration to overall enterprise value as part of that assessment. In evaluating goodwill for impairment, HTLF first assesses qualitative factors to determine whether it is more likely than not (that is, a likelihood of more than 50%) that the fair value of a reporting unit is less than its carrying amount. If HTLF concludes that it is more likely than not that the fair value of a reporting unit is more than its carrying value, then no further testing of goodwill assigned to the reporting unit is required. However, if HTLF concludes that it is more likely than not that the fair value of a reporting unit is less than its carrying value, then HTLF performs a quantitative goodwill impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment to recognize, if any. In addition, the income tax effects of tax deductible goodwill on the carrying amount of the reporting unit should be considered when measuring the goodwill impairment loss, if applicable. A goodwill impairment charge is recognized for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized cannot exceed the total amount of goodwill allocated to that reporting unit. Core Deposit Intangibles and Customer Relationship Intangibles, Net - Core deposit intangibles are amortized over 8 to 18 years on an accelerated basis. Customer relationship intangibles are amortized over 22 years on an accelerated basis. Annually, HTLF reviews these intangible assets for events or circumstances that may indicate a change in the recoverability of the underlying basis.
Cash Surrender Value on Life Insurance	Cash Surrender Value on Life Insurance - HTLF and its subsidiaries have purchased life insurance policies on the lives of certain officers. The one-time premiums paid for the policies, which coincide with the initial cash surrender value, are recorded as an asset. Increases or decreases in the cash surrender value, other than proceeds from death benefits, are recorded as noninterest income in income on bank owned life insurance. Proceeds from death benefits first reduce the cash surrender value attributable to the individual policy and then any additional proceeds are recorded in other noninterest income.
Income Taxes	Income Taxes - HTLF and its subsidiaries file a consolidated federal income tax return and separate or combined income or franchise tax returns as required by the various states. HTLF recognizes certain income and expenses in different time periods for financial reporting and income tax purposes. The provision for deferred income taxes is based on an asset and liability approach and represents the change in deferred income tax accounts during the year, including the effect of enacted tax rate changes. A valuation allowance is provided to reduce deferred tax assets if their expected realization is deemed not to be more likely than not. A tax position is recognized as a benefit only if it is "more likely than not" that the tax position would be sustained in a tax examination. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. HTLF recognizes interest and penalties related to income tax matters in income tax expense.
Derivative Financial Instruments and Mortgage Derivatives	Derivative Financial Instruments - HTLF uses derivative financial instruments as part of its interest rate risk management, which includes interest rate swaps, certain interest rate lock commitments and forward sales of securities related to mortgage banking activities. FASB ASC Topic 815 establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts, and for hedging activities. As required by ASC 815, HTLF records all derivatives on the consolidated balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the resulting designation. Derivatives used to hedge the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. To qualify for hedge accounting, HTLF must comply with the detailed rules and documentation requirements at the inception of the hedge, and hedge effectiveness is assessed at inception and periodically throughout the life of each hedging relationship. Hedge ineffectiveness, if any, is measured periodically throughout the life of the hedging relationship. For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of the derivative is initially reported in other comprehensive income (loss) and subsequently reclassified to interest income or expense when the hedged transaction affects earnings, while the ineffective portion of changes in the fair value of the derivative, if any, is recognized immediately in other noninterest income. HTLF assesses the effectiveness of each hedging relationship by comparing the cumulative changes in cash flows of the derivative hedging instrument with the cumulative changes in cash flows of the designated hedged item or transaction. No component of the change in the fair value of the hedging instrument is excluded from the assessment of hedge effectiveness. HTLF has fair value hedging relationships at December 31, 2021. HTLF uses hedge accounting in accordance with ASC 815, with the unrealized gains and losses, representing the change in fair value of the derivative and the change in fair value of the risk being hedged on the related loan, being recorded in the consolidated statements of income. The ineffective portions of the unrealized gains or losses, if any, are recorded in interest income and interest expense in the consolidated statements of income. HTLF uses statistical regression to assess hedge effectiveness, both at the inception of the hedge as well as on a continual basis. The regression analysis involves regressing the periodic change in fair value of the hedging instrument against the periodic changes in the fair value of the asset being hedged due to changes in the hedge risk. HTLF does not use derivatives for trading or speculative purposes. Derivatives not designated as hedges are not speculative and are used to manage HTLF’s exposure to interest rate movements and other identified risks, but do not meet the strict hedge accounting requirements of ASC 815. Mortgage Derivatives - HTLF uses interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans and mortgage backed securities. These commitments are considered derivative instruments. The fair value of these commitments is recorded on the consolidated balance sheets with the changes in fair value recorded in the consolidated statements of income as a component of gains on sale of loans held for sale. These derivative contracts are designated as free standing derivative contracts and are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and therefore do not qualify for hedge accounting treatment.
Fair Value Measurements	Fair Value Measurements - Fair value represents the estimated price at which an orderly transaction to sell an asset or transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept). Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using discounted cash flow or other valuation techniques. Inputs into the valuation methods are subjective in nature, involve uncertainties, and require significant judgment and therefore cannot be determined with precision. Accordingly, the derived fair value estimates presented herein are not necessarily indicative of the amounts HTLF could realize in a current market exchange. Assets and liabilities are categorized into three levels based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine the fair value. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy in which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. HTLF's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. Below is a brief description of each fair value level: Level 1 — Valuation is based upon quoted prices for identical instruments in active markets. Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.
Treasury Stock	Treasury Stock - Treasury stock is accounted for by the cost method, whereby shares of common stock reacquired are recorded at their purchase price. When treasury stock is reissued, any difference between the sales proceeds, or fair value when issued for business combinations, and the cost is recognized as a charge or credit to capital surplus. HTLF had no treasury stock at December 31, 2021 and December 31, 2020.
Trust Department Assets	Trust Department Assets - Property held for customers in fiduciary or agency capacities is not included in the accompanying consolidated balance sheets because such items are not assets of the HTLF banks.
Earnings Per Share	Earnings Per Share - Basic earnings per share is determined using net income available to common stockholders and weighted average common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average common shares and assumed incremental common shares issued.
Subsequent Events	Subsequent Events - HTLF has evaluated subsequent events that may require recognition or disclosure through the filing date of this Annual Report on Form 10-K with the SEC.
Effect of New Financial Accounting Standards	Effect of New Financial Accounting Standards ASU 2018-16 In October 2018, the FASB issued ASU 2018-16, "Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting." In the United States, eligible benchmark interest rates under Topic 815 are interest rates on direct Treasury obligations of the U.S. government, the London Interbank Offered Rate ("LIBOR") swap rate, and the Overnight Index Swap ("OIS") Rate based on the Fed Funds Effective Rate. When the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, in August 2017, it introduced the Securities Industry and Financial Markets Association ("SIFMA") Municipal Swap Rate as the fourth permissible U.S. benchmark rate. ASU 2018-16 adds the OIS rate based on the Secured Overnight Financing Rate ("SOFR") as a U.S. benchmark interest rate to facilitate the LIBOR to SOFR transition and provide sufficient lead time for entities to prepare for changes to interest rate risk hedging strategies for both risk management and hedge accounting purposes. ASU 2018-16 became effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years and the financial statement impact immediately upon adoption was immaterial. The future financial statement impact will depend on any new contracts entered into using new benchmark rates, as well as any existing contracts that are migrated from LIBOR to new benchmark interest rates. HTLF has a formal working group that is responsible for the planning, assessment and execution of the transition from LIBOR as an interest rate benchmark to term SOFR. Currently, HTLF has adjustable rate loans, several debt obligations and derivative instruments in place that reference LIBOR-based rates. HTLF's transition plan provided for the cessation in new contracts of the use of LIBOR as a reference rate by December 31, 2021. ASU 2019-12 In December 2019, the FASB issued ASU 2019-12, "Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes." ASU 2019-12 simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740 related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition for deferred tax liabilities for outside basis differences. ASU 2019-12 also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. HTLF adopted this ASU on January 1, 2021, as required, and the adoption did not have a material impact on its results of operations, financial position and liquidity. ASU 2020-04 In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform," which provides optional expedients and exceptions for applying GAAP to loan and lease agreements, derivative contracts, and other transactions affected by the anticipated transition away from LIBOR toward new interest rate benchmarks. For loan and lease agreements that are modified because of reference rate reform and that meet certain scope guidance (i) modifications of loan agreements should be accounted for by prospectively adjusting the effective interest rate, and the modifications would be considered "minor" with the result that any existing unamortized origination fees/costs would carry forward and continue to be amortized and (ii) modifications of lease agreements should be accounted for as a continuation of the existing agreement, with no reassessments of the lease classification and the discount rate or remeasurements of lease payments that otherwise would be required for modifications not accounted for as separate contracts. ASU 2020-04 also provides numerous optional expedients for derivative accounting. ASU 2020-04 is effective March 12, 2020 through December 31, 2022. An entity may elect to apply ASU 2020-04 for contract modifications as of January 1, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected for a Topic or an Industry Subtopic within the ASC, ASU 2020-04 must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. HTLF anticipates that ASU 2020-04 will simplify any modifications executed between the selected start date and December 31, 2022 that are directly related to LIBOR transition by allowing prospective recognition of the continuation of the contract, rather than extinguishment of the old contract that would result in writing off unamortized fees/costs. Management will continue to actively assess the impacts of ASU 2020-04 and the related opportunities and risks involved in the LIBOR transition.
Fair Value Hierarchy	Fair Value Hierarchy Under ASC 820, assets and liabilities are grouped at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are: Level 1 — Valuation is based upon quoted prices for identical instruments in active markets. Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. The following is a description of valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis. Assets Securities Available for Sale and Held to Maturity Securities available for sale are recorded at fair value on a recurring basis. Securities held to maturity are generally recorded at cost. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities. Level 2 securities include U.S. government and agency securities, mortgage and asset-backed securities and private collateralized mortgage obligations, municipal bonds, equity securities and corporate debt securities. On a quarterly basis, a secondary independent pricing service is used for the securities portfolio to validate the pricing from HTLF's primary pricing service. Equity Securities with a Readily Determinable Fair Value Equity securities with a readily determinable fair value generally include Community Reinvestment Act mutual funds and are classified as Level 2 due to the infrequent trading of these securities. The fair value is based on the price per share. Loans Held for Sale Loans held for sale are carried at the lower of cost or fair value on an aggregate basis. The fair value of loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, HTLF classifies loans held for sale subjected to nonrecurring fair value adjustments as Level 2. Loans Held to Maturity HTLF does not record loans held to maturity at fair value on a recurring basis. However, from time to time, certain loans are considered collateral dependent and an allowance for credit losses is established. The fair value of individually assessed loans is measured using the fair value of the collateral. In accordance with ASC 820, individually assessed loans measured at fair value are classified as nonrecurring Level 3 in the fair value hierarchy. Premises, Furniture and Equipment Held for Sale HTLF values premises, furniture and equipment held for sale based on third-party appraisals less estimated disposal costs. HTLF considers third party appraisals, as well as independent fair value assessments from Realtors or persons involved in selling bank premises, furniture and equipment, in determining the fair value of particular properties. Accordingly, the valuation of premises, furniture and equipment held for sale is subject to significant external and internal judgment. HTLF periodically reviews premises, furniture and equipment held for sale to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. Premises, furniture and equipment held for sale are classified as nonrecurring Level 3 in the fair value hierarchy. Mortgage Servicing Rights Mortgage servicing rights assets represent the value associated with servicing residential real estate loans that have been sold to outside investors with servicing retained. The fair value for servicing assets is determined through discounted cash flow analysis and utilizes discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Mortgage servicing rights are subject to impairment testing. The carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including note type and note term. If the valuation model reflects a value less than the carrying value, mortgage servicing rights are adjusted to fair value through a valuation allowance. HTLF classifies mortgage servicing rights as nonrecurring with Level 3 measurement inputs. Commercial Servicing Rights Commercial servicing rights assets represent the value associated with servicing commercial loans guaranteed by the Small Business Administration and United States Department of Agriculture that have been sold with servicing retained by HTLF. HTLF uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its commercial servicing rights. The fair value for servicing assets is determined through market prices for comparable servicing contracts, when available, or through a valuation model that calculates the present value of estimated future net servicing income. Inputs utilized include discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Commercial servicing rights are subject to impairment testing, and the carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. If the valuation model reflects a fair value less than the carrying value, commercial servicing rights are adjusted to fair value through a valuation allowance. HTLF classifies commercial servicing rights as nonrecurring with Level 3 measurement inputs. Derivative Financial Instruments HTLF's current interest rate risk strategy includes interest rate swaps. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. To comply with the provisions of ASC 820, HTLF incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, HTLF has considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. Although HTLF has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of December 31, 2021, and December 31, 2020, HTLF has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, HTLF has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. Interest Rate Lock Commitments HTLF uses an internal valuation model that relies on internally developed inputs to estimate the fair value of its interest rate lock commitments which is based on unobservable inputs that reflect management's assumptions and specific information about each borrower. Interest rate lock commitments are classified in Level 3 of the fair value hierarchy. Forward Commitments The fair value of forward commitments is estimated using an internal valuation model, which includes current trade pricing for similar financial instruments in active markets that HTLF has the ability to access and are classified in Level 2 of the fair value hierarchy. Other Real Estate Owned Other real estate owned ("OREO") represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the fair value of the property at the time of acquisition (representing the property's cost basis), plus any acquisition costs, or the estimated fair value of the property, less disposal costs. HTLF considers third party appraisals, as well as independent fair value assessments from realtors or persons involved in selling OREO, in determining the fair value of particular properties. Accordingly, the valuation of OREO is subject to significant external and internal judgment. HTLF periodically reviews OREO to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. OREO is classified as nonrecurring Level 3 of the fair value hierarchy.
Revenue	ASC 606, Revenue from Contracts with Customers, requires revenue to be recognized at an amount that reflects the consideration to which HTLF expects to be entitled in exchange for transferring goods or services to a customer. ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of HTLF's revenue streams including interest income, loan servicing income, net securities gain, net unrealized gains and losses on equity securities, net gains on sale of loans held for sale, valuation adjustment on servicing rights, income from bank owned life insurance and other noninterest income are outside the scope of ASC 606. Revenue streams including service charges and fees, interchange fees on credit and debit cards, trust fees and brokerage and insurance commissions are within the scope of ASC 606. Service Charges and Fees Service charges and fees consist of revenue generated from deposit account related service charges and fees, overdraft fees, customer service fees and other service charges, credit card fee income, debit card income and other service charges and fees. Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders and other deposit account related fees. HTLF's performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees, including overdraft fees, are largely transaction based, and therefore, the performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. Customer service fees and other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. HTLF's performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Credit card fee income and debit card income are comprised of interchange fees, ATM fees, and merchant services income. Credit card fee income and debit card income are earned whenever the banks' debit and credit cards are processed through card payment networks such as Visa. ATM fees are primarily generated when a bank cardholder uses an ATM that is not owned by one of HTLF's banks or a non-bank cardholder uses HTLF-owned ATM. Merchant services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees. Trust Fees Trust fees are primarily comprised of fees earned from the management and administration of trusts and other customer assets. HTLF's performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the average daily market value or month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days before or after month end through a direct charge to customers’ accounts. HTLF does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. HTLF's performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered. Brokerage and Insurance Commissions Brokerage commission primarily consist of commissions related to broker-dealer contracts. The contracts are between the customer and the broker-dealer, and HTLF satisfies its performance obligation and earns commission when the transactions are completed. The recognition of revenue is based on a defined fee schedule and does not require significant judgment. Payment is received shortly after services are rendered. Insurance commissions are related to commissions received directly from the insurance carrier. HTLF acts as an insurance agent between the customer and the insurance carrier. HTLF's performance obligations and associated fee and commission income are defined with each insurance product with the insurance company. When insurance payments are received from customers, a portion of the payment is recognized as commission revenue. Contract BalancesHTLF does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of December 31, 2021, 2020, and 2019, HTLF did not have any significant contract balances or capitalized contract acquisition costs.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

Amounts used in the determination of basic and diluted earnings per share for the years ended December 31, 2021, 2020 and 2019, are shown in the table below, dollars and number of shares in thousands, except per share data:


	2021		2020		2019
Net income attributable to HTLF	$	219,923	$	137,938	$	149,129
Preferred dividends	(8,050)		(4,451)		—

Net income available to common stockholders	$	211,873	$	133,487	$	149,129
Weighted average common shares outstanding for basic earnings per share	42,260		37,269		35,991
Assumed incremental common shares issued upon vesting of restricted stock units	151		88		71
Weighted average common shares for diluted earnings per share	42,411		37,357		36,062
Earnings per common share — basic	$	5.01	$	3.58	$	4.14
Earnings per common share — diluted	$	5.00	$	3.57	$	4.14
Number of antidilutive stock units excluded from diluted earnings per share computation	1		—		—

ACQUISITIONS (Tables)

12 Months Ended

Dec. 31, 2021

Business Combination and Asset Acquisition [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The assets and liabilities of AimBank were recorded on the consolidated balance sheet at the estimated fair value on the acquisition date. Loans classified as non-PCD were recorded on acquisition date at fair value based on a discounted cash flow valuation methodology that considers, among other things, projected default rates, loss given defaults and recovery rates.

The following table represents, in thousands, the amounts recorded on the consolidated balance sheet as of December 4, 2020:


	As of December 4, 2020
Fair value of consideration paid:
Common stock (5,185,045 shares)	$	217,202
Cash	47,275
Total consideration paid	264,477
Fair value of assets acquired
Cash and cash equivalents	470,085



Securities:
Carried at fair value	267,936

Other securities	3,210
Loans held to maturity	1,087,041
Allowance for credit losses for loans	(12,055)
Net loans held to maturity	1,074,986
Premises, furniture and equipment, net	27,867
Other real estate, net	1,119

Core deposit intangibles and customer relationships, net	3,102
Cash surrender value on life insurance	13,418
Other assets	20,159
Total assets	1,881,882
Fair value of liabilities assumed
Deposits	1,670,715
Short term borrowings	26,306

Other liabilities	11,807
Total liabilities assumed	1,708,828
Fair value of net assets acquired	173,054
Goodwill resulting from acquisition	$	91,423

SECURITIES (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Amortized Cost, Gross Unrealized Gains and Losses and Estimated Fair Value of Investment Securities

The amortized cost, gross unrealized gains and losses and estimated fair values of debt securities available for sale and equity securities with a readily determinable fair value as of December 31, 2021, and December 31, 2020, are summarized in the table below, in thousands:


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
December 31, 2021
U.S. treasuries	$	997	$	11	$	—	$	1,008
U.S. agencies	193,932		264		(812)		193,384
Obligations of states and political subdivisions	2,045,386		56,263		(16,616)		2,085,033
Mortgage-backed securities - agency	2,388,601		11,870		(51,182)		2,349,289
Mortgage-backed securities - non-agency	1,749,838		4,570		(11,029)		1,743,379
Commercial mortgage-backed securities - agency	125,397		1,429		(2,914)		123,912
Commercial mortgage-backed securities - non-agency	600,253		998		(363)		600,888
Asset-backed securities	408,167		2,803		(1,317)		409,653
Corporate bonds	2,979		61		—		3,040
Total debt securities	7,515,550		78,269		(84,233)		7,509,586
Equity securities with a readily determinable fair value	20,788		—		—		20,788
Total	$	7,536,338	$	78,269	$	(84,233)	$	7,530,374
December 31, 2020
U.S. treasuries	$	1,995	$	31	$	—	$	2,026
U.S. agencies	167,048		657		(926)		166,779
Obligations of states and political subdivisions	1,562,631		75,555		(2,959)		1,635,227
Mortgage-backed securities - agency	1,351,964		16,029		(12,723)		1,355,270
Mortgage-backed securities - non-agency	1,428,068		22,688		(1,640)		1,449,116
Commercial mortgage-backed securities - agency	171,451		3,440		(738)		174,153
Commercial mortgage-backed securities - non-agency	253,421		37		(691)		252,767
Asset-backed securities	1,064,255		9,421		(4,410)		1,069,266
Corporate bonds	3,763		8		(29)		3,742
Total debt securities	6,004,596		127,866		(24,116)		6,108,346
Equity securities	19,629		—		—		19,629
Total	$	6,024,225	$	127,866	$	(24,116)	$	6,127,975

The amortized cost and estimated fair value of investment securities carried at fair value at December 31, 2021, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.


	December 31, 2021
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	2,455	$	2,481
Due in 1 to 5 years	19,058		19,897
Due in 5 to 10 years	173,467		175,188
Due after 10 years	2,048,314		2,084,899
Total debt securities	2,243,294		2,282,465
Mortgage and asset-backed securities	5,272,256		5,227,121
Equity securities with a readily determinable fair value	20,788		20,788
Total investment securities	$	7,536,338	$	7,530,374

Schedule of Securities Held to Maturity

The amortized cost, gross unrealized gains and losses and estimated fair values of held to maturity securities as of December 31, 2021, and December 31, 2020, are summarized in the table below, in thousands:


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Allowance for Credit Losses
December 31, 2021

Obligations of states and political subdivisions	$	84,709	$	9,430	$	—	$	94,139	$	—
Total	$	84,709	$	9,430	$	—	$	94,139	$	—
December 31, 2020

Obligations of states and political subdivisions	$	88,890	$	11,151	$	—	$	100,041	$	(51)
Total	$	88,890	$	11,151	$	—	$	100,041	$	(51)

The amortized cost and estimated fair value of debt securities held to maturity at December 31, 2021, by contractual maturity are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.


	December 31, 2021
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	5,096	$	5,112
Due in 1 to 5 years	38,787		40,561
Due in 5 to 10 years	34,824		39,871
Due after 10 years	6,002		8,595


Total investment securities	$	84,709	$	94,139

Schedule of Realized Gross Gains and Losses on Sales of Securities Available for Sale

Gross gains and losses realized related to sales of securities carried at fair value for the years ended December 31, 2021, 2020 and 2019 are summarized as follows, in thousands:


	2021		2020		2019
Available for Sale Securities sold:
Proceeds from sales	$	1,475,598	$	1,097,378	$	1,628,467
Gross security gains	11,892		13,208		11,774
Gross security losses	5,982		5,616		4,115

Schedule of Available for Sale Securities

The following tables summarize, in thousands, the amount of unrealized losses, defined as the amount by which cost or amortized cost exceeds fair value, and the related fair value of investments with unrealized losses in HTLF's securities portfolio as of December 31, 2021, and December 31, 2020. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months. The reference point for determining how long an investment was in an unrealized loss position was December 31, 2021, and December 31, 2020, respectively.


Debt securities available for sale	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count	Fair Value		Unrealized Losses		Count
December 31, 2021

U.S. agencies	$	100,839	$	(812)	2	$	—	$	—	—	$	100,839	$	(812)	2
Obligations of states and political subdivisions	596,866		(10,115)		113	236,329		(6,501)		49	833,195		(16,616)		162
Mortgage-backed securities - agency	1,383,808		(33,291)		83	474,724		(17,891)		19	1,858,532		(51,182)		102
Mortgage-backed securities - non-agency	929,515		(10,870)		27	23,821		(159)		5	953,336		(11,029)		32
Commercial mortgage-backed securities - agency	26,999		(689)		8	53,025		(2,225)		5	80,024		(2,914)		13
Commercial mortgage-backed securities - non-agency	74,450		(145)		3	14,124		(218)		2	88,574		(363)		5
Asset-backed securities	113,945		(1,201)		6	13,799		(116)		6	127,744		(1,317)		12



Total temporarily impaired securities	$	3,226,422	$	(57,123)	242	$	815,822	$	(27,110)	86	$	4,042,244	$	(84,233)	328
December 31, 2020

U.S. agencies	$	2,981	$	(8)	5	$	99,922	$	(918)	72	$	102,903	$	(926)	77
Obligations of states and political subdivisions	346,598		(2,959)		49	—		—		—	346,598		(2,959)		49
Mortgage-backed securities - agency	653,793		(12,342)		35	31,012		(381)		3	684,805		(12,723)		38
Mortgage-backed securities - non-agency	378,843		(1,639)		17	1,622		(1)		1	380,465		(1,640)		18
Commercial mortgage-backed securities - agency	46,541		(738)		6	—		—		—	46,541		(738)		6
Commercial mortgage-backed securities - non-agency	100,042		(15)		2	35,428		(676)		3	135,470		(691)		5
Asset-backed securities	141,824		(643)		9	340,452		(3,767)		24	482,276		(4,410)		33
Corporate bonds	1,908		(29)		4	—		—		—	1,908		(29)		4


Total temporarily impaired securities	$	1,672,530	$	(18,373)	127	$	508,436	$	(5,743)	103	$	2,180,966	$	(24,116)	230

Schedule of Debt Securities, Held-to-maturity, Allowance for Credit Loss

The following table presents, in thousands, the activity in the allowance for credit losses for securities held to maturity by obligations of states and political subdivisions for the years ended December 31, 2021 and December 31, 2020:


	Year Ended December 31,
	2021		2020
Beginning balance	$	51	$	—
Impact of ASU 2016-13 adoption	—		158
Adjusted balance	51		158
Provision (benefit) for credit losses	(51)		(107)
Ending balance	$	—	$	51

Schedule of Financing Receivable Credit Quality Indicators

The following table summarizes, in thousands, the carrying amount of HTLF's held to maturity debt securities by investment rating as of December 31, 2021 and December 31, 2020, which are updated quarterly and used to monitor the credit quality of the securities:


	December 31, 2021		December 31, 2020
Rating
AAA	$	3,265	$	—
AA, AA+, AA-	61,471		64,385
A+, A, A-	15,034		18,353
BBB	4,939		4,208
Not Rated	—		1,944
Total	$	84,709	$	88,890

The following tables show the risk category of loans by loan category and year of origination as of December 31, 2021 and December 31, 2020, in thousands:


As of December 31, 2021	Amortized Cost Basis of Term Loans by Year of Origination
	2021		2020		2019		2018		2017		2016 and Prior		Revolving		Total
Commercial and industrial
Pass	$	604,659	$	359,533	$	203,960	$	89,694	$	171,709	$	330,094	$	708,525	$	2,468,174
Watch	10,633		12,790		12,550		8,210		3,611		14,976		24,626		87,396
Substandard	19,888		6,391		13,050		8,535		6,619		12,052		22,980		89,515
Commercial and industrial total	$	635,180	$	378,714	$	229,560	$	106,439	$	181,939	$	357,122	$	756,131	$	2,645,085
PPP
Pass	$	146,370	$	25,707	$	—	$	—	$	—	$	—	$	—	$	172,077
Watch	10,726		127		—		—		—		—		—		10,853
Substandard	16,932		21		—		—		—		—		—		16,953
PPP total	$	174,028	$	25,855	$	—	$	—	$	—	$	—	$	—	$	199,883
Owner occupied commercial real estate
Pass	$	940,043	$	328,052	$	315,497	$	180,936	$	115,142	$	189,647	$	34,233	$	2,103,550
Watch	4,676		13,956		7,759		10,501		15,032		6,830		35		58,789
Substandard	11,958		20,769		13,734		2,809		13,912		13,063		1,750		77,995
Owner occupied commercial real estate total	$	956,677	$	362,777	$	336,990	$	194,246	$	144,086	$	209,540	$	36,018	$	2,240,334
Non-owner occupied commercial real estate
Pass	$	609,968	$	263,093	$	315,815	$	236,823	$	152,059	$	166,792	$	28,728	$	1,773,278
Watch	4,754		9,109		35,496		29,227		4,865		35,901		—		119,352
Substandard	15,722		10,612		21,798		3,599		14,023		51,766		441		117,961
Non-owner occupied commercial real estate total	$	630,444	$	282,814	$	373,109	$	269,649	$	170,947	$	254,459	$	29,169	$	2,010,591
Real estate construction
Pass	$	381,283	$	206,879	$	169,606	$	14,197	$	7,163	$	7,823	$	14,507	$	801,458
Watch	2,704		858		2,145		44,846		—		—		14		50,567
Substandard	—		50		46		3,944		—		54		—		4,094
Real estate construction total	$	383,987	$	207,787	$	171,797	$	62,987	$	7,163	$	7,877	$	14,521	$	856,119
Agricultural and agricultural real estate
Pass	$	217,179	$	102,030	$	47,927	$	32,913	$	22,029	$	35,548	$	220,065	$	677,691
Watch	4,018		10,390		4,688		2,270		33		2,038		2,948		26,385
Substandard	9,250		1,095		4,910		15,825		3,212		8,859		6,526		49,677
Agricultural and agricultural real estate total	$	230,447	$	113,515	$	57,525	$	51,008	$	25,274	$	46,445	$	229,539	$	753,753
Residential real estate
Pass	$	311,292	$	86,355	$	50,762	$	53,773	$	43,619	$	230,566	$	29,017	$	805,384
Watch	3,928		1,499		750		1,452		734		1,977		1,000		11,340
Substandard	2,528		444		410		2,317		1,139		5,721		—		12,559
Residential real estate total	$	317,748	$	88,298	$	51,922	$	57,542	$	45,492	$	238,264	$	30,017	$	829,283
Consumer
Pass	$	69,172	$	20,258	$	13,051	$	9,001	$	10,986	$	18,202	$	271,034	$	411,704
Watch	555		309		392		373		113		591		2,210		4,543
Substandard	267		204		218		236		363		1,611		378		3,277
Consumer total	$	69,994	$	20,771	$	13,661	$	9,610	$	11,462	$	20,404	$	273,622	$	419,524

Total pass	$	3,279,966	$	1,391,907	$	1,116,618	$	617,337	$	522,707	$	978,672	$	1,306,109	$	9,213,316
Total watch	41,994		49,038		63,780		96,879		24,388		62,313		30,833		369,225
Total substandard	76,545		39,586		54,166		37,265		39,268		93,126		32,075		372,031
Total loans	$	3,398,505	$	1,480,531	$	1,234,564	$	751,481	$	586,363	$	1,134,111	$	1,369,017	$	9,954,572


As of December 31, 2020	Amortized Cost Basis of Term Loans by Year of Origination
	2020		2019		2018		2017		2016		2015 and Prior		Revolving		Total
Commercial and industrial
Pass	$	557,853	$	340,809	$	168,873	$	215,696	$	101,010	$	337,834	$	541,627	$	2,263,702
Watch	41,574		24,676		19,672		14,262		8,072		2,474		49,432		160,162
Substandard	23,024		16,274		8,897		15,717		9,098		19,537		18,388		110,935
Commercial and industrial total	$	622,451	$	381,759	$	197,442	$	245,675	$	118,180	$	359,845	$	609,447	$	2,534,799
PPP
Pass	$	880,709	$	—	$	—	$	—	$	—	$	—	$	—	$	880,709
Watch	22,533		—		—		—		—		—		—		22,533
Substandard	54,543		—		—		—		—		—		—		54,543
PPP total	$	957,785	$	—	$	—	$	—	$	—	$	—	$	—	$	957,785
Owner occupied commercial real estate
Pass	$	400,662	$	369,401	$	300,242	$	167,470	$	107,234	$	213,780	$	33,759	$	1,592,548
Watch	15,345		13,764		22,488		20,811		8,717		15,282		4,311		100,718
Substandard	15,914		9,522		12,164		14,147		8,580		21,708		1,105		83,140
Owner occupied commercial real estate total	$	431,921	$	392,687	$	334,894	$	202,428	$	124,531	$	250,770	$	39,175	$	1,776,406
Non-owner occupied commercial real estate
Pass	$	334,722	$	411,301	$	305,456	$	194,101	$	108,070	$	233,153	$	24,466	$	1,611,269
Watch	22,826		55,225		24,718		18,724		20,954		45,672		5,114		193,233
Substandard	30,899		15,035		23,290		17,046		9,147		21,060		502		116,979
Non-owner occupied commercial real estate total	$	388,447	$	481,561	$	353,464	$	229,871	$	138,171	$	299,885	$	30,082	$	1,921,481
Real estate construction
Pass	$	311,625	$	309,678	$	157,171	$	12,625	$	6,954	$	5,110	$	21,431	$	824,594
Watch	2,105		26,659		2,403		332		55		388		1,295		33,237
Substandard	196		2,760		2,036		—		39		358		—		5,389
Real estate construction total	$	313,926	$	339,097	$	161,610	$	12,957	$	7,048	$	5,856	$	22,726	$	863,220
Agricultural and agricultural real estate
Pass	$	171,578	$	90,944	$	62,349	$	39,252	$	17,626	$	37,696	$	148,456	$	567,901
Watch	20,500		16,202		8,854		2,448		3,515		3,157		12,282		66,958
Substandard	17,403		7,044		23,519		6,758		3,917		9,952		11,074		79,667
Agricultural and agricultural real estate total	$	209,481	$	114,190	$	94,722	$	48,458	$	25,058	$	50,805	$	171,812	$	714,526
Residential real estate
Pass	$	153,017	$	99,440	$	118,854	$	83,534	$	63,477	$	244,852	$	33,467	$	796,641
Watch	3,986		4,507		2,188		1,896		3,117		8,525		—		24,219
Substandard	980		442		2,507		1,528		884		12,141		1,100		19,582
Residential real estate total	$	157,983	$	104,389	$	123,549	$	86,958	$	67,478	$	265,518	$	34,567	$	840,442
Consumer
Pass	$	37,037	$	27,646	$	18,811	$	15,034	$	4,009	$	19,483	$	280,996	$	403,016
Watch	168		352		647		340		82		646		1,622		3,857
Substandard	481		959		1,884		500		897		1,976		822		7,519
Consumer total	$	37,686	$	28,957	$	21,342	$	15,874	$	4,988	$	22,105	$	283,440	$	414,392

Total pass	$	2,847,203	$	1,649,219	$	1,131,756	$	727,712	$	408,380	$	1,091,908	$	1,084,202	$	8,940,380
Total watch	129,037		141,385		80,970		58,813		44,512		76,144		74,056		604,917
Total substandard	143,440		52,036		74,297		55,696		32,562		86,732		32,991		477,754
Total loans	$	3,119,680	$	1,842,640	$	1,287,023	$	842,221	$	485,454	$	1,254,784	$	1,191,249	$	10,023,051

LOANS (Tables)

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

Schedule of Loans and Leases

Loans as of December 31, 2021, and December 31, 2020, were as follows, in thousands:


	December 31, 2021		December 31, 2020
Loans receivable held to maturity:
Commercial and industrial	$	2,645,085	$	2,534,799
Paycheck Protection Program ("PPP")	199,883		957,785
Owner occupied commercial real estate	2,240,334		1,776,406
Non-owner occupied commercial real estate	2,010,591		1,921,481
Real estate construction	856,119		863,220
Agricultural and agricultural real estate	753,753		714,526
Residential real estate	829,283		840,442
Consumer	419,524		414,392


Total loans receivable held to maturity	9,954,572		10,023,051






Allowance for credit losses	(110,088)		(131,606)
Loans receivable, net	$	9,844,484	$	9,891,445


	Allowance For Credit Losses						Gross Loans Receivable Held to Maturity
	Individually Evaluated for Credit Losses		Collectively Evaluated for Credit Losses		Total		Loans Individually Evaluated for Credit Losses		Loans Collectively Evaluated for Credit Losses		Total
December 31, 2021
Commercial and industrial	$	4,562	$	23,176	$	27,738	$	13,551	$	2,631,534	$	2,645,085
PPP	—		—		—		—		199,883		199,883
Owner occupied commercial real estate	105		19,109		19,214		8,552		2,231,782		2,240,334
Non-owner occupied commercial real estate	610		17,298		17,908		12,557		1,998,034		2,010,591
Real estate construction	—		22,538		22,538		—		856,119		856,119
Agricultural and agricultural real estate	2,369		2,844		5,213		13,773		739,980		753,753
Residential real estate	—		8,427		8,427		855		828,428		829,283
Consumer	—		9,050		9,050		—		419,524		419,524

Total	$	7,646	$	102,442	$	110,088	$	49,288	$	9,905,284	$	9,954,572


	Allowance For Credit Losses						Gross Loans Receivable Held to Maturity
	Individually Evaluated for Credit Losses		Collectively Evaluated for Credit Losses		Total		Loans Individually Evaluated for Credit Losses		Loans Collectively Evaluated for Credit Losses		Total

December 31, 2020
Commercial and industrial	$	4,077	$	34,741	$	38,818	$	16,578	$	2,518,221	$	2,534,799
PPP	—		—		—		—		957,785		957,785
Owner occupied commercial real estate	111		19,890		20,001		11,174		1,765,232		1,776,406
Non-owner occupied commercial real estate	3,250		17,623		20,873		13,490		1,907,991		1,921,481
Real estate construction	—		20,080		20,080		—		863,220		863,220
Agricultural and agricultural real estate	1,988		5,141		7,129		15,453		699,073		714,526
Residential real estate	—		11,935		11,935		535		839,907		840,442
Consumer	—		12,770		12,770		—		414,392		414,392

Total	$	9,426	$	122,180	$	131,606	$	57,230	$	9,965,821	$	10,023,051

Schedule of Troubled Debt Restructured Loans Modified

The following table provides information on troubled debt restructured loans that were modified during the years ended December 31, 2021, and December 31, 2020, in thousands:


	For the Years Ended
	December 31, 2021					December 31, 2020
	Number of Loans	Pre-Modification Recorded Investment		Post-Modification Recorded Investment		Number of Loans	Pre-Modification Recorded Investment		Post-Modification Recorded Investment
Commercial and industrial	—	$	—	$	—	1	$	20	$	20
PPP	—	—		—		—	—		—
Owner occupied commercial real estate	—	—		—		—	—		—
Non-owner occupied commercial real estate	2	7,850		7,850		—	—		—
Real estate construction	—	—		—		—	—		—
Agricultural and agricultural real estate	—	—		—		—	—		—
Residential real estate	—	—		—		2	92		98
Consumer	—	—		—		—	—		—
Total	2	$	7,850	$	7,850	3	$	112	$	118

Schedule of Troubled Debt Restructured Loans with Payment Default

The following table provides information on troubled debt restructured loans for which there was a payment default during the years ended December 31, 2021, and December 31, 2020, in thousands, that had been modified during the 12-month period prior to the default:


	With Payment Defaults During the Following Periods
	For the Years Ended
	December 31, 2021			December 31, 2020
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial and industrial	—	$	—	—	$	—
PPP	—	—		—	—
Owner occupied commercial real estate	—	—		—	—
Non-owner occupied commercial real estate	—	—		—	—
Real estate construction	—	—		—	—
Agricultural and agricultural real estate	—	—		—	—
Residential real estate	—	—		1	232
Consumer	—	—		—	—
Total	—	$	—	1	$	232

Schedule of Financing Receivable Credit Quality Indicators

The following table summarizes, in thousands, the carrying amount of HTLF's held to maturity debt securities by investment rating as of December 31, 2021 and December 31, 2020, which are updated quarterly and used to monitor the credit quality of the securities:


	December 31, 2021		December 31, 2020
Rating
AAA	$	3,265	$	—
AA, AA+, AA-	61,471		64,385
A+, A, A-	15,034		18,353
BBB	4,939		4,208
Not Rated	—		1,944
Total	$	84,709	$	88,890

The following tables show the risk category of loans by loan category and year of origination as of December 31, 2021 and December 31, 2020, in thousands:


As of December 31, 2021	Amortized Cost Basis of Term Loans by Year of Origination
	2021		2020		2019		2018		2017		2016 and Prior		Revolving		Total
Commercial and industrial
Pass	$	604,659	$	359,533	$	203,960	$	89,694	$	171,709	$	330,094	$	708,525	$	2,468,174
Watch	10,633		12,790		12,550		8,210		3,611		14,976		24,626		87,396
Substandard	19,888		6,391		13,050		8,535		6,619		12,052		22,980		89,515
Commercial and industrial total	$	635,180	$	378,714	$	229,560	$	106,439	$	181,939	$	357,122	$	756,131	$	2,645,085
PPP
Pass	$	146,370	$	25,707	$	—	$	—	$	—	$	—	$	—	$	172,077
Watch	10,726		127		—		—		—		—		—		10,853
Substandard	16,932		21		—		—		—		—		—		16,953
PPP total	$	174,028	$	25,855	$	—	$	—	$	—	$	—	$	—	$	199,883
Owner occupied commercial real estate
Pass	$	940,043	$	328,052	$	315,497	$	180,936	$	115,142	$	189,647	$	34,233	$	2,103,550
Watch	4,676		13,956		7,759		10,501		15,032		6,830		35		58,789
Substandard	11,958		20,769		13,734		2,809		13,912		13,063		1,750		77,995
Owner occupied commercial real estate total	$	956,677	$	362,777	$	336,990	$	194,246	$	144,086	$	209,540	$	36,018	$	2,240,334
Non-owner occupied commercial real estate
Pass	$	609,968	$	263,093	$	315,815	$	236,823	$	152,059	$	166,792	$	28,728	$	1,773,278
Watch	4,754		9,109		35,496		29,227		4,865		35,901		—		119,352
Substandard	15,722		10,612		21,798		3,599		14,023		51,766		441		117,961
Non-owner occupied commercial real estate total	$	630,444	$	282,814	$	373,109	$	269,649	$	170,947	$	254,459	$	29,169	$	2,010,591
Real estate construction
Pass	$	381,283	$	206,879	$	169,606	$	14,197	$	7,163	$	7,823	$	14,507	$	801,458
Watch	2,704		858		2,145		44,846		—		—		14		50,567
Substandard	—		50		46		3,944		—		54		—		4,094
Real estate construction total	$	383,987	$	207,787	$	171,797	$	62,987	$	7,163	$	7,877	$	14,521	$	856,119
Agricultural and agricultural real estate
Pass	$	217,179	$	102,030	$	47,927	$	32,913	$	22,029	$	35,548	$	220,065	$	677,691
Watch	4,018		10,390		4,688		2,270		33		2,038		2,948		26,385
Substandard	9,250		1,095		4,910		15,825		3,212		8,859		6,526		49,677
Agricultural and agricultural real estate total	$	230,447	$	113,515	$	57,525	$	51,008	$	25,274	$	46,445	$	229,539	$	753,753
Residential real estate
Pass	$	311,292	$	86,355	$	50,762	$	53,773	$	43,619	$	230,566	$	29,017	$	805,384
Watch	3,928		1,499		750		1,452		734		1,977		1,000		11,340
Substandard	2,528		444		410		2,317		1,139		5,721		—		12,559
Residential real estate total	$	317,748	$	88,298	$	51,922	$	57,542	$	45,492	$	238,264	$	30,017	$	829,283
Consumer
Pass	$	69,172	$	20,258	$	13,051	$	9,001	$	10,986	$	18,202	$	271,034	$	411,704
Watch	555		309		392		373		113		591		2,210		4,543
Substandard	267		204		218		236		363		1,611		378		3,277
Consumer total	$	69,994	$	20,771	$	13,661	$	9,610	$	11,462	$	20,404	$	273,622	$	419,524

Total pass	$	3,279,966	$	1,391,907	$	1,116,618	$	617,337	$	522,707	$	978,672	$	1,306,109	$	9,213,316
Total watch	41,994		49,038		63,780		96,879		24,388		62,313		30,833		369,225
Total substandard	76,545		39,586		54,166		37,265		39,268		93,126		32,075		372,031
Total loans	$	3,398,505	$	1,480,531	$	1,234,564	$	751,481	$	586,363	$	1,134,111	$	1,369,017	$	9,954,572


As of December 31, 2020	Amortized Cost Basis of Term Loans by Year of Origination
	2020		2019		2018		2017		2016		2015 and Prior		Revolving		Total
Commercial and industrial
Pass	$	557,853	$	340,809	$	168,873	$	215,696	$	101,010	$	337,834	$	541,627	$	2,263,702
Watch	41,574		24,676		19,672		14,262		8,072		2,474		49,432		160,162
Substandard	23,024		16,274		8,897		15,717		9,098		19,537		18,388		110,935
Commercial and industrial total	$	622,451	$	381,759	$	197,442	$	245,675	$	118,180	$	359,845	$	609,447	$	2,534,799
PPP
Pass	$	880,709	$	—	$	—	$	—	$	—	$	—	$	—	$	880,709
Watch	22,533		—		—		—		—		—		—		22,533
Substandard	54,543		—		—		—		—		—		—		54,543
PPP total	$	957,785	$	—	$	—	$	—	$	—	$	—	$	—	$	957,785
Owner occupied commercial real estate
Pass	$	400,662	$	369,401	$	300,242	$	167,470	$	107,234	$	213,780	$	33,759	$	1,592,548
Watch	15,345		13,764		22,488		20,811		8,717		15,282		4,311		100,718
Substandard	15,914		9,522		12,164		14,147		8,580		21,708		1,105		83,140
Owner occupied commercial real estate total	$	431,921	$	392,687	$	334,894	$	202,428	$	124,531	$	250,770	$	39,175	$	1,776,406
Non-owner occupied commercial real estate
Pass	$	334,722	$	411,301	$	305,456	$	194,101	$	108,070	$	233,153	$	24,466	$	1,611,269
Watch	22,826		55,225		24,718		18,724		20,954		45,672		5,114		193,233
Substandard	30,899		15,035		23,290		17,046		9,147		21,060		502		116,979
Non-owner occupied commercial real estate total	$	388,447	$	481,561	$	353,464	$	229,871	$	138,171	$	299,885	$	30,082	$	1,921,481
Real estate construction
Pass	$	311,625	$	309,678	$	157,171	$	12,625	$	6,954	$	5,110	$	21,431	$	824,594
Watch	2,105		26,659		2,403		332		55		388		1,295		33,237
Substandard	196		2,760		2,036		—		39		358		—		5,389
Real estate construction total	$	313,926	$	339,097	$	161,610	$	12,957	$	7,048	$	5,856	$	22,726	$	863,220
Agricultural and agricultural real estate
Pass	$	171,578	$	90,944	$	62,349	$	39,252	$	17,626	$	37,696	$	148,456	$	567,901
Watch	20,500		16,202		8,854		2,448		3,515		3,157		12,282		66,958
Substandard	17,403		7,044		23,519		6,758		3,917		9,952		11,074		79,667
Agricultural and agricultural real estate total	$	209,481	$	114,190	$	94,722	$	48,458	$	25,058	$	50,805	$	171,812	$	714,526
Residential real estate
Pass	$	153,017	$	99,440	$	118,854	$	83,534	$	63,477	$	244,852	$	33,467	$	796,641
Watch	3,986		4,507		2,188		1,896		3,117		8,525		—		24,219
Substandard	980		442		2,507		1,528		884		12,141		1,100		19,582
Residential real estate total	$	157,983	$	104,389	$	123,549	$	86,958	$	67,478	$	265,518	$	34,567	$	840,442
Consumer
Pass	$	37,037	$	27,646	$	18,811	$	15,034	$	4,009	$	19,483	$	280,996	$	403,016
Watch	168		352		647		340		82		646		1,622		3,857
Substandard	481		959		1,884		500		897		1,976		822		7,519
Consumer total	$	37,686	$	28,957	$	21,342	$	15,874	$	4,988	$	22,105	$	283,440	$	414,392

Total pass	$	2,847,203	$	1,649,219	$	1,131,756	$	727,712	$	408,380	$	1,091,908	$	1,084,202	$	8,940,380
Total watch	129,037		141,385		80,970		58,813		44,512		76,144		74,056		604,917
Total substandard	143,440		52,036		74,297		55,696		32,562		86,732		32,991		477,754
Total loans	$	3,119,680	$	1,842,640	$	1,287,023	$	842,221	$	485,454	$	1,254,784	$	1,191,249	$	10,023,051

Schedule of Accruing and Nonaccrual Loans and Leases Not Covered by Loss Share Agreements

The following table sets forth information regarding HTLF's accruing and nonaccrual loans at December 31, 2021, and December 31, 2020, in thousands:


	Accruing Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Nonaccrual		Total Loans
December 31, 2021
Commercial and industrial	$	1,024	$	183	$	541	$	1,748	$	2,625,109	$	18,228	$	2,645,085
PPP	—		—		—		—		199,883		—		199,883
Owner occupied commercial real estate	130		—		—		130		2,229,054		11,150		2,240,334
Non-owner occupied commercial real estate	3,929		—		—		3,929		1,993,346		13,316		2,010,591
Real estate construction	238		50		—		288		855,463		368		856,119
Agricultural and agricultural real estate	687		—		—		687		737,380		15,686		753,753
Residential real estate	767		46		9		822		819,294		9,167		829,283
Consumer	251		57		—		308		417,762		1,454		419,524

Total loans receivable held to maturity	$	7,026	$	336	$	550	$	7,912	$	9,877,291	$	69,369	$	9,954,572


December 31, 2020
Commercial and industrial	$	5,825	$	2,322	$	720	$	8,867	$	2,504,170	$	21,762	$	2,534,799
PPP	1		—		—		1		957,784		—		957,785
Owner occupied commercial real estate	2,815		167		—		2,982		1,759,649		13,775		1,776,406
Non-owner occupied commercial real estate	2,143		2,674		—		4,817		1,902,003		14,661		1,921,481
Real estate construction	2,446		96		—		2,542		859,784		894		863,220
Agricultural and agricultural real estate	1,688		—		—		1,688		694,150		18,688		714,526
Residential real estate	1,675		83		—		1,758		825,047		13,637		840,442
Consumer	807		139		—		946		409,477		3,969		414,392

Total loans receivable held to maturity	$	17,400	$	5,481	$	720	$	23,601	$	9,912,064	$	87,386	$	10,023,051

Schedule of Financing Receivables Purchased with Credit Deterioration

The following table sets forth information regarding the PCD loans acquired during 2020 as of the date of acquisition, in thousands:


	Purchase Price		Allowance for Credit Losses		Premium/ (Discount)		Book Value
Commercial and industrial	$	81,917	$	(1,707)	$	170	$	80,380
PPP	—		—		—		—
Owner occupied commercial real estate	74,854		(1,205)		(56)		73,593
Non-owner occupied commercial real estate	134,135		(6,465)		(3,150)		124,520
Real estate construction	19,405		(603)		360		19,162
Agricultural and agricultural real estate	54,584		(1,848)		(413)		52,323
Residential real estate	25,556		(410)		94		25,240
Consumer	2,760		(75)		17		2,702
Total PCD loans	$	393,211	$	(12,313)	$	(2,978)	$	377,920

Summary of Changes in Related Party Loans

Changes in such loans during the years ended December 31, 2021 and 2020, were as follows, in thousands:


	2021		2020
Balance at beginning of year	$	215,449	$	184,568
Advances	69,204		73,412
Repayments	(90,776)		(42,531)
Balance at end of year	$	193,877	$	215,449

ALLOWANCE FOR CREDIT LOSSES (Tables)

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

Changes in Allowance for Credit Losses

Changes in the allowance for credit losses for loans for the years ended December 31, 2021, 2020 and 2019 were as follows, in thousands:


	2021		2020		2019
Balance at beginning of year	$	131,606	$	70,395	$	61,963
Impact of the adoption of ASU 2016-13 on January 1, 2020	—		12,071		—
Adjusted balance at January 1, 2020	131,606		82,466		61,963
Allowance for purchased credit deteriorated loans	—		12,313		—
Provision (benefit) for credit losses	(17,706)		65,745		16,657
Recoveries on loans previously charged-off	4,931		3,804		5,365
Charge-offs on loans	(8,743)		(32,722)		(13,590)
Balance at end of year	$	110,088	$	131,606	$	70,395

Changes in the allowance for credit losses for loans by loan category for the years ended December 31, 2021, and December 31, 2020, were as follows, in thousands:


	Balance at 12/31/2020		Charge-offs		Recoveries		Provision (Benefit)		Balance at 12/31/2021
Commercial and industrial	$	38,818	$	(2,150)	$	3,058	$	(11,988)	$	27,738

Owner occupied commercial real estate	20,001		(296)		152		(643)		19,214
Non-owner occupied commercial real estate	20,873		(1,637)		33		(1,361)		17,908
Real estate construction	20,080		(10)		10		2,458		22,538
Agricultural and agricultural real estate	7,129		(1,902)		531		(545)		5,213
Residential real estate	11,935		(181)		13		(3,340)		8,427
Consumer	12,770		(2,567)		1,134		(2,287)		9,050
Total	$	131,606	$	(8,743)	$	4,931	$	(17,706)	$	110,088


	Balance at 12/31/2019		Impact of ASU 2016-13 adoption on 1/1/2020		Adjusted balance at 1/1/2020		Purchased Credit Deteriorated Allowance		Charge-offs		Recoveries		Provision (Benefit)		Balance at 12/31/2020
Commercial and industrial	$	34,207	(272)		$	33,935	1,707		(14,974)		$	1,277	$	16,873	$	38,818

Owner occupied commercial real estate	7,921		(114)		7,807		1,205		(13,671)		205		24,455		20,001
Non-owner occupied commercial real estate	7,584		(2,617)		4,967		6,465		(45)		30		9,456		20,873
Real estate construction	8,677		6,335		15,012		603		(105)		220		4,350		20,080
Agricultural and agricultural real estate	5,680		(387)		5,293		1,848		(1,201)		971		218		7,129
Residential real estate	1,504		4,817		6,321		410		(515)		108		5,611		11,935
Consumer	4,822		4,309		9,131		75		(2,211)		993		4,782		12,770
Total	$	70,395	$	12,071	$	82,466	$	12,313	$	(32,722)	$	3,804	$	65,745	$	131,606

Changes in the allowance for credit losses on unfunded commitments for the years ended December 31, 2021 and December 31, 2020, were as follows:


	For the Years Ended December 31,
	2021		2020
Beginning balance	$	15,280	$	248
Impact of ASU 2016-13 adoption on January 1, 2020	—		13,604
Adjusted balance	15,280		13,852
Provision (benefit)	182		1,428
Ending balance	$	15,462	$	15,280

PREMISES, FURNITURE AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Schedule of Premises, Furniture and Equipment

Premises, furniture and equipment, excluding those held for sale, as of December 31, 2021, and December 31, 2020, were as follows, in thousands:


	2021		2020
Land and land improvements	$	59,195	$	61,930
Buildings and building improvements	177,296		192,702
Furniture and equipment	73,091		69,468
Total	309,582		324,100
Less accumulated depreciation	(104,583)		(104,505)
Premises, furniture and equipment, net	$	204,999	$	219,595

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets

The gross carrying amount of other intangible assets and the associated accumulated amortization at December 31, 2021, and December 31, 2020, are presented in the table below, in thousands:


	December 31, 2021						December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	101,185	$	68,330	$	32,855	$	101,185	$	58,970	$	42,215
Customer relationship intangible	1,177		1,044		133		1,177		1,009		168
Mortgage servicing rights	12,790		6,378		6,412		11,268		6,079		5,189
Commercial servicing rights	7,054		6,576		478		7,054		6,191		863
Total	$	122,206	$	82,328	$	39,878	$	120,684	$	72,249	$	48,435

Schedule of Estimated Future Amortization Expense of Amortizable Intangible Assets

The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:


	Core Deposit Intangibles		Customer Relationship Intangible		Mortgage Servicing Rights		Commercial Servicing Rights		Total
Year ending December 31,
2022	$	7,702	$	34	$	1,603	$	171	$	9,510
2023	6,739		34		1,374		126		8,273
2024	5,591		33		1,145		86		6,855
2025	4,700		32		916		95		5,743
2026	8,123		—		687		—		8,810
Thereafter	—		—		687		—		687
Total	$	32,855	$	133	$	6,412	$	478	$	39,878

Summary of Changes in Servicing Rights

The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the twelve months ended December 31, 2021, and December 31, 2020:


	2021			2020
Balance at January 1,	$	5,189		$	5,621
Originations	1,522			3,383
Amortization	(1,387)			(2,037)


Valuation adjustment	1,088			(1,778)
Balance at December 31,	$	6,412		$	5,189
Fair value of mortgage servicing rights	$	6,412		$	5,189
Mortgage servicing rights, net to servicing portfolio	0.89		%	0.70		%

The following table summarizes, in thousands, the changes in capitalized commercial servicing rights for the twelve months ended December 31, 2021, and December 31, 2020:


	2021			2020
Balance at January 1,	$	863		$	1,115
Originations	—			102
Amortization	(385)			(354)


Balance at December 31,	$	478		$	863
Fair value of commercial servicing rights	$	782		$	1,288
Commercial servicing rights, net to servicing portfolio	1.05		%	1.30		%

Schedule of Servicing Asset at Fair Value and Amortized Cost

The following table summarizes, in thousands, the book value, the fair value of each tranche of the mortgage servicing rights and any recorded valuation allowance at December 31, 2021, and December 31, 2020:


	Book Value 15-Year Tranche		Fair Value 15-Year Tranche		Valuation Allowance 15-Year Tranche		Book Value 30-Year Tranche		Fair Value 30-Year Tranche		Valuation Allowance 30-Year Tranche


December 31, 2021	$	1,607	$	1,280	$	327	$	6,463	$	5,132	$	1,331



December 31, 2020	$	1,522	$	1,100	$	422	$	5,445	$	4,089	$	1,356

The following table summarizes, in thousands, the book value, the fair value of each tranche of the commercial servicing rights at December 31, 2021, and December 31, 2020:


	Book Value- Less than 20 Years		Fair Value- Less than 20 Years		Book Value- More than 20 Years		Fair Value- More than 20 Years




December 31, 2021	$	45	$	98	$	433	$	684




December 31, 2020	$	87	$	203	$	776	$	1,085

DEPOSITS (Tables)

12 Months Ended

Dec. 31, 2021

Deposits [Abstract]

Schedule of Maturities of Time Certificates of Deposit

At December 31, 2021, the scheduled maturities of time certificates of deposit were as follows, in thousands:


2022	$	795,813
2023	146,326
2024	39,435
2025	17,490
2026	15,458
Thereafter	9,498
Total	$	1,024,020

Schedule of Interest Expense on Deposits

Interest expense on deposits for the years ended December 31, 2021, 2020, and 2019, was as follows, in thousands:


	2021		2020		2019
Savings and money market accounts	$	9,063	$	16,560	$	47,069
Time certificates of deposit in denominations of $100,000 or more	3,463		8,244		9,344
Other time deposits	2,271		5,483		7,321
Interest expense on deposits	$	14,797	$	30,287	$	63,734

SHORT-TERM BORROWINGS (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Short-term Borrowings

Short-term borrowings, which HTLF defines as borrowings with an original maturity of one year or less, as of December 31, 2021, and 2020, were as follows, in thousands:


	2021		2020
Retail repurchase agreements	$	122,996	$	118,293
Federal funds purchased	—		2,100

Advances from the federal discount window	—		35,000
Other short-term borrowings	8,601		12,479
Total	$	131,597	$	167,872

Average and maximum balances and rates on aggregate short-term borrowings outstanding during the years ended December 31, 2021, December 31, 2020 and December 31, 2019, were as follows, in thousands:


	2021			2020			2019
Maximum month-end balance	$	299,457		$	380,360		$	226,096
Average month-end balance	173,556			157,348			128,098
Weighted average interest rate for the year	0.26		%	0.39		%	1.38		%
Weighted average interest rate at year-end	0.19		%	0.18		%	1.21		%

OTHER BORROWINGS (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Other Borrowings

Other borrowings, which HTLF defines as borrowings with an original maturity date of more than one year, outstanding at December 31, 2021 and 2020, are shown in the table below, net of unamortized discount and issuance costs, in thousands:


	2021		2020
Advances from the FHLB; weighted average interest rates were 3.03% at both December 31, 2021 and 2020, respectively	$	898	$	1,018
Paycheck Protection Program Liquidity Fund	—		188,872
Trust preferred securities	147,316		146,323

Note payable to unaffiliated bank	—		44,417
Contracts payable for purchase of real estate and other assets	1,593		1,983
Subordinated notes	222,265		74,429

Total	$	372,072	$	457,042

Schedule of Trust Preferred Offerings Outstanding

A schedule of HTLF’s trust preferred offerings outstanding, as of December 31, 2021, were as follows, in thousands:

Amount

Issued

Interest

Rate

Interest Rate as
of 12/31/21

Maturity

Date

Callable

Date

Heartland Financial Statutory Trust IV

$

10,310

2.75% over LIBOR

2.97%

03/17/2034

03/17/2022

Heartland Financial Statutory Trust V

20,619

1.33% over LIBOR

1.45%

04/07/2036

04/07/2022

Heartland Financial Statutory Trust VI

20,619

1.48% over LIBOR

1.68%

09/15/2037

03/15/2022

Heartland Financial Statutory Trust VII

18,042

1.48% over LIBOR

1.65%

09/01/2037

03/01/2022

Morrill Statutory Trust I

9,276

3.25% over LIBOR

3.47%

12/26/2032

03/26/2022

Morrill Statutory Trust II

8,976

2.85% over LIBOR

3.07%

12/17/2033

03/17/2022

Sheboygan Statutory Trust I

6,703

2.95% over LIBOR

3.17%

09/17/2033

03/17/2022

CBNM Capital Trust I

4,508

3.25% over LIBOR

3.45%

12/15/2034

03/15/2022

Citywide Capital Trust III

6,549

2.80% over LIBOR

2.93%

12/19/2033

04/23/2022

Citywide Capital Trust IV

4,411

2.20% over LIBOR

2.36%

09/30/2034

05/23/2022

Citywide Capital Trust V

12,198

1.54% over LIBOR

1.74%

07/25/2036

03/15/2022

OCGI Statutory Trust III

3,012

3.65% over LIBOR

3.89%

09/30/2032

03/30/2022

OCGI Capital Trust IV

5,455

2.50% over LIBOR

2.70%

12/15/2034

03/15/2022

BVBC Capital Trust II

7,278

3.25% over LIBOR

3.38%

04/24/2033

04/24/2022

BVBC Capital Trust III

9,404

1.60% over LIBOR

1.82%

09/30/2035

03/30/2022

Total trust preferred offerings

147,360

Less: deferred issuance costs

(44)

$

147,316

Schedule of Future Payments of Other Borrowings

Future payments, net of unamortized discount and issuance costs, at December 31, 2021, for other borrowings at their maturity date follow in the table below, in thousands.


2022	$	2
2023	80
2024	74,572
2025	—
2026	—
Thereafter	297,418
Total	$	372,072

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28541-108399

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21506-112644

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69B
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69E
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21521-112644

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21538-112644

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

+ Details

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Balance Sheet Category and Fair Value of Derivative Instruments Designated as Cash Flow Hedges

The table below identifies the balance sheet category and fair values of HTLF's derivative instruments designated as cash flow hedges at December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category	Receive Rate		Weighted Average Pay Rate		Maturity













December 31, 2020
Interest rate swap	$	25,000	$	(127)	Other Liabilities	0.229	%	2.255	%	03/17/2021

Interest rate swap	21,667		(91)		Other Liabilities	2.649		3.674		05/10/2021
Interest rate swap	22,750		(2,220)		Other Liabilities	2.643		5.425		07/24/2028
Interest rate swap	20,000		(1,482)		Other Liabilities	0.217		2.390		06/15/2024
Interest rate swap	20,000		(1,385)		Other Liabilities	0.225		2.352		03/01/2024
Interest rate swap	6,000		(50)		Other Liabilities	0.217		1.866		06/15/2021
Interest rate swap	3,000		(25)		Other Liabilities	0.241		1.878		06/30/2021

The table below identifies the balance sheet category and fair values of HTLF's derivative instruments designated as loan swaps at December 31, 2021 and 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category	Weighted Average Receive Rate		Weighted Average Pay Rate
December 31, 2021
Customer interest rate swaps	$	463,069	$	23,574	Other Assets	4.44	%	2.35	%
Customer interest rate swaps	463,069		(23,574)		Other Liabilities	2.35	%	4.44	%
December 31, 2020
Customer interest rate swaps	$	440,719	$	43,422	Other Assets	4.46	%	2.46	%
Customer interest rate swaps	440,719		(43,422)		Other Liabilities	2.46	%	4.46	%

Gains and Losses Recognized on Derivative Instruments Designated as Cash Flow Hedges

The table below identifies the gains and losses recognized on HTLF's derivative instruments designated as cash flow hedges for the years ended December 31, 2021, and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Effective Portion
Gain (loss) recognized in other comprehensive income on interest rate swaps	$	5,380	$	(2,698)
Gain (loss) reclassified from accumulated other comprehensive income into income (expense) on interest rate swaps	1,403		1,794

Balance Sheet Category and Fair Values of Embedded Derivatives

The table below identifies the notional amount, fair value and balance sheet category of HTLF's fair value hedges at December 31, 2021, and December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category
December 31, 2021

Fair value hedges	$	16,755	$	(1,208)	Other liabilities
December 31, 2020

Fair value hedges	$	20,841	$	(2,480)	Other liabilities

The table below identifies the gains and losses recognized on HTLF's fair value hedges for the years ended December 31, 2021, and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Gain (loss) recognized in interest income on fair value hedges	$	1,272	$	(1,227)

The table below identifies the notional amount, fair value and balance sheet category of HTLF's embedded derivatives as of December 31, 2021, and December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category
December 31, 2021
Embedded derivatives	$	7,496	$	(317)	Other liabilities

December 31, 2020
Embedded derivatives	$	9,198	$	680	Other assets

The table below identifies the gains and losses recognized on HTLF's embedded derivatives for the years ended December 31, 2021 and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Gain (loss) recognized in other noninterest income on embedded derivatives	$	(997)	$	215

Balance Sheet Category and Fair Values of Derivative Instruments Not Designated as Hedging Instruments

The table below identifies the balance sheet category and fair values of HTLF's other free standing derivative instruments not designated as hedging instruments at December 31, 2021, and December 31, 2020, in thousands:


	Notional Amount		Fair Value		Balance Sheet Category
December 31, 2021
Interest rate lock commitments (mortgage)	$	37,046	$	1,306	Other Assets

Forward commitments	19,000		32		Other Assets
Forward commitments	35,500		(95)		Other Liabilities
Undesignated interest rate swaps	7,496		317		Other Assets

December 31, 2020
Interest rate lock commitments (mortgage)	$	42,078	$	1,827	Other Assets
Forward commitments	—		—		Other Assets
Forward commitments	86,500		(697)		Other Liabilities

Undesignated interest rate swaps	9,198		(680)		Other Liabilities

HTLF recognizes gains and losses on other free standing derivatives in two separate income statement categories. Interest rate lock commitments and forward commitments are recognized in net gains on sale of loans held for sale and undesignated interest rate swaps are recognized in other noninterest income. The table below identifies the gains and losses recognized in income on HTLF's other free standing derivative instruments not designated as hedging instruments for the years ended December 31, 2021, and December 31, 2020, in thousands:


	Year Ended December 31,
	2021		2020
Interest rate lock commitments (mortgage)	$	(2,345)	$	2,803
Forward commitments	32		(15)
Forward commitments	602		(585)
Undesignated interest rate swaps	997		(215)

INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense

The components of the provision for income taxes for the years ended December 31, 2021, 2020, and 2019 were as follows, in thousands:


	2021		2020		2019
Current:
Federal	$	32,440	$	34,513	$	24,106
State	11,352		12,450		11,298
Total current expense	$	43,792	$	46,963	$	35,404
Deferred:
Federal	$	8,938	$	(8,498)	$	760
State	2,605		(2,412)		(1,174)
Total deferred expense (benefit)	11,543		(10,910)		(414)
Total income tax expense	$	55,335	$	36,053	$	34,990

Schedule of Deferred Tax Assets and Liabilities

Deferred tax assets and liabilities at December 31, 2021 and 2020, were as follows, in thousands:


	2021		2020
Deferred tax assets:
Tax effect of net unrealized loss on securities carried at fair value reflected in stockholders’ equity	$	1,715	$	—
Tax effect of net unrealized loss on derivatives reflected in stockholders’ equity	367		1,130

Allowance for credit losses	28,149		33,393
Deferred compensation	11,299		9,623

Net operating loss carryforwards	18,874		17,585


Investments in partnerships	958		467

Deferred loan fees	1,691		5,006
Other	5,673		5,563
Total deferred tax assets	68,726		72,767
Valuation allowance for deferred tax assets	(15,120)		(12,828)
Total deferred tax assets after valuation allowance	$	53,606	$	59,939


Deferred tax liabilities:
Tax effect of net unrealized gain on securities carried at fair value reflected in stockholders’ equity	$	—	$	26,858

Securities	1,232		635
Premises, furniture and equipment	10,502		8,311


Purchase accounting	7,977		5,326
Prepaid expenses	2,078		2,675

Deferred loan costs	5,164		4,107
Other	2,250		3,905
Total deferred tax liabilities	29,203		51,817
Net deferred tax assets	$	24,403	$	8,122

Schedule of Effective Income Tax Rate Reconciliation

The actual income tax expense from continuing operations differs from the expected amounts for the years ended December 31, 2021, 2020, and 2019, (computed by applying the U.S. federal corporate tax rate of 21% for 2021, 2020, and 2019 income before income taxes) are as follows, in thousands:


	2021			2020			2019
Computed "expected" tax on net income	$	57,804		$	36,538		$	38,665
Increase (decrease) resulting from:
Nontaxable interest income	(5,504)			(4,011)			(3,281)
State income taxes, net of federal tax benefit	11,026			7,930			8,509

Tax credits	(7,613)			(4,521)			(6,860)
Valuation allowance	(440)			(374)			(1,648)
Excess tax expense/(benefit) on stock compensation	(270)			80			(229)

Other	332			411			(166)
Income taxes	$	55,335		$	36,053		$	34,990
Effective tax rates	20.1		%	20.7		%	19.0		%

STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of Status of RSUs

A summary of the status of RSUs as of December 31, 2021, 2020 and 2019, and changes during the years ended December 31, 2021, 2020, and 2019, follows:


	2021			2020			2019
	Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value
Outstanding at January 1	348,275	$	38.22	254,383	$	46.76	266,995	$	43.89
Granted	216,560	51.44		232,586	32.06		162,465	45.09
Vested	(149,350)	40.83		(119,916)	44.47		(148,158)	39.27
Forfeited	(25,600)	40.96		(18,778)	46.10		(26,919)	49.20
Outstanding at December 31	389,885	$	44.19	348,275	$	38.22	254,383	$	46.76

REGULATORY CAPITAL REQUIREMENTS AND RESTRICTIONS ON SUBSIDIARY DIVIDENDS (Tables)

12 Months Ended

Dec. 31, 2021

Federal Home Loan Banks [Abstract]

Schedule of Actual Capital Amounts and Ratios

The HTLF banks’ actual capital amounts and ratios are also presented in the tables below, in thousands:


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2021
Total Capital (to Risk-Weighted Assets)
Consolidated	$	2,040,500	15.90	%	$	1,026,345	8.00	%	N/A
Dubuque Bank and Trust Company	180,934		13.07		110,758		8.00		$	138,447	10.00	%
Illinois Bank & Trust	135,986		12.88		84,466		8.00		105,583		10.00
Wisconsin Bank & Trust	124,009		14.27		69,499		8.00		86,874		10.00
New Mexico Bank & Trust	213,981		12.10		141,530		8.00		176,912		10.00
Arizona Bank & Trust	157,475		12.61		99,886		8.00		124,858		10.00
Rocky Mountain Bank	64,366		13.07		39,385		8.00		49,231		10.00
Citywide Banks	265,964		15.09		140,999		8.00		176,248		10.00


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2021
Minnesota Bank & Trust	87,263		14.79		47,194		8.00		58,993		10.00
Bank of Blue Valley	160,694		16.74		76,785		8.00		95,982		10.00
Premier Valley Bank	111,741		12.82		69,720		8.00		87,151		10.00
First Bank & Trust	282,231		15.48		145,823		8.00		182,279		10.00

Tier 1 Capital (to Risk-Weighted Assets)
Consolidated	$	1,590,111	12.39	%	$	769,759	6.00	%	N/A
Dubuque Bank and Trust Company	168,321		12.16		83,068		6.00		$	110,758	8.00	%
Illinois Bank & Trust	126,869		12.02		63,350		6.00		84,466		8.00
Wisconsin Bank & Trust	114,825		13.22		52,124		6.00		69,499		8.00
New Mexico Bank & Trust	198,728		11.23		106,147		6.00		141,530		8.00
Arizona Bank & Trust	147,098		11.78		74,915		6.00		99,886		8.00
Rocky Mountain Bank	59,159		12.02		29,538		6.00		39,385		8.00
Citywide Banks	244,722		13.89		105,749		6.00		140,999		8.00
Minnesota Bank & Trust	81,637		13.84		35,396		6.00		47,194		8.00
Bank of Blue Valley	150,305		15.66		57,589		6.00		76,785		8.00
Premier Valley Bank	104,336		11.97		52,290		6.00		69,720		8.00
First Bank & Trust	263,096		14.43		109,367		6.00		145,823		8.00
Common Equity Tier 1 (to Risk-Weighted Assets)
Consolidated	$	1,479,406	11.53	%	$	577,319	4.50	%	N/A
Dubuque Bank and Trust Company	168,321		12.16		62,301		4.50		$	89,991	6.50	%
Illinois Bank & Trust	126,869		12.02		47,512		4.50		68,629		6.50
Wisconsin Bank & Trust	114,825		13.22		39,093		4.50		56,468		6.50
New Mexico Bank & Trust	198,728		11.23		79,611		4.50		114,993		6.50
Arizona Bank & Trust	147,098		11.78		56,186		4.50		81,158		6.50
Rocky Mountain Bank	59,159		12.02		22,154		4.50		32,000		6.50
Citywide Banks	244,722		13.89		79,312		4.50		114,561		6.50
Minnesota Bank & Trust	81,637		13.84		26,547		4.50		38,346		6.50
Bank of Blue Valley	150,305		15.66		43,192		4.50		62,388		6.50
Premier Valley Bank	104,336		11.97		39,218		4.50		56,648		6.50
First Bank & Trust	263,096		14.43		82,025		4.50		118,481		6.50
Tier 1 Capital (to Average Assets)
Consolidated	$	1,590,111	8.57	%	$	742,155	4.00	%	N/A
Dubuque Bank and Trust Company	168,321		8.02		83,982		4.00		$	104,978	5.00	%
Illinois Bank & Trust	126,869		7.55		67,212		4.00		84,016		5.00
Wisconsin Bank & Trust	114,825		9.66		47,551		4.00		59,439		5.00
New Mexico Bank & Trust	198,728		7.78		102,173		4.00		127,716		5.00
Arizona Bank & Trust	147,098		7.99		73,605		4.00		92,006		5.00
Rocky Mountain Bank	59,159		8.27		28,614		4.00		35,767		5.00
Citywide Banks	244,722		9.54		102,587		4.00		128,233		5.00
Minnesota Bank & Trust	81,637		9.69		33,698		4.00		42,123		5.00
Bank of Blue Valley	150,305		10.75		55,921		4.00		69,901		5.00
Premier Valley Bank	104,336		9.22		45,256		4.00		56,570		5.00
First Bank & Trust	263,096		9.84		106,986		4.00		133,732		5.00


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2020
Total Capital (to Risk-Weighted Assets)
Consolidated	$	1,739,048	14.71	%	$	945,523	8.00	%	N/A
Dubuque Bank and Trust Company	177,782		13.94		102,018		8.00		$	127,523	10.00	%
Illinois Bank & Trust	133,674		13.13		81,432		8.00		101,790		10.00
Wisconsin Bank & Trust	121,899		14.35		67,956		8.00		84,945		10.00
New Mexico Bank & Trust	177,708		13.40		106,120		8.00		132,649		10.00
Arizona Bank & Trust	112,589		12.16		74,056		8.00		92,571		10.00
Rocky Mountain Bank	56,872		13.49		33,732		8.00		42,166		10.00
Citywide Banks	258,419		15.30		135,097		8.00		168,871		10.00
Minnesota Bank & Trust	85,566		13.11		52,206		8.00		65,258		10.00
Bank of Blue Valley	157,093		17.40		72,240		8.00		90,300		10.00
Premier Valley Bank	93,032		12.62		58,968		8.00		73,710		10.00
First Bank & Trust	304,397		15.34		158,705		8.00		198,381		10.00
Tier 1 Capital (to Risk-Weighted Assets)
Consolidated	$	1,401,131	11.85	%	$	709,142	6.00	%	N/A
Dubuque Bank and Trust Company	164,316		12.89		76,514		6.00		$	102,018	8.00	%
Illinois Bank & Trust	121,513		11.94		61,074		6.00		81,432		8.00
Wisconsin Bank & Trust	111,985		13.18		50,967		6.00		67,956		8.00
New Mexico Bank & Trust	161,750		12.19		79,590		6.00		106,120		8.00
Arizona Bank & Trust	102,882		11.11		55,542		6.00		74,056		8.00
Rocky Mountain Bank	51,597		12.24		25,299		6.00		33,732		8.00
Citywide Banks	237,295		14.05		101,323		6.00		135,097		8.00
Minnesota Bank & Trust	78,661		12.05		39,155		6.00		52,206		8.00
Bank of Blue Valley	145,795		16.15		54,180		6.00		72,240		8.00
Premier Valley Bank	85,456		11.59		44,226		6.00		58,968		8.00
First Bank & Trust	279,521		14.09		119,029		6.00		158,705		8.00
Common Equity Tier 1 (to Risk Weighted Assets)
Consolidated	$	1,290,426	10.92	%	$	531,857	4.50	%	N/A
Dubuque Bank and Trust Company	164,316		12.89		57,385		4.50		$	82,890	6.50	%
Illinois Bank & Trust	121,513		11.94		45,806		4.50		66,164		6.50
Wisconsin Bank & Trust	111,985		13.18		38,225		4.50		55,214		6.50
New Mexico Bank & Trust	161,750		12.19		59,692		4.50		86,222		6.50
Arizona Bank & Trust	102,882		11.11		41,657		4.50		60,171		6.50
Rocky Mountain Bank	51,597		12.24		18,974		4.50		27,408		6.50
Citywide Banks	237,295		14.05		75,992		4.50		109,766		6.50
Minnesota Bank & Trust	78,661		12.05		29,366		4.50		42,418		6.50
Bank of Blue Valley	145,795		16.15		40,635		4.50		58,695		6.50
Premier Valley Bank	85,456		11.59		33,170		4.50		47,912		6.50
First Bank & Trust	279,521		14.09		89,271		4.50		128,948		6.50


	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
Tier 1 Capital (to Average Assets)
Consolidated	$	1,401,131	9.02	%	$	621,275	4.00	%	N/A
Dubuque Bank and Trust Company	164,316		8.52		77,150		4.00		$	96,437	5.00	%
Illinois Bank & Trust	121,513		8.22		59,129		4.00		73,912		5.00
Wisconsin Bank & Trust	111,985		9.67		46,337		4.00		57,921		5.00
New Mexico Bank & Trust	161,750		8.11		79,764		4.00		99,705		5.00
Arizona Bank & Trust	102,882		9.09		45,295		4.00		56,619		5.00
Rocky Mountain Bank	51,597		8.41		24,552		4.00		30,690		5.00
Citywide Banks	237,295		9.67		98,182		4.00		122,728		5.00
Minnesota Bank & Trust	78,661		8.68		36,251		4.00		45,313		5.00
Bank of Blue Valley	145,795		10.93		53,343		4.00		66,679		5.00
Premier Valley Bank	85,456		8.57		39,893		4.00		49,866		5.00
First Bank & Trust	279,521		17.63		63,407		4.00		79,259		5.00

FAIR VALUE (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The tables below present HTLF's assets and liabilities that are measured at fair value on a recurring basis as of December 31, 2021, and December 31, 2020, in thousands, aggregated by the level in the fair value hierarchy within which those measurements fall:


	Total Fair Value		Level 1		Level 2		Level 3
December 31, 2021
Assets

Securities available for sale
U.S. treasuries	$	1,008	$	1,008	$	—	$	—
U.S. agencies	193,384		—		193,384		—
Obligations of states and political subdivisions	2,085,033		—		2,085,033		—
Mortgage-backed securities - agency	2,349,289		—		2,349,289		—
Mortgage-backed securities - non-agency	1,743,379		—		1,743,379		—
Commercial mortgage-backed securities - agency	123,912		—		123,912		—
Commercial mortgage-backed securities - non-agency	600,888		—		600,888		—
Asset-backed securities	409,653		—		409,653		—
Corporate bonds	3,040		—		3,040		—
Equity securities with a readily determinable fair value	20,788		—		20,788		—
Derivative financial instruments(1)	23,891		—		23,891		—


	Total Fair Value		Level 1		Level 2		Level 3
Interest rate lock commitments	1,306		—		—		1,306
Forward commitments	32		—		32		—
Total assets at fair value	$	7,555,603	$	1,008	$	7,553,289	$	1,306
Liabilities
Derivative financial instruments(2)	$	25,099	$	—	$	25,099	$	—
Forward commitments	95		—		95		—
Total liabilities at fair value	$	25,194	$	—	$	25,194	$	—

(1) Includes back-to-back loan swaps and free standing derivative instruments.
(2) Includes embedded derivatives, fair value hedges and back-to-back loan swaps.
December 31, 2020
Assets

Securities available for sale
U.S. treasuries	$	2,026	$	2,026	$	—	$	—
U.S. agencies	166,779		—		166,779		—
Obligations of states and political subdivisions	1,635,227		—		1,635,227		—
Mortgage-backed securities - agency	1,355,270		—		1,355,270		—
Mortgage-backed securities - non-agency	1,449,116		—		1,449,116		—
Commercial mortgage-backed securities - agency	174,153		—		174,153		—
Commercial mortgage-backed securities - non-agency	252,767		—		252,767		—
Asset-backed securities	1,069,266		—		1,069,266		—
Corporate bonds	3,742		—		3,742		—
Equity securities	19,629		—		19,629		—
Derivative financial instruments(1)	44,102		—		44,102		—
Interest rate lock commitments	1,827		—		—		1,827
Forward commitments	—		—		—		—
Total assets at fair value	$	6,173,904	$	2,026	$	6,170,051	$	1,827
Liabilities
Derivative financial instruments(2)	$	51,962	$	—	$	51,962	$	—
Forward commitments	697		—		697		—
Total liabilities at fair value	$	52,659	$	—	$	52,659	$	—

(1) Includes embedded derivatives, back-to-back loan swaps and cash flow hedges.
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps and free standing derivative instruments.

Fair Value Measurements, Nonrecurring

The tables below present HTLF's assets that are measured at fair value on a nonrecurring basis, in thousands:


	Fair Value Measurements at December 31, 2021
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		(Gains)/Losses
Collateral dependent individually assessed loans:
Commercial and industrial	$	8,989	$	—	$	—	$	8,989	$	275
Owner occupied commercial real estate	8,447		—		—		8,447		—
Non-owner occupied commercial real estate	11,946		—		—		11,946		1,637
Real estate construction	—		—		—		—		—
Agricultural and agricultural real estate	11,404		—		—		11,404		372
Residential real estate	855		—		—		855		—
Consumer	—		—		—		—		—
Total collateral dependent individually assessed loans	$	41,641	$	—	$	—	$	41,641	$	2,284
Loans held for sale	$	21,640	$	—	$	21,640	$	—	$	(813)
Other real estate owned	1,927		—		—		1,927		686
Premises, furniture and equipment held for sale	10,828		—		—		10,828		241
Servicing rights	6,890		—		—		6,890		(1,088)


	Fair Value Measurements at December 31, 2020
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		(Gains)/Losses
Collateral dependent individually assessed loans:
Commercial and industrial	$	11,256	$	—	$	—	$	11,256	$	451
Owner occupied commercial real estate	5,874		—		—		5,874		11,631
Non-owner occupied commercial real estate	4,907		—		—		4,907		—
Real estate construction	—		—		—		—		—
Agricultural and agricultural real estate	12,451		—		—		12,451		—
Residential real estate	—		—		—		—		—
Consumer	—		—		—		—		—
Total collateral dependent impaired loans	$	34,488	$	—	$	—	$	34,488	$	12,082
Loans held for sale	$	57,949	$	—	$	57,949	$	—	$	(982)
Other real estate owned	6,624		—		—		6,624		1,044
Premises, furniture and equipment held for sale	6,499		—		—		6,499		3,288
Servicing rights	5,189		—		—		5,189		1,778

Quantitative Information on Assets Measured at Fair Value on Recurring and Nonrecurring Basis Using Level 3

The following tables present additional quantitative information about assets measured at fair value on a recurring and nonrecurring basis and for which HTLF has utilized Level 3 inputs to determine fair value, in thousands:

Fair Value at 12/31/21

Valuation Technique

Unobservable Input

Range (Weighted Average)

Interest rate lock
commitments

$

1,306

Discounted cash flows

Closing ratio

0 - 99% (88%)(1)

Premises, furniture and equipment held for sale

10,828

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

Fair Value at 12/31/21

Valuation Technique

Unobservable Input

Range (Weighted Average)

Other real estate owned

1,927

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-10%(3)

Servicing rights

6,890

Discounted cash flows

Discount rate

9 - 11% (9.02%)(4)

Constant prepayment rate

13.1 - 18.6% (13.4%)(4)

Collateral dependent individually assessed loans:

Commercial and industrial

$

8,989

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-6%(3)

Owner occupied commercial real estate

8,447

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-7%(3)

Non-owner occupied commercial real estate

11,946

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

Agricultural and agricultural real estate

11,404

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0%-7%%(3)

Residential real estate

855

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-7%(3)

(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.

(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.

(3) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

(4) The significant unobservable inputs used in the discounted cash flow analysis are the discount rate and constant prepayment rate.

Fair Value at 12/31/20

Valuation Technique

Unobservable Input

Range (Weighted Average)

Interest rate lock commitments

$

1,827

Discounted cash flows

Closing ratio

0 - 99% (86%)(1)

Premises, furniture and equipment held for sale

6,499

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

Other real estate owned

6,624

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-10%(3)

Servicing rights

5,189

Discounted cash flows

Discount rate

9 - 11% (9.02%)(4)

Constant prepayment rate

7.3 - 18.8% (16.2%)(4)

Collateral dependent individually assessed loans:

Commercial and industrial

11,256

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-8%(3)

Owner occupied commercial real estate

5,874

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-12%(3)

Non-owner occupied commercial real estate

4,907

Modified appraised value

Third party appraisal

(2)

Appraisal discounts

0-10%(3)

Agricultural and agricultural real estate

12,451

Modified appraised value

Third party appraisal

(2)

Appraisal discount

0-10%(3)

(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.

(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.

(3) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

(4) The significant unobservable inputs used in the discounted cash flow analysis are the discount rate and constant prepayment rate.

Summary of Changes in Fair Value of Level 3 Assets Measured at Fair Value on Recurring Basis

The changes in fair value of the interest rate lock commitments, which are Level 3 financial instruments and are measured on a recurring basis, are summarized in the following table, in thousands:


	For the Years Ended
	December 31, 2021		December 31, 2020
Balance at January 1,	$	1,827	$	681

Total gains (losses), net, included in earnings	(2,345)		2,803
Issuances	15,403		17,221
Settlements	(13,579)		(18,878)
Balance at period end,	$	1,306	$	1,827

Fair Value, by Balance Sheet Grouping

The following analysis, which is inherently limited in depicting fair value, also does not consider any value associated with either existing customer relationships or the ability of HTLF to create value through loan origination, obtaining deposits or fee generating activities. Many of the estimates presented below are based upon the use of highly subjective information and

assumptions and, accordingly, the results may not be precise. Management believes that fair value estimates may not be comparable between financial institutions due to the wide range of permitted valuation techniques and numerous estimates which must be made. Furthermore, because the disclosed fair value amounts were estimated as of the balance sheet date, the amounts actually realized or paid upon maturity or settlement of the various financial instruments could be significantly different.


					Fair Value Measurements at December 31, 2021
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	435,599	$	435,599	$	435,599	$	—	$	—
Time deposits in other financial institutions	2,894		2,894		2,894		—		—
Securities:

Carried at fair value	7,530,374		7,530,374		1,008		7,529,366		—




Held to maturity	84,709		94,139		—		94,139		—
Other investments	82,567		82,567		—		82,567		—

Loans held for sale	21,640		21,640		—		21,640		—
Loans, net:
Commercial	2,617,347		2,603,001		—		2,594,012		8,989
PPP	199,883		199,883		—		199,883		—
Owner occupied commercial real estate	2,221,120		2,222,030		—		2,213,583		8,447
Non-owner occupied commercial real estate	1,992,683		1,998,161		—		1,986,215		11,946
Real estate construction	833,581		844,578		—		844,578		—
Agricultural and agricultural real estate	748,540		749,238		—		737,834		11,404
Residential real estate	820,856		819,178		—		818,323		855
Consumer	410,474		415,487		—		415,487		—
Total Loans, net	9,844,484		9,851,556		—		9,809,915		41,641

Cash surrender value on life insurance	191,722		191,722		—		191,722		—
Derivative financial instruments(1)	23,891		23,891		—		23,891		—
Interest rate lock commitments	1,306		1,306		—		—		1,306
Forward commitments	32		32		—		32		—
Financial liabilities:
Deposits
Demand deposits	6,495,326		6,495,326		—		6,495,326		—
Savings deposits	8,897,909		8,897,909		—		8,897,909		—
Time deposits	1,024,020		1,024,020		—		1,024,020		—
Short term borrowings	131,597		131,597		—		131,597		—
Other borrowings	372,072		373,194		—		373,194		—
Derivative financial instruments(2)	25,099		25,099		—		25,099		—
Forward commitments	95		95		—		95		—

(1) Includes back-to-back loan swaps and free standing derivative instruments.
(2) Includes embedded derivatives, fair value hedges and back-to-back loan swaps.


					Fair Value Measurements at December 31, 2020
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	337,903	$	337,903	$	337,903	$	—	$	—
Time deposits in other financial institutions	3,129		3,129		3,129		—		—
Securities:

Carried at fair value	6,127,975		6,127,975		2,026		6,125,949		—




Held to maturity	88,839		100,041		—		100,041		—
Other investments	75,253		75,523		—		75,523		—

Loans held for sale	57,949		57,949		—		57,949		—
Loans, net:
Commercial and industrial	2,495,981		2,391,041		—		2,379,785		11,256
PPP	957,785		957,785		—		957,785		—
Owner occupied commercial real estate	1,756,405		1,745,397		—		1,739,523		5,874
Non-owner occupied commercial real estate	1,900,608		1,892,213		—		1,887,306		4,907
Real estate construction	843,140		849,224		—		849,224		—
Agricultural and agricultural real estate	707,397		697,729		—		685,278		12,451
Residential real estate	828,507		828,366		—		828,366		—
Consumer	401,622		407,914		—		407,914		—
Total Loans, net	9,891,445		9,769,669		—		9,735,181		34,488
Cash surrender value on life insurance	187,664		187,664		—		187,664		—
Derivative financial instruments(1)	44,102		44,102		—		44,102		—
Interest rate lock commitments	1,827		1,827		—		—		1,827
Forward commitments	—		—		—		—		—
Financial liabilities:
Deposits
Demand deposits	5,688,810		5,688,810		—		5,688,810		—
Savings deposits	8,019,704		8,019,704		—		8,019,704		—
Time deposits	1,271,391		1,273,468		—		1,273,468		—

Short term borrowings	167,872		167,872		—		167,872		—
Other borrowings	457,042		458,806		—		458,806		—
Derivative financial instruments(2)	51,962		51,962		—		51,962		—
Forward commitments	697		697		—		697		—

(1) Includes embedded derivatives, back-to-back loan swaps and cash flow hedges.
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps and free standing derivative instruments.

REVENUE (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of noninterest income in-scope and out-of-scope of Topic 606

The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the year ended December 31, 2021, 2020, and 2019, in thousands:


	For the Years Ended December 31,
	2021		2020		2019
In-scope of Topic 606
Service charges and fees
Service charges and fees on deposit accounts	$	16,414	$	14,441	$	12,790
Overdraft fees	11,005		9,166		11,543
Customer service and other service fees	220		177		331
Credit card fee income	21,623		16,026		15,594
Debit card income	10,441		7,657		11,899

Total service charges and fees	59,703		47,467		52,157
Trust fees	24,417		20,862		19,399
Brokerage and insurance commissions	3,546		2,756		3,786
Total noninterest income in-scope of Topic 606	$	87,666	$	71,085	$	75,342

Out-of-scope of Topic 606
Loan servicing income	$	3,276	$	2,977	$	4,843
Securities gains, net	5,910		7,793		7,659
Unrealized gain on equity securities, net	58		640		525
Net gains on sale of loans held for sale	20,605		28,515		15,555
Valuation adjustment on servicing rights	1,088		(1,778)		(911)
Income on bank owned life insurance	3,762		3,554		3,785
Other noninterest income	6,570		7,505		9,410
Total noninterest income out-of-scope of Topic 606	41,269		49,206		40,866
Total noninterest income	$	128,935	$	120,291	$	116,208

PARENT COMPANY ONLY FINANCIAL INFORMATION (Tables)

12 Months Ended

Dec. 31, 2021

Condensed Financial Information Disclosure [Abstract]

Schedule of Condensed Balance Sheets

Condensed financial information for Heartland Financial USA, Inc. is as follows:


BALANCE SHEETS
(Dollars in thousands)
	December 31,
	2021		2020
Assets:
Cash and interest bearing deposits	$	259,830	$	84,728



Investment in subsidiaries	2,263,037		2,234,813
Other assets	81,020		68,263

Total assets	$	2,603,887	$	2,387,804
Liabilities and Stockholders’ equity:

Other borrowings	$	369,581	$	265,168
Accrued expenses and other liabilities	52,128		43,405
Total liabilities	421,709		308,573
Stockholders’ equity:
Preferred stock	110,705		110,705
Common stock	42,275		42,094
Capital surplus	1,071,956		1,062,083
Retained earnings	962,994		791,630
Accumulated other comprehensive income (loss)	(5,752)		72,719

Total stockholders’ equity	2,182,178		2,079,231
Total liabilities and stockholders’ equity	$	2,603,887	$	2,387,804

Schedule of Condensed Income Statements


INCOME STATEMENTS
(Dollars in thousands)
	For the Years Ended December 31,
	2021		2020		2019
Operating revenues:
Dividends from subsidiaries	$	163,500	$	83,000	$	137,000


Other	1,885		1,948		893
Total operating revenues	165,385		84,948		137,893
Operating expenses:
Interest	12,851		13,573		15,044
Salaries and employee benefits	7,509		8,147		4,072
Professional fees	5,161		4,310		3,029
Other operating expenses	10,984		4,939		15,559
Total operating expenses	36,505		30,969		37,704
Equity in undistributed earnings	75,368		73,430		34,307
Income before income tax benefit	204,248		127,409		134,496
Income tax benefit	15,675		10,529		14,633
Net income	219,923		137,938		149,129
Preferred dividends	(8,050)		(4,451)		—

Net income available to common stockholders	$	211,873	$	133,487	$	149,129

Schedule of Condensed Statements of Cash Flows


STATEMENTS OF CASH FLOWS
(Dollars in thousands)
	For the Years Ended December 31,
	2021		2020		2019
Cash flows from operating activities:
Net income	$	219,923	$	137,938	$	149,129
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed earnings of subsidiaries	(75,368)		(73,430)		(34,307)

Gain on extinguishment of debt	—		—		(375)
Increase in accrued expenses and other liabilities	8,723		8,419		3,274
Increase in other assets	(13,069)		(19,168)		(12,248)

Excess tax (expense) benefit from stock based compensation	312		(93)		270
Other, net	12,632		6,375		4,103
Net cash provided by operating activities	153,153		60,041		109,846
Cash flows from investing activities:
Capital contributions to subsidiaries	(34,000)		(70,000)		(46,583)
Repayment of advances from subsidiaries	—		—		6,000





Net assets acquired	—		(41,982)		(594)
Net cash used by investing activities	(34,000)		(111,982)		(41,177)
Cash flows from financing activities:
Proceeds on short-term revolving credit line	—		—		—
Proceeds from borrowings	147,614		—		—
Repayments on short-term revolving credit line	—		—		—
Repayments of borrowings	(44,417)		(7,000)		(20,023)
Payment for the redemption of debt	—		—		(2,500)


Cash dividends paid	(48,559)		(31,906)		(24,607)

Proceeds from issuance of preferred stock	—		110,705		—
Proceeds from issuance of common stock	1,311		3,004		661
Net cash provided by (used in) by financing activities	55,949		74,803		(46,469)
Net increase in cash and cash equivalents	175,102		22,862		22,200
Cash and cash equivalents at beginning of year	84,728		61,866		39,666
Cash and cash equivalents at end of year	$	259,830	$	84,728	$	61,866
Supplemental disclosure:
Cumulative effect adjustment from the adoption of ASU 2016-13 on January 1, 2020	$	—	$	14,891	$	—
Dividends declared, not paid	2,013		2,013		—

Stock consideration granted for acquisitions	—		217,202		92,258

LEASES (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Schedule of ROU Assets and Lease Liabilities

The table below presents HTLF's ROU assets and lease liabilities as of December 31, 2021 and December 31, 2020, in thousands:


		As of December 31,
	Classification	2021		2020
Operating lease right-of-use assets	Other assets	$	22,630	$	21,557
Operating lease liabilities	Accrued expenses and other liabilities	$	26,125	$	25,337

Schedule of Lease Costs and Supplemental Information

The table below presents the lease costs and supplemental information as of December 31, 2021, 2020 and 2019, in thousands:


	Income Statement Category	As of December 31,
Lease Cost		2021		2020		2019
Operating lease cost	Occupancy expense	$	8,013	$	6,071	$	6,031
Variable lease cost	Occupancy expense	47		72		145

Total lease cost		$	8,060	$	6,143	$	6,176
Supplemental Information
Noncash reduction of ROU assets	Occupancy expense	$	1,244	$	1,037	$	1,771
Noncash reduction lease liabilities	Occupancy expense	—		389		1,789

Supplemental balance sheet information		As of December 31, 2021
Weighted-average remaining operating lease term (in years)		5.99
Weighted-average discount rate for operating leases		2.69						%

Schedule of Maturity Analysis of Operating Lease Liabilities and Reconciliation of the Undiscounted Cash Flows to the Total of Operating Lease Liabilities

A maturity analysis of operating lease liabilities and reconciliation of the undiscounted cash flows to the total of operating lease liabilities as of December 31, 2021 is as follows, in thousands:


Year ending December 31,
2022	$	6,595
2023	5,154
2024	3,484
2025	3,363
2026	2,940
Thereafter	6,837
Total lease payments	$	28,373
Less interest	(2,248)
Present value of lease liabilities	$	26,125

SUMMARY OF QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2021

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Information (Unaudited)


(Dollars in thousands, except per share data)
	As of and for the Quarter Ended
2021	December 31		September 30		June 30		March 31
Net interest income	$	137,194	$	142,543	$	141,218	$	139,605
Provision (benefit) for credit losses	(5,313)		(4,534)		(7,080)		(648)
Net interest income after provision for credit losses	142,507		147,077		148,298		140,253
Noninterest income	32,730		32,724		33,164		30,317
Noninterest expense	115,386		110,627		103,376		102,423
Income taxes	10,271		13,250		16,481		15,333
Net income	49,580		55,924		61,605		52,814


Preferred dividends	(2,012)		(2,013)		(2,012)		(2,013)

Net income available to common stockholders	$	47,568	$	53,911	$	59,593	$	50,801

Per share:
Earnings per share-basic	$	1.12	$	1.27	$	1.41	$	1.20
Earnings per share-diluted	1.12		1.27		1.41		1.20
Cash dividends declared on common stock	0.27		0.25		0.22		0.22
Book value per common share	49.00		48.79		48.50		46.13
Weighted average common shares outstanding	42,309,003		42,302,780		42,242,893		42,174,092
Weighted average diluted common shares outstanding	42,479,442		42,415,993		42,359,873		42,335,747


(Dollars in thousands, except per share data)
	As of and for the Quarter Ended
2020	December 31		September 30		June 30		March 31
Net interest income	$	132,575	$	122,497	$	124,146	$	112,511
Provision (benefit) for credit losses	17,072		1,678		26,796		21,520
Net interest income after provision for credit losses	115,503		120,819		97,350		90,991
Noninterest income	32,621		31,216		30,637		25,817
Noninterest expense	99,269		90,396		90,439		90,859
Income taxes	9,046		13,681		7,417		5,909
Net income	39,809		47,958		30,131		20,040


Preferred dividends	(2,014)		(2,437)		—		—

Net income available to common stockholders	$	37,795	$	45,521	$	30,131	$	20,040

Per share:
Earnings per share-basic	$	0.98	$	1.23	$	0.82	$	0.54
Earnings per share-diluted	0.98		1.23		0.82		0.54
Cash dividends declared on common stock	0.20		0.20		0.20		0.20
Book value per common share	46.77		46.11		44.42		42.21
Weighted average common shares outstanding	38,420,063		36,941,110		36,880,325		36,820,972
Weighted average diluted common shares outstanding	38,534,082		36,995,572		36,915,630		36,895,591

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Trading Securities) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Trading securities	$ 0	$ 0

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Allowance for Credit Losses on AFS Debt Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allowance for credit losses on AFS debt securities	$ 0	$ 0
Held to maturity securities, fair value	$ 0	$ (51)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Troubled Debt Restructured Loans) (Details)	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Threshold period of consecutive payments to remove from nonaccrual status	6 months
Threshold period after modification holding current status to be considered in compliance with modified terms	30 days

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Mortgage Servicing and Transfers of Financial Assets and Servicing Rights, Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Servicing Asset at Amortized Cost [Line Items]
Aggregate unpaid principal balance	$ 723,300	$ 743,300
Mortgage Servicing Rights 15 Year
Servicing Asset at Amortized Cost [Line Items]
Servicing rights, valuation allowance	$ 327	$ 422
Servicing rights, term	15 years	15 years
Mortgage Servicing Rights 30 Year
Servicing Asset at Amortized Cost [Line Items]
Servicing rights, valuation allowance	$ 1,300	$ 1,400
Servicing rights, term	30 years	30 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Premises, Furniture and Equipment, net) (Details)	12 Months Ended
	Dec. 31, 2021
Building \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	18 years
Building \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	39 years
Land Improvements
Property, Plant and Equipment [Line Items]
Useful life	15 years
Furniture and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Furniture and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful life	7 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Core Deposit Intangibles and Customer Relationship Intangibles, Net) (Details)	12 Months Ended
	Dec. 31, 2021
Core Deposit Intangibles \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	8 years
Core Deposit Intangibles \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	18 years
Customer Relationship Intangible
Finite-Lived Intangible Assets [Line Items]
Useful life	22 years

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net income attributable to HTLF	$ 49,580	$ 55,924	$ 61,605	$ 52,814	$ 39,809	$ 47,958	$ 30,131	$ 20,040	$ 219,923	$ 137,938	$ 149,129
Preferred dividends	(2,012)	(2,013)	(2,012)	(2,013)	(2,014)	(2,437)	0	0	(8,050)	(4,451)	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 47,568	$ 53,911	$ 59,593	$ 50,801	$ 37,795	$ 45,521	$ 30,131	$ 20,040	$ 211,873	$ 133,487	$ 149,129
Weighted average common shares outstanding for basic earnings per share (in shares)	42,309,003	42,302,780	42,242,893	42,174,092	38,420,063	36,941,110	36,880,325	36,820,972	42,260,000	37,269,000	35,991,000
Assumed incremental common shares issued upon exercise of stock options and non-vested restricted stock units (in shares)									151,000	88,000	71,000
Weighted average common shares for diluted earnings per share (in shares)	42,479,442	42,415,993	42,359,873	42,335,747	38,534,082	36,995,572	36,915,630	36,895,591	42,411,000	37,357,000	36,062,000
Earnings per common share — basic (in dollars per share)	$ 1.12	$ 1.27	$ 1.41	$ 1.20	$ 0.98	$ 1.23	$ 0.82	$ 0.54	$ 5.01	$ 3.58	$ 4.14
Earnings per common share — diluted (in dollars per share)	$ 1.12	$ 1.27	$ 1.41	$ 1.20	$ 0.98	$ 1.23	$ 0.82	$ 0.54	$ 5.00	$ 3.57	$ 4.14
Number of antidilutive stock units excluded from diluted earnings per share computation									1,000	0	0

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Treasury Stock, Value	$ 0	$ 0

ACQUISITIONS (Narrative) (Details)		12 Months Ended
ACQUISITIONS (Narrative) (Details)	Dec. 04, 2020 USD ($) branch $ / shares	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Assets		$ 17,908,339,000	$ 19,274,549,000
Held to maturity		10,023,051,000	9,954,572,000
Deposits		14,979,905,000	$ 16,417,255,000
Arizona Bank & Trust
Business Acquisition [Line Items]
Number of banking centers acquired \| branch	4
Arizona Bank & Trust
Business Acquisition [Line Items]
Assets	$ 419,700,000
Held to maturity	150,700,000
Deposits	415,500,000
AIM Bancshares, Inc.
Business Acquisition [Line Items]
Assets	1,970,000,000
Held to maturity	1,090,000,000.00
Deposits	$ 1,670,000,000
AIM Bancshares, Inc.
Business Acquisition [Line Items]
Number of shares issued in exchange per share (in shares) \| $ / shares	$ 207
Cash issued in exchange per share	$ 1,887.16
Common stock price (in dollars per share) \| $ / shares	$ 41.89
Total consideration paid	$ 264,477,000
Common stock consideration	217,200,000
Cash payments to acquire business	47,275,000
Merger related expenses		$ 2,500,000
AIM Bancshares, Inc. \| Holders Of In-The-Money Options
Business Acquisition [Line Items]
Common stock consideration	$ 4,900,000

ACQUISITIONS (Acquisitions Fair Values) (Details) - USD ($) $ in Thousands	Dec. 04, 2020	Dec. 31, 2021	Dec. 31, 2020
Fair value of liabilities assumed
Goodwill resulting from acquisition		$ 576,005	$ 576,005
AIM Bancshares, Inc.
Fair value of consideration paid:
Common stock (in shares)	5,185,045
Common stock (5,185,045 shares)	$ 217,202
Cash	47,275
Total consideration paid	264,477
Fair value of assets acquired
Cash and cash equivalents	470,085
Securities:
Carried at fair value	267,936
Other securities	3,210
Loans held to maturity	1,087,041
Allowance for credit losses for loans	(12,055)
Net loans held to maturity	1,074,986
Premises, furniture and equipment, net	27,867
Other real estate, net	1,119
Core deposit intangibles and customer relationships, net	3,102
Cash surrender value on life insurance	13,418
Other assets	20,159
Total assets	1,881,882
Fair value of liabilities assumed
Deposits	1,670,715
Short term borrowings	26,306
Other liabilities	11,807
Total liabilities assumed	1,708,828
Fair value of net assets acquired	173,054
Goodwill resulting from acquisition	$ 91,423

CASH AND DUE FROM BANKS (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Abstract]
Reserve balance requirement	$ 0	$ 0

SECURITIES (Available-for-sale Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 7,515,550	$ 6,004,596
Amortized Cost, Equity Securities	20,788	19,629
Amortized Cost, Total	7,536,338	6,024,225
Gross Unrealized Gains	78,269	127,866
Gross Unrealized Losses	(84,233)	(24,116)
Securities available for sale	7,509,586	6,108,346
Estimated Fair Value, Equity Securities	20,788	19,629
Estimated Fair Value, Total	7,530,374	6,127,975
U.S. treasuries
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	997	1,995
Gross Unrealized Gains	11	31
Gross Unrealized Losses	0	0
Securities available for sale	1,008	2,026
U.S. agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	193,932	167,048
Gross Unrealized Gains	264	657
Gross Unrealized Losses	(812)	(926)
Securities available for sale	193,384	166,779
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,045,386	1,562,631
Gross Unrealized Gains	56,263	75,555
Gross Unrealized Losses	(16,616)	(2,959)
Securities available for sale	2,085,033	1,635,227
Mortgage-backed securities - agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,388,601	1,351,964
Gross Unrealized Gains	11,870	16,029
Gross Unrealized Losses	(51,182)	(12,723)
Securities available for sale	2,349,289	1,355,270
Mortgage-backed securities - non-agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,749,838	1,428,068
Gross Unrealized Gains	4,570	22,688
Gross Unrealized Losses	(11,029)	(1,640)
Securities available for sale	1,743,379	1,449,116
Commercial mortgage-backed securities - agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	125,397	171,451
Gross Unrealized Gains	1,429	3,440
Gross Unrealized Losses	(2,914)	(738)
Securities available for sale	123,912	174,153
Commercial mortgage-backed securities - non-agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	600,253	253,421
Gross Unrealized Gains	998	37
Gross Unrealized Losses	(363)	(691)
Securities available for sale	600,888	252,767
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	408,167	1,064,255
Gross Unrealized Gains	2,803	9,421
Gross Unrealized Losses	(1,317)	(4,410)
Securities available for sale	409,653	1,069,266
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,979	3,763
Gross Unrealized Gains	61	8
Gross Unrealized Losses	0	(29)
Securities available for sale	$ 3,040	$ 3,742

SECURITIES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
SECURITIES (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Accrued interest receivable	$ 29,400	$ 20,800
Securities held to maturity with unrealized losses	0	0
Reclassification from held to maturity securities	(84,709)	(88,890)
Reclassification to debt securities available for sale	7,509,586	6,108,346
Equity securities with a readily determinable fair value	20,788	19,629
Equity securities with a readily determinable fair value	20,788	19,629
FHLB stock	22,600	19,500
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	51
Obligations of states and political subdivisions
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Reclassification from held to maturity securities	(84,709)	(88,890)
Reclassification to debt securities available for sale	2,085,033	1,635,227
Debt Securities, Held-to-maturity, Allowance for Credit Loss	0	51	$ 0
Provision for credit losses	(51)	(107)
Obligations of states and political subdivisions \| Impact of ASU 2016-13 adoption
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Debt Securities, Held-to-maturity, Allowance for Credit Loss		0	158
Obligations of states and political subdivisions \| Adjusted balance
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Debt Securities, Held-to-maturity, Allowance for Credit Loss		51	$ 158
Collateral Pledged
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Securities pledged as collateral	$ 1,660,000	$ 2,120,000

SECURITIES (Held-to-maturity Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Total investment securities	$ 84,709	$ 88,890
Gross Unrealized Gains	9,430	11,151
Gross Unrealized Losses	0	0
Estimated Fair Value	94,139	100,041
Held to maturity securities, fair value	0	(51)
Obligations of states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Total investment securities	84,709	88,890
Gross Unrealized Gains	9,430	11,151
Gross Unrealized Losses	0	0
Estimated Fair Value	94,139	100,041
Held to maturity securities, fair value	$ 0	$ (51)	$ 0

SECURITIES (Available-for-sale Securities, Debt Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Amortized Cost
Due in 1 year or less	$ 2,455
Due in 1 to 5 years	19,058
Due in 5 to 10 years	173,467
Due after 10 years	2,048,314
Total debt securities	2,243,294
Mortgage and asset-backed securities	5,272,256
Equity securities with a readily determinable fair value	20,788	$ 19,629
Total investment securities	7,536,338
Estimated Fair Value
Due in 1 year or less	2,481
Due in 1 to 5 years	19,897
Due in 5 to 10 years	175,188
Due after 10 years	2,084,899
Total debt securities	2,282,465
Mortgage and asset-backed securities	5,227,121
Equity securities with a readily determinable fair value	20,788	$ 19,629
Total investment securities	$ 7,530,374

SECURITIES (Held-to-maturity Securities, Debt Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Amortized Cost
Due in 1 year or less	$ 5,096
Due in 1 to 5 years	38,787
Due in 5 to 10 years	34,824
Due after 10 years	6,002
Total investment securities	84,709	$ 88,890
Estimated Fair Value
Due in 1 year or less	5,112
Due in 1 to 5 years	40,561
Due in 5 to 10 years	39,871
Due after 10 years	8,595
Total investment securities	$ 94,139	$ 100,041

SECURITIES (Gross Realized Gain (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Available for Sale Securities sold:
Proceeds from sales of available for sale securities	$ 1,475,598	$ 1,097,378	$ 1,628,467
Gross security gains	11,892	13,208	11,774
Gross security losses	$ 5,982	$ 5,616	$ 4,115

SECURITIES (Available for Sale Securities Unrealized Losses) (Details) $ in Thousands	Dec. 31, 2021 USD ($) bankLocation	Dec. 31, 2020 USD ($) bankLocation
Fair Value
Less than 12 months	$ 3,226,422	$ 1,672,530
12 months or longer	815,822	508,436
Total	4,042,244	2,180,966
Unrealized Losses
Less than 12 months	(57,123)	(18,373)
12 months or longer	(27,110)	(5,743)
Total	$ (84,233)	$ (24,116)
Less than 12 Months, Count \| bankLocation	242	127
12 Months or Longer, Count \| bankLocation	86	103
Total, Count \| bankLocation	328	230
U.S. agencies
Fair Value
Less than 12 months	$ 100,839	$ 2,981
12 months or longer	0	99,922
Total	100,839	102,903
Unrealized Losses
Less than 12 months	(812)	(8)
12 months or longer	0	(918)
Total	$ (812)	$ (926)
Less than 12 Months, Count \| bankLocation	2	5
12 Months or Longer, Count \| bankLocation	0	72
Total, Count \| bankLocation	2	77
Obligations of states and political subdivisions
Fair Value
Less than 12 months	$ 596,866	$ 346,598
12 months or longer	236,329	0
Total	833,195	346,598
Unrealized Losses
Less than 12 months	(10,115)	(2,959)
12 months or longer	(6,501)	0
Total	$ (16,616)	$ (2,959)
Less than 12 Months, Count \| bankLocation	113	49
12 Months or Longer, Count \| bankLocation	49	0
Total, Count \| bankLocation	162	49
Mortgage-backed securities - agency
Fair Value
Less than 12 months	$ 1,383,808	$ 653,793
12 months or longer	474,724	31,012
Total	1,858,532	684,805
Unrealized Losses
Less than 12 months	(33,291)	(12,342)
12 months or longer	(17,891)	(381)
Total	$ (51,182)	$ (12,723)
Less than 12 Months, Count \| bankLocation	83	35
12 Months or Longer, Count \| bankLocation	19	3
Total, Count \| bankLocation	102	38
Mortgage-backed securities - non-agency
Fair Value
Less than 12 months	$ 929,515	$ 378,843
12 months or longer	23,821	1,622
Total	953,336	380,465
Unrealized Losses
Less than 12 months	(10,870)	(1,639)
12 months or longer	(159)	(1)
Total	$ (11,029)	$ (1,640)
Less than 12 Months, Count \| bankLocation	27	17
12 Months or Longer, Count \| bankLocation	5	1
Total, Count \| bankLocation	32	18
Commercial mortgage-backed securities - agency
Fair Value
Less than 12 months	$ 26,999	$ 46,541
12 months or longer	53,025	0
Total	80,024	46,541
Unrealized Losses
Less than 12 months	(689)	(738)
12 months or longer	(2,225)	0
Total	$ (2,914)	$ (738)
Less than 12 Months, Count \| bankLocation	8	6
12 Months or Longer, Count \| bankLocation	5	0
Total, Count \| bankLocation	13	6
Commercial mortgage-backed securities - non-agency
Fair Value
Less than 12 months	$ 74,450	$ 100,042
12 months or longer	14,124	35,428
Total	88,574	135,470
Unrealized Losses
Less than 12 months	(145)	(15)
12 months or longer	(218)	(676)
Total	$ (363)	$ (691)
Less than 12 Months, Count \| bankLocation	3	2
12 Months or Longer, Count \| bankLocation	2	3
Total, Count \| bankLocation	5	5
Asset-backed securities
Fair Value
Less than 12 months	$ 113,945	$ 141,824
12 months or longer	13,799	340,452
Total	127,744	482,276
Unrealized Losses
Less than 12 months	(1,201)	(643)
12 months or longer	(116)	(3,767)
Total	$ (1,317)	$ (4,410)
Less than 12 Months, Count \| bankLocation	6	9
12 Months or Longer, Count \| bankLocation	6	24
Total, Count \| bankLocation	12	33
Corporate bonds
Fair Value
Less than 12 months		$ 1,908
12 months or longer		0
Total		1,908
Unrealized Losses
Less than 12 months		(29)
12 months or longer		0
Total		$ (29)
Less than 12 Months, Count \| bankLocation		4
12 Months or Longer, Count \| bankLocation		0
Total, Count \| bankLocation		4

SECURITIES (Schedule of allowance for credit loss for securities held to maturity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 51
Ending balance	0	$ 51
Obligations of states and political subdivisions
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	51	0
Provision for credit losses	(51)	(107)
Ending balance	0	51
Obligations of states and political subdivisions \| Impact of ASU 2016-13 adoption
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	0	158
Ending balance		0
Obligations of states and political subdivisions \| Adjusted balance
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 51	158
Ending balance		$ 51

SECURITIES (Schedule of financing receivable credit quality indicators) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Held to maturity debt securities	$ 84,709	$ 88,890
Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Held to maturity debt securities	84,709	88,890
Standard & Poor's, AAA Rating \| Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Held to maturity debt securities	3,265	0
Standard & Poor's, AA, AA+, AA- \| Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Held to maturity debt securities	61,471	64,385
Standard & Poor's, A+, A, A- Rating \| Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Held to maturity debt securities	15,034	18,353
Standard & Poor's, BBB Rating \| Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Held to maturity debt securities	4,939	4,208
Standard & Poor's, Not Rated \| Obligations of states and political subdivisions
Financing Receivable, Recorded Investment [Line Items]
Held to maturity debt securities	$ 0	$ 1,944

LOANS (Loans Held to Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	$ 9,954,572	$ 10,023,051
Allowance for credit losses	(110,088)	(131,606)	$ (70,395)	$ (61,963)
Loans receivable, net	9,844,484	9,891,445
Commercial and industrial \| Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	2,645,085	2,534,799
Allowance for credit losses	(27,738)	(38,818)	(34,207)
Commercial and industrial \| Paycheck Protection Program ("PPP")
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	199,883	957,785
Allowance for credit losses	0	0
Commercial and industrial \| Owner occupied commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	2,240,334	1,776,406
Allowance for credit losses	(19,214)	(20,001)	(7,921)
Commercial and industrial \| Non-owner occupied commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	2,010,591	1,921,481
Allowance for credit losses	(17,908)	(20,873)	(7,584)
Commercial and industrial \| Real estate construction
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	856,119	863,220
Allowance for credit losses	(22,538)	(20,080)	(8,677)
Agricultural and agricultural real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	753,753	714,526
Allowance for credit losses	(5,213)	(7,129)	(5,680)
Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	829,283	840,442
Allowance for credit losses	(8,427)	(11,935)	(1,504)
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable held to maturity	419,524	414,392
Allowance for credit losses	$ (9,050)	$ (12,770)	$ (4,822)

LOANS (Narrative) (Details)	12 Months Ended
LOANS (Narrative) (Details)	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	$ 35,300,000	$ 42,400,000
Individually assessed loans, nonaccrual	500,000
Troubled debt restructured loans	$ 10,400,000	$ 6,200,000
Number of loans classified as doubtful \| loan	0	0
Number of loans classified as loss \| loan	0	0
Loans receivable held to maturity	$ 9,954,572,000	$ 10,023,051,000
Increase in allowance	110,088,000	$ 131,606,000	$ 70,395,000	$ 61,963,000
Loans secured by real estate property in process of foreclosure	$ 1,000,000
Loans delinquent 30-89 days as a percentage of total loans	0.07%	0.23%
Interest income on nonaccrual loans	$ 0	$ 0
Nonaccrual loans with no related allowance	25,500,000	32,500,000
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable held to maturity	372,031,000	477,754,000
Nonperforming Financial Instruments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructured loans	9,500,000	3,800,000
Performing Financial Instruments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructured loans	817,000	2,400,000
Paycheck Protection Program ("PPP") \| Nonpass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable held to maturity	27,800,000	$ 77,100,000
Increase in allowance	$ 0

LOANS (Allowance for Credit Losses on Financing Receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance For Credit Losses
Individually Evaluated for Credit Losses	$ 7,646	$ 9,426
Collectively Evaluated for Credit Losses	102,442	122,180
Total	110,088	131,606	$ 70,395	$ 61,963
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	49,288	57,230
Loans Collectively Evaluated for Credit Losses	9,905,284	9,965,821
Total	9,954,572	10,023,051
Commercial and industrial \| Commercial and industrial
Allowance For Credit Losses
Individually Evaluated for Credit Losses	4,562	4,077
Collectively Evaluated for Credit Losses	23,176	34,741
Total	27,738	38,818	34,207
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	13,551	16,578
Loans Collectively Evaluated for Credit Losses	2,631,534	2,518,221
Total	2,645,085	2,534,799
Commercial and industrial \| Paycheck Protection Program ("PPP")
Allowance For Credit Losses
Individually Evaluated for Credit Losses	0	0
Collectively Evaluated for Credit Losses	0	0
Total	0	0
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	0	0
Loans Collectively Evaluated for Credit Losses	199,883	957,785
Total	199,883	957,785
Commercial and industrial \| Owner occupied commercial real estate
Allowance For Credit Losses
Individually Evaluated for Credit Losses	105	111
Collectively Evaluated for Credit Losses	19,109	19,890
Total	19,214	20,001	7,921
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	8,552	11,174
Loans Collectively Evaluated for Credit Losses	2,231,782	1,765,232
Total	2,240,334	1,776,406
Commercial and industrial \| Non-owner occupied commercial real estate
Allowance For Credit Losses
Individually Evaluated for Credit Losses	610	3,250
Collectively Evaluated for Credit Losses	17,298	17,623
Total	17,908	20,873	7,584
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	12,557	13,490
Loans Collectively Evaluated for Credit Losses	1,998,034	1,907,991
Total	2,010,591	1,921,481
Commercial and industrial \| Real estate construction
Allowance For Credit Losses
Individually Evaluated for Credit Losses	0	0
Collectively Evaluated for Credit Losses	22,538	20,080
Total	22,538	20,080	8,677
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	0	0
Loans Collectively Evaluated for Credit Losses	856,119	863,220
Total	856,119	863,220
Agricultural and agricultural real estate
Allowance For Credit Losses
Individually Evaluated for Credit Losses	2,369	1,988
Collectively Evaluated for Credit Losses	2,844	5,141
Total	5,213	7,129	5,680
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	13,773	15,453
Loans Collectively Evaluated for Credit Losses	739,980	699,073
Total	753,753	714,526
Residential real estate
Allowance For Credit Losses
Individually Evaluated for Credit Losses	0	0
Collectively Evaluated for Credit Losses	8,427	11,935
Total	8,427	11,935	1,504
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	855	535
Loans Collectively Evaluated for Credit Losses	828,428	839,907
Total	829,283	840,442
Consumer
Allowance For Credit Losses
Individually Evaluated for Credit Losses	0	0
Collectively Evaluated for Credit Losses	9,050	12,770
Total	9,050	12,770	$ 4,822
Gross Loans Receivable Held to Maturity
Loans Individually Evaluated for Credit Losses	0	0
Loans Collectively Evaluated for Credit Losses	419,524	414,392
Total	$ 419,524	$ 414,392

LOANS (Troubled Debt Restructurings on Financing Receivables) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	2	3
Pre-Modification Recorded Investment	$ 7,850	$ 112
Post-Modification Recorded Investment	$ 7,850	$ 118
Commercial and industrial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	1
Pre-Modification Recorded Investment	$ 0	$ 20
Post-Modification Recorded Investment	$ 0	$ 20
Commercial and industrial \| Paycheck Protection Program ("PPP")
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre-Modification Recorded Investment	$ 0	$ 0
Post-Modification Recorded Investment	$ 0	$ 0
Commercial and industrial \| Owner occupied commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre-Modification Recorded Investment	$ 0	$ 0
Post-Modification Recorded Investment	$ 0	$ 0
Commercial and industrial \| Non-owner occupied commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	2	0
Pre-Modification Recorded Investment	$ 7,850	$ 0
Post-Modification Recorded Investment	$ 7,850	$ 0
Commercial and industrial \| Real estate construction
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre-Modification Recorded Investment	$ 0	$ 0
Post-Modification Recorded Investment	$ 0	$ 0
Agricultural and agricultural real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre-Modification Recorded Investment	$ 0	$ 0
Post-Modification Recorded Investment	$ 0	$ 0
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	2
Pre-Modification Recorded Investment	$ 0	$ 92
Post-Modification Recorded Investment	$ 0	$ 98
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Pre-Modification Recorded Investment	$ 0	$ 0
Post-Modification Recorded Investment	$ 0	$ 0

LOANS (Troubled Debt Restructured Loans with Payment Default) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	1
Recorded Investment \| $	$ 0	$ 232
Commercial and industrial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Recorded Investment \| $	$ 0	$ 0
Commercial and industrial \| Paycheck Protection Program ("PPP")
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Recorded Investment \| $	$ 0	$ 0
Commercial and industrial \| Owner occupied commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Recorded Investment \| $	$ 0	$ 0
Commercial and industrial \| Non-owner occupied commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Recorded Investment \| $	$ 0	$ 0
Commercial and industrial \| Real estate construction
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Recorded Investment \| $	$ 0	$ 0
Agricultural and agricultural real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Recorded Investment \| $	$ 0	$ 0
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	1
Recorded Investment \| $	$ 0	$ 232
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans \| loan	0	0
Recorded Investment \| $	$ 0	$ 0

LOANS (Loans by Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Year 1	$ 3,398,505	$ 3,119,680
Year 2	1,480,531	1,842,640
Year 3	1,234,564	1,287,023
Year 4	751,481	842,221
Year 5	586,363	485,454
Year 6 and prior	1,134,111	1,254,784
Revolving	1,369,017	1,191,249
Total	9,954,572	10,023,051
Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	3,279,966	2,847,203
Year 2	1,391,907	1,649,219
Year 3	1,116,618	1,131,756
Year 4	617,337	727,712
Year 5	522,707	408,380
Year 6 and prior	978,672	1,091,908
Revolving	1,306,109	1,084,202
Total	9,213,316	8,940,380
Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	41,994	129,037
Year 2	49,038	141,385
Year 3	63,780	80,970
Year 4	96,879	58,813
Year 5	24,388	44,512
Year 6 and prior	62,313	76,144
Revolving	30,833	74,056
Total	369,225	604,917
Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	76,545	143,440
Year 2	39,586	52,036
Year 3	54,166	74,297
Year 4	37,265	55,696
Year 5	39,268	32,562
Year 6 and prior	93,126	86,732
Revolving	32,075	32,991
Total	372,031	477,754
Commercial and industrial \| Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Year 1	635,180	622,451
Year 2	378,714	381,759
Year 3	229,560	197,442
Year 4	106,439	245,675
Year 5	181,939	118,180
Year 6 and prior	357,122	359,845
Revolving	756,131	609,447
Total	2,645,085	2,534,799
Commercial and industrial \| Commercial and industrial \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	604,659	557,853
Year 2	359,533	340,809
Year 3	203,960	168,873
Year 4	89,694	215,696
Year 5	171,709	101,010
Year 6 and prior	330,094	337,834
Revolving	708,525	541,627
Total	2,468,174	2,263,702
Commercial and industrial \| Commercial and industrial \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	10,633	41,574
Year 2	12,790	24,676
Year 3	12,550	19,672
Year 4	8,210	14,262
Year 5	3,611	8,072
Year 6 and prior	14,976	2,474
Revolving	24,626	49,432
Total	87,396	160,162
Commercial and industrial \| Commercial and industrial \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	19,888	23,024
Year 2	6,391	16,274
Year 3	13,050	8,897
Year 4	8,535	15,717
Year 5	6,619	9,098
Year 6 and prior	12,052	19,537
Revolving	22,980	18,388
Total	89,515	110,935
Commercial and industrial \| Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment [Line Items]
Year 1	174,028	957,785
Year 2	25,855	0
Year 3	0	0
Year 4	0	0
Year 5	0	0
Year 6 and prior	0	0
Revolving	0	0
Total	199,883	957,785
Commercial and industrial \| Paycheck Protection Program ("PPP") \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	146,370	880,709
Year 2	25,707	0
Year 3	0	0
Year 4	0	0
Year 5	0	0
Year 6 and prior	0	0
Revolving	0	0
Total	172,077	880,709
Commercial and industrial \| Paycheck Protection Program ("PPP") \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	10,726	22,533
Year 2	127	0
Year 3	0	0
Year 4	0	0
Year 5	0	0
Year 6 and prior	0	0
Revolving	0	0
Total	10,853	22,533
Commercial and industrial \| Paycheck Protection Program ("PPP") \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	16,932	54,543
Year 2	21	0
Year 3	0	0
Year 4	0	0
Year 5	0	0
Year 6 and prior	0	0
Revolving	0	0
Total	16,953	54,543
Commercial and industrial \| Owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Year 1	956,677	431,921
Year 2	362,777	392,687
Year 3	336,990	334,894
Year 4	194,246	202,428
Year 5	144,086	124,531
Year 6 and prior	209,540	250,770
Revolving	36,018	39,175
Total	2,240,334	1,776,406
Commercial and industrial \| Owner occupied commercial real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	940,043	400,662
Year 2	328,052	369,401
Year 3	315,497	300,242
Year 4	180,936	167,470
Year 5	115,142	107,234
Year 6 and prior	189,647	213,780
Revolving	34,233	33,759
Total	2,103,550	1,592,548
Commercial and industrial \| Owner occupied commercial real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	4,676	15,345
Year 2	13,956	13,764
Year 3	7,759	22,488
Year 4	10,501	20,811
Year 5	15,032	8,717
Year 6 and prior	6,830	15,282
Revolving	35	4,311
Total	58,789	100,718
Commercial and industrial \| Owner occupied commercial real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	11,958	15,914
Year 2	20,769	9,522
Year 3	13,734	12,164
Year 4	2,809	14,147
Year 5	13,912	8,580
Year 6 and prior	13,063	21,708
Revolving	1,750	1,105
Total	77,995	83,140
Commercial and industrial \| Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Year 1	630,444	388,447
Year 2	282,814	481,561
Year 3	373,109	353,464
Year 4	269,649	229,871
Year 5	170,947	138,171
Year 6 and prior	254,459	299,885
Revolving	29,169	30,082
Total	2,010,591	1,921,481
Commercial and industrial \| Non-owner occupied commercial real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	609,968	334,722
Year 2	263,093	411,301
Year 3	315,815	305,456
Year 4	236,823	194,101
Year 5	152,059	108,070
Year 6 and prior	166,792	233,153
Revolving	28,728	24,466
Total	1,773,278	1,611,269
Commercial and industrial \| Non-owner occupied commercial real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	4,754	22,826
Year 2	9,109	55,225
Year 3	35,496	24,718
Year 4	29,227	18,724
Year 5	4,865	20,954
Year 6 and prior	35,901	45,672
Revolving	0	5,114
Total	119,352	193,233
Commercial and industrial \| Non-owner occupied commercial real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	15,722	30,899
Year 2	10,612	15,035
Year 3	21,798	23,290
Year 4	3,599	17,046
Year 5	14,023	9,147
Year 6 and prior	51,766	21,060
Revolving	441	502
Total	117,961	116,979
Commercial and industrial \| Real estate construction
Financing Receivable, Recorded Investment [Line Items]
Year 1	383,987	313,926
Year 2	207,787	339,097
Year 3	171,797	161,610
Year 4	62,987	12,957
Year 5	7,163	7,048
Year 6 and prior	7,877	5,856
Revolving	14,521	22,726
Total	856,119	863,220
Commercial and industrial \| Real estate construction \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	381,283	311,625
Year 2	206,879	309,678
Year 3	169,606	157,171
Year 4	14,197	12,625
Year 5	7,163	6,954
Year 6 and prior	7,823	5,110
Revolving	14,507	21,431
Total	801,458	824,594
Commercial and industrial \| Real estate construction \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	2,704	2,105
Year 2	858	26,659
Year 3	2,145	2,403
Year 4	44,846	332
Year 5	0	55
Year 6 and prior	0	388
Revolving	14	1,295
Total	50,567	33,237
Commercial and industrial \| Real estate construction \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	0	196
Year 2	50	2,760
Year 3	46	2,036
Year 4	3,944	0
Year 5	0	39
Year 6 and prior	54	358
Revolving	0	0
Total	4,094	5,389
Agricultural and agricultural real estate
Financing Receivable, Recorded Investment [Line Items]
Year 1	230,447	209,481
Year 2	113,515	114,190
Year 3	57,525	94,722
Year 4	51,008	48,458
Year 5	25,274	25,058
Year 6 and prior	46,445	50,805
Revolving	229,539	171,812
Total	753,753	714,526
Agricultural and agricultural real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	217,179	171,578
Year 2	102,030	90,944
Year 3	47,927	62,349
Year 4	32,913	39,252
Year 5	22,029	17,626
Year 6 and prior	35,548	37,696
Revolving	220,065	148,456
Total	677,691	567,901
Agricultural and agricultural real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	4,018	20,500
Year 2	10,390	16,202
Year 3	4,688	8,854
Year 4	2,270	2,448
Year 5	33	3,515
Year 6 and prior	2,038	3,157
Revolving	2,948	12,282
Total	26,385	66,958
Agricultural and agricultural real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	9,250	17,403
Year 2	1,095	7,044
Year 3	4,910	23,519
Year 4	15,825	6,758
Year 5	3,212	3,917
Year 6 and prior	8,859	9,952
Revolving	6,526	11,074
Total	49,677	79,667
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Year 1	317,748	157,983
Year 2	88,298	104,389
Year 3	51,922	123,549
Year 4	57,542	86,958
Year 5	45,492	67,478
Year 6 and prior	238,264	265,518
Revolving	30,017	34,567
Total	829,283	840,442
Residential real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	311,292	153,017
Year 2	86,355	99,440
Year 3	50,762	118,854
Year 4	53,773	83,534
Year 5	43,619	63,477
Year 6 and prior	230,566	244,852
Revolving	29,017	33,467
Total	805,384	796,641
Residential real estate \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	3,928	3,986
Year 2	1,499	4,507
Year 3	750	2,188
Year 4	1,452	1,896
Year 5	734	3,117
Year 6 and prior	1,977	8,525
Revolving	1,000	0
Total	11,340	24,219
Residential real estate \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	2,528	980
Year 2	444	442
Year 3	410	2,507
Year 4	2,317	1,528
Year 5	1,139	884
Year 6 and prior	5,721	12,141
Revolving	0	1,100
Total	12,559	19,582
Consumer
Financing Receivable, Recorded Investment [Line Items]
Year 1	69,994	37,686
Year 2	20,771	28,957
Year 3	13,661	21,342
Year 4	9,610	15,874
Year 5	11,462	4,988
Year 6 and prior	20,404	22,105
Revolving	273,622	283,440
Total	419,524	414,392
Consumer \| Pass
Financing Receivable, Recorded Investment [Line Items]
Year 1	69,172	37,037
Year 2	20,258	27,646
Year 3	13,051	18,811
Year 4	9,001	15,034
Year 5	10,986	4,009
Year 6 and prior	18,202	19,483
Revolving	271,034	280,996
Total	411,704	403,016
Consumer \| Watch
Financing Receivable, Recorded Investment [Line Items]
Year 1	555	168
Year 2	309	352
Year 3	392	647
Year 4	373	340
Year 5	113	82
Year 6 and prior	591	646
Revolving	2,210	1,622
Total	4,543	3,857
Consumer \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Year 1	267	481
Year 2	204	959
Year 3	218	1,884
Year 4	236	500
Year 5	363	897
Year 6 and prior	1,611	1,976
Revolving	378	822
Total	$ 3,277	$ 7,519

LOANS (Not Covered by Share Agreements (Past Due Financing Receivables)) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	$ 9,954,572	$ 10,023,051
Nonaccrual	69,369	87,386
Financial Asset, Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	7,912	23,601
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	7,026	17,400
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	336	5,481
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	550	720
Financial Asset, Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	9,877,291	9,912,064
Commercial and industrial \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	2,645,085	2,534,799
Nonaccrual	18,228	21,762
Commercial and industrial \| Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	199,883	957,785
Nonaccrual	0	0
Commercial and industrial \| Owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	2,240,334	1,776,406
Nonaccrual	11,150	13,775
Commercial and industrial \| Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	2,010,591	1,921,481
Nonaccrual	13,316	14,661
Commercial and industrial \| Real estate construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	856,119	863,220
Nonaccrual	368	894
Commercial and industrial \| Financial Asset, Past Due \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	1,748	8,867
Commercial and industrial \| Financial Asset, Past Due \| Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	1
Commercial and industrial \| Financial Asset, Past Due \| Owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	130	2,982
Commercial and industrial \| Financial Asset, Past Due \| Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	3,929	4,817
Commercial and industrial \| Financial Asset, Past Due \| Real estate construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	288	2,542
Commercial and industrial \| 30-59 Days Past Due \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	1,024	5,825
Commercial and industrial \| 30-59 Days Past Due \| Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	1
Commercial and industrial \| 30-59 Days Past Due \| Owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	130	2,815
Commercial and industrial \| 30-59 Days Past Due \| Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	3,929	2,143
Commercial and industrial \| 30-59 Days Past Due \| Real estate construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	238	2,446
Commercial and industrial \| 60-89 Days Past Due \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	183	2,322
Commercial and industrial \| 60-89 Days Past Due \| Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Commercial and industrial \| 60-89 Days Past Due \| Owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	167
Commercial and industrial \| 60-89 Days Past Due \| Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	2,674
Commercial and industrial \| 60-89 Days Past Due \| Real estate construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	50	96
Commercial and industrial \| 90 Days or More Past Due \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	541	720
Commercial and industrial \| 90 Days or More Past Due \| Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Commercial and industrial \| 90 Days or More Past Due \| Owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Commercial and industrial \| 90 Days or More Past Due \| Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Commercial and industrial \| 90 Days or More Past Due \| Real estate construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Commercial and industrial \| Financial Asset, Not Past Due \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	2,625,109	2,504,170
Commercial and industrial \| Financial Asset, Not Past Due \| Paycheck Protection Program ("PPP")
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	199,883	957,784
Commercial and industrial \| Financial Asset, Not Past Due \| Owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	2,229,054	1,759,649
Commercial and industrial \| Financial Asset, Not Past Due \| Non-owner occupied commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	1,993,346	1,902,003
Commercial and industrial \| Financial Asset, Not Past Due \| Real estate construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	855,463	859,784
Agricultural and agricultural real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	753,753	714,526
Nonaccrual	15,686	18,688
Agricultural and agricultural real estate \| Financial Asset, Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	687	1,688
Agricultural and agricultural real estate \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	687	1,688
Agricultural and agricultural real estate \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Agricultural and agricultural real estate \| 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Agricultural and agricultural real estate \| Financial Asset, Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	737,380	694,150
Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	829,283	840,442
Nonaccrual	9,167	13,637
Residential real estate \| Financial Asset, Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	822	1,758
Residential real estate \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	767	1,675
Residential real estate \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	46	83
Residential real estate \| 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	9	0
Residential real estate \| Financial Asset, Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	819,294	825,047
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	419,524	414,392
Nonaccrual	1,454	3,969
Consumer \| Financial Asset, Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	308	946
Consumer \| 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	251	807
Consumer \| 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	57	139
Consumer \| 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	0	0
Consumer \| Financial Asset, Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held to maturity	$ 417,762	$ 409,477

LOANS - Schedule of Financing Receivables Purchased with Credit Deterioration (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	$ 393,211
Allowance for Credit Losses	(12,313)
Premium/ (Discount)	(2,978)
Book Value	377,920
Commercial and industrial \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	81,917
Allowance for Credit Losses	(1,707)
Premium/ (Discount)	170
Book Value	80,380
Commercial and industrial \| Paycheck Protection Program ("PPP")
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	0
Allowance for Credit Losses	0
Premium/ (Discount)	0
Book Value	0
Commercial and industrial \| Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	74,854
Allowance for Credit Losses	(1,205)
Premium/ (Discount)	(56)
Book Value	73,593
Commercial and industrial \| Non-owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	134,135
Allowance for Credit Losses	(6,465)
Premium/ (Discount)	(3,150)
Book Value	124,520
Commercial and industrial \| Real estate construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	19,405
Allowance for Credit Losses	(603)
Premium/ (Discount)	360
Book Value	19,162
Agricultural and agricultural real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	54,584
Allowance for Credit Losses	(1,848)
Premium/ (Discount)	(413)
Book Value	52,323
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	25,556
Allowance for Credit Losses	(410)
Premium/ (Discount)	94
Book Value	25,240
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchase Price	2,760
Allowance for Credit Losses	(75)
Premium/ (Discount)	17
Book Value	$ 2,702

LOANS (Related Parties Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance at beginning of year	$ 215,449	$ 184,568
Advances	69,204	73,412
Repayments	(90,776)	(42,531)
Balance at end of year	$ 193,877	$ 215,449

ALLOWANCE FOR CREDIT LOSSES (Change in Allowance For Credit Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	$ 131,606	$ 70,395	$ 61,963
Allowance for purchased credit deteriorated loans	0	12,313
Provision (benefit) for credit losses	(17,706)	65,745	16,657
Recoveries on loans previously charged-off	4,931	3,804	5,365
Charge-offs on loans	(8,743)	(32,722)	(13,590)
Balance at end of year	$ 110,088	$ 131,606	$ 70,395

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ References + Details

ALLOWANCE FOR CREDIT LOSSES (Allowance for Credit Losses by Loan Category) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	$ 131,606	$ 70,395	$ 61,963
Purchased Credit Deteriorated Allowance	0	12,313
Charge-offs on loans	(8,743)	(32,722)	(13,590)
Recoveries	4,931	3,804	5,365
Provision (Benefit)	(17,706)	65,745	16,657
Balance at end of year	110,088	131,606	70,395
Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	0	12,071
Balance at end of year		0	12,071
Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	131,606	82,466
Purchased Credit Deteriorated Allowance		12,313
Charge-offs on loans		(32,722)
Recoveries		3,804
Provision (Benefit)		65,745
Balance at end of year		131,606	82,466
Agricultural and agricultural real estate \| Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		(387)
Balance at end of year			(387)
Agricultural and agricultural real estate \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		5,293
Purchased Credit Deteriorated Allowance		1,848
Balance at end of year			5,293
Residential real estate \| Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		4,817
Balance at end of year			4,817
Residential real estate \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		6,321
Purchased Credit Deteriorated Allowance		410
Balance at end of year			6,321
Consumer \| Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		4,309
Balance at end of year			4,309
Consumer \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		9,131
Purchased Credit Deteriorated Allowance		75
Balance at end of year			9,131
Commercial and industrial \| Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	38,818	34,207
Balance at end of year	27,738	38,818	34,207
Commercial and industrial \| Commercial and industrial \| Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		(272)
Balance at end of year			(272)
Commercial and industrial \| Commercial and industrial \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		33,935
Purchased Credit Deteriorated Allowance		1,707
Charge-offs on loans	(2,150)	(14,974)
Recoveries	3,058	1,277
Provision (Benefit)	(11,988)	16,873
Balance at end of year			33,935
Commercial and industrial \| Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	20,001	7,921
Balance at end of year	19,214	20,001	7,921
Commercial and industrial \| Owner occupied commercial real estate \| Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		(114)
Balance at end of year			(114)
Commercial and industrial \| Owner occupied commercial real estate \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		7,807
Purchased Credit Deteriorated Allowance		1,205
Charge-offs on loans	(296)	(13,671)
Recoveries	152	205
Provision (Benefit)	(643)	24,455
Balance at end of year			7,807
Commercial and industrial \| Non-owner occupied commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	20,873	7,584
Balance at end of year	17,908	20,873	7,584
Commercial and industrial \| Non-owner occupied commercial real estate \| Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		(2,617)
Balance at end of year			(2,617)
Commercial and industrial \| Non-owner occupied commercial real estate \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		4,967
Purchased Credit Deteriorated Allowance		6,465
Charge-offs on loans	(1,637)	(45)
Recoveries	33	30
Provision (Benefit)	(1,361)	9,456
Balance at end of year			4,967
Commercial and industrial \| Real estate construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	20,080	8,677
Balance at end of year	22,538	20,080	8,677
Commercial and industrial \| Real estate construction \| Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		6,335
Balance at end of year			6,335
Commercial and industrial \| Real estate construction \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year		15,012
Purchased Credit Deteriorated Allowance		603
Charge-offs on loans	(10)	(105)
Recoveries	10	220
Provision (Benefit)	2,458	4,350
Balance at end of year			15,012
Agricultural and agricultural real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	7,129	5,680
Balance at end of year	5,213	7,129	5,680
Agricultural and agricultural real estate \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs on loans	(1,902)	(1,201)
Recoveries	531	971
Provision (Benefit)	(545)	218
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	11,935	1,504
Balance at end of year	8,427	11,935	1,504
Residential real estate \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs on loans	(181)	(515)
Recoveries	13	108
Provision (Benefit)	(3,340)	5,611
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of year	12,770	4,822
Balance at end of year	9,050	12,770	$ 4,822
Consumer \| Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Charge-offs on loans	(2,567)	(2,211)
Recoveries	1,134	993
Provision (Benefit)	$ (2,287)	$ 4,782

ALLOWANCE FOR CREDIT LOSSES (Change in Allowance for Credit Losses on Unfunded Commitments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 15,280	$ 248
Provision (benefit)	182	1,428
Ending balance	15,462	15,280
Impact of ASU 2016-13 adoption
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	0	13,604
Ending balance		0
Adjusted balance
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 15,280	13,852
Ending balance		$ 15,280

PREMISES, FURNITURE AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total	$ 309,582	$ 324,100
Less accumulated depreciation	(104,583)	(104,505)
Premises, furniture and equipment, net	204,999	219,595
Depreciation expense	13,500	11,800	$ 12,000
Land and land improvements
Property, Plant and Equipment [Line Items]
Total	59,195	61,930
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Total	177,296	192,702
Depreciation expense	6,900	6,500	6,200
Furniture and equipment
Property, Plant and Equipment [Line Items]
Total	73,091	69,468
Depreciation expense	$ 6,600	$ 5,300	$ 5,800

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 04, 2020
Goodwill [Line Items]
Goodwill resulting from acquisition	$ 576,005,000	$ 576,005,000
Goodwill, impairment loss	$ 0
AimBank
Goodwill [Line Items]
Goodwill resulting from acquisition			$ 91,400,000
AimBank \| Core Deposit Intangibles
Goodwill [Line Items]
Recognized intangibles			3,100,000
Intangibles amortization period	10 years
Johnson Bank
Goodwill [Line Items]
Goodwill resulting from acquisition			38,400,000
Johnson Bank \| Core Deposit Intangibles
Goodwill [Line Items]
Recognized intangibles			$ 1,300,000
Intangibles amortization period	10 years

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS (Carrying Amount of Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 122,206	$ 120,684
Accumulated Amortization	82,328	72,249
Net Carrying Amount	39,878	48,435
Core Deposit Intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	101,185	101,185
Accumulated Amortization	68,330	58,970
Net Carrying Amount	32,855	42,215
Customer Relationship Intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,177	1,177
Accumulated Amortization	1,044	1,009
Net Carrying Amount	133	168
Mortgage Servicing Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,790	11,268
Accumulated Amortization	6,378	6,079
Net Carrying Amount	6,412	5,189
Commercial Servicing Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,054	7,054
Accumulated Amortization	6,576	6,191
Net Carrying Amount	$ 478	$ 863

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS (Mortgage and Commercial Loans Servicing Narrative) (Details)	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Valuation servicing rights in tranches [Line Items]
Mortgage loans serviced for others	$ 723,300,000	$ 743,300,000
Custodial escrow balances maintained	4,500,000	5,700,000
Servicing rights, net	6,890,000	6,052,000
Mortgage Servicing Rights
Valuation servicing rights in tranches [Line Items]
Fair value of mortgage servicing rights	6,412,000	5,189,000
Fees collected for servicing of mortgage loans	$ 1,800,000	$ 1,700,000	$ 4,900,000
Mortgage Servicing Rights \| Minimum
Valuation servicing rights in tranches [Line Items]
Prepayment rate (as a percent)	13.40%
Discount rate	9.02%	9.02%
Mortgage Servicing Rights \| Minimum \| Measurement Input, Cap Rate
Valuation servicing rights in tranches [Line Items]
Average capitalization rate (percent)	0.0076	0.0076
Mortgage Servicing Rights \| Maximum \| Measurement Input, Cap Rate
Valuation servicing rights in tranches [Line Items]
Average capitalization rate (percent)	0.0120	0.0116
Mortgage Servicing Rights \| First Bank & Trust
Valuation servicing rights in tranches [Line Items]
Prepayment rate (as a percent)		16.20%
Commercial Servicing Rights
Valuation servicing rights in tranches [Line Items]
Fair value of mortgage servicing rights	$ 782,000	$ 1,288,000
Fees collected for servicing of mortgage loans	536,000	879,000
Servicing rights, net	$ 45,400,000	$ 66,200,000
Commercial Servicing Rights \| Measurement Input, Cap Rate
Valuation servicing rights in tranches [Line Items]
Average capitalization rate (percent)	0
Commercial Servicing Rights \| Minimum
Valuation servicing rights in tranches [Line Items]
Prepayment rate (as a percent)	12.52%	14.95%
Discount rate	9.20%	7.70%
Commercial Servicing Rights \| Minimum \| Measurement Input, Cap Rate
Valuation servicing rights in tranches [Line Items]
Average capitalization rate (percent)		0.0310
Commercial Servicing Rights \| Maximum
Valuation servicing rights in tranches [Line Items]
Prepayment rate (as a percent)	16.88%	19.25%
Discount rate	10.66%	12.88%
Commercial Servicing Rights \| Maximum \| Measurement Input, Cap Rate
Valuation servicing rights in tranches [Line Items]
Average capitalization rate (percent)	0.0445	0.0445
Commercial Servicing Rights less than 20 Years
Valuation servicing rights in tranches [Line Items]
Fair value of mortgage servicing rights	$ 98,000	$ 203,000
Servicing rights, term	20 years
Servicing rights, valuation allowance	$ 0	0
Amortization period	20 years
Commercial Servicing Rights more than 20 Years
Valuation servicing rights in tranches [Line Items]
Fair value of mortgage servicing rights	$ 684,000	1,085,000
Servicing rights, term	20 years
Servicing rights, valuation allowance	$ 0	$ 0
Amortization period		20 years
Mortgage Servicing Rights 15-year Tranche
Valuation servicing rights in tranches [Line Items]
Fair value of mortgage servicing rights	1,280,000	$ 1,100,000
Servicing rights, valuation allowance	$ 327,000	$ 422,000
Amortization period	15 years	15 years
Mortgage Servicing Rights 30-year Tranche
Valuation servicing rights in tranches [Line Items]
Fair value of mortgage servicing rights	$ 5,132,000	$ 4,089,000
Servicing rights, valuation allowance	$ 1,331,000	$ 1,356,000
Amortization period	30 years	30 years

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS (Estimated Future Amortization Expense for Amortizable Intangible Assets) (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Year ending December 31,
2022	$ 9,510
2023	8,273
2024	6,855
2025	5,743
2026	8,810
Thereafter	687
Total	39,878
Core Deposit Intangibles
Year ending December 31,
2022	7,702
2023	6,739
2024	5,591
2025	4,700
2026	8,123
Thereafter	0
Total	32,855
Customer Relationship Intangible
Year ending December 31,
2022	34
2023	34
2024	33
2025	32
2026	0
Thereafter	0
Total	133
Mortgage Servicing Rights
Year ending December 31,
2022	1,603
2023	1,374
2024	1,145
2025	916
2026	687
Thereafter	687
Total	6,412
Commercial Servicing Rights
Year ending December 31,
2022	171
2023	126
2024	86
2025	95
2026	0
Thereafter	0
Total	$ 478

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS (Changes in Capitalized Mortgage and Commercial Servicing Rights) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Mortgage Servicing Rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	$ 5,189	$ 5,621
Originations	1,522	3,383
Amortization	(1,387)	(2,037)
Valuation allowance on servicing rights	1,088	(1,778)
Balance at end of period	6,412	5,189
Fair value of mortgage servicing rights	$ 6,412	$ 5,189
Servicing rights, net to servicing portfolio (as a percent)	0.89%	0.70%
Commercial Servicing Rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	$ 863	$ 1,115
Originations	0	102
Amortization	(385)	(354)
Balance at end of period	478	863
Fair value of mortgage servicing rights	$ 782	$ 1,288
Servicing rights, net to servicing portfolio (as a percent)	1.05%	1.30%

GOODWILL, CORE DEPOSIT INTANGIBLES AND OTHER INTANGIBLE ASSETS (Book Value, Fair Value, and Valuation Allowance of Mortgage and Commercial Servicing Rights) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Mortgage Servicing Rights 15-year Tranche
Finite-Lived Intangible Assets [Line Items]
Book Value	$ 1,607,000	$ 1,522,000
Fair Value	1,280,000	1,100,000
Impairment	327,000	422,000
Mortgage Servicing Rights 30-year Tranche
Finite-Lived Intangible Assets [Line Items]
Book Value	6,463,000	5,445,000
Fair Value	5,132,000	4,089,000
Impairment	1,331,000	1,356,000
Commercial Servicing Rights less than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	45,000	87,000
Fair Value	98,000	203,000
Impairment	0	0
Commercial Servicing Rights more than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	433,000	776,000
Fair Value	684,000	1,085,000
Impairment	$ 0	$ 0

DEPOSITS (Scheduled Maturities of Time Certificates of Deposit) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deposits [Abstract]
2022	$ 795,813
2023	146,326
2024	39,435
2025	17,490
2026	15,458
Thereafter	9,498
Total	1,024,020	$ 1,271,391
Time deposits, $100,000 or more	605,200	774,200
Time deposits over $250,000	$ 333,700	$ 423,300

DEPOSITS (Interest Expense on Deposits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deposits [Abstract]
Savings and money market accounts	$ 9,063	$ 16,560	$ 47,069
Time certificates of deposit in denominations of $100,000 or more	3,463	8,244	9,344
Other time deposits	2,271	5,483	7,321
Interest expense on deposits	14,797	$ 30,287	$ 63,734
Uninsured deposits	$ 8,210,000

SHORT-TERM BORROWINGS (Summary of Short-term Borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Short-term borrowings	$ 131,597	$ 167,872
Retail repurchase agreements
Short-term Debt [Line Items]
Short-term borrowings	122,996	118,293
Federal funds purchased
Short-term Debt [Line Items]
Short-term borrowings	0	2,100
Advances from the federal discount window
Short-term Debt [Line Items]
Short-term borrowings	0	35,000
Other short-term borrowings
Short-term Debt [Line Items]
Short-term borrowings	$ 8,601	$ 12,479

SHORT-TERM BORROWINGS (Narrative) (Details)	12 Months Ended
SHORT-TERM BORROWINGS (Narrative) (Details)	Dec. 31, 2021 USD ($) creditLine	Dec. 31, 2020 USD ($)
Short-term Debt [Line Items]
Number of credit lines \| creditLine	1
Borrowing capacity	$ 100,000,000
Short-term borrowings	131,597,000	$ 167,872,000
Remaining borrowing capacity	895,600,000
Retail Repurchase Agreements
Short-term Debt [Line Items]
Short-term borrowings	$ 122,996,000	$ 118,293,000
Debt term	12 months	12 months
Advances from the federal discount window
Short-term Debt [Line Items]
Short-term borrowings	$ 0	$ 35,000,000
Pledged securities	1,660,000,000
Pledged commercial loans	235,500,000
Remaining borrowing capacity	895,600,000
Nonrevolving Credit Facility
Short-term Debt [Line Items]
Short-term borrowings	0	0
Remaining borrowing capacity	3,500,000
Nonrevolving Credit Facility
Short-term Debt [Line Items]
Borrowing capacity	25,000,000
Revolving Credit Facility
Short-term Debt [Line Items]
Borrowing capacity	75,000,000
Short-term borrowings	$ 0	$ 0

SHORT-TERM BORROWINGS (Balances and Rates) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Maximum month-end balance	$ 299,457	$ 380,360	$ 226,096
Average month-end balance	$ 173,556	$ 157,348	$ 128,098
Weighted average interest rate for the year	0.26%	0.39%	1.38%
Weighted average interest rate at year-end	0.19%	0.18%	1.21%

OTHER BORROWINGS (Schedule of Other Borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt	$ 372,072	$ 457,042
Advances from the FHLB
Debt Instrument [Line Items]
Weighted average interest rate	3.03%
Long-term debt	$ 898	1,018
Paycheck Protection Program Liquidity Fund
Debt Instrument [Line Items]
Long-term debt	0	188,872
Trust preferred securities
Debt Instrument [Line Items]
Long-term debt	147,316	146,323
Note payable to unaffiliated bank
Debt Instrument [Line Items]
Long-term debt	0	44,417
Contracts payable for purchase of real estate and other assets
Debt Instrument [Line Items]
Long-term debt	1,593	1,983
Subordinated notes
Debt Instrument [Line Items]
Long-term debt	$ 222,265	$ 74,429

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References + Details

OTHER BORROWINGS (Narrative) (Details)	12 Months Ended
OTHER BORROWINGS (Narrative) (Details)	Dec. 31, 2021 USD ($) subsidiary	Sep. 08, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 17, 2014 USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 372,072,000		$ 457,042,000
Remaining borrowing capacity	895,600,000
FHLB stock, required collateral	8,500,000		13,600,000
Additional collateral, aggregate fair value	4,430,000,000		4,960,000,000
FHLB borrowing capacity	$ 913,500,000
Number of wholly-owned trust subsidiaries that issue preferred securities \| subsidiary	15
Borrowing capacity	$ 100,000,000
Subordinated notes qualified as Tier 2 capital	222,300,000
Interest Rate Swap
Debt Instrument [Line Items]
Amount of hedged debt	0
Interest Rate Swap \| Cash Flow Hedging
Debt Instrument [Line Items]
Amount of hedged debt	40,000,000
Nonrevolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	25,000,000
Line of credit outstanding	0
Available borrowings	3,500,000
Nonrevolving Credit Facility \| Interest Rate Swap \| Designated as Hedging Instrument \| Cash Flow Hedging
Debt Instrument [Line Items]
Amount of hedged debt	0		44,400,000
Tier 2
Debt Instrument [Line Items]
Subordinated notes qualified as Tier 2 capital	177,500,000
Paycheck Protection Program Liquidity Fund
Debt Instrument [Line Items]
Long-term debt	0		188,872,000
Trust preferred securities
Debt Instrument [Line Items]
Long-term debt	147,316,000		146,323,000
Deferred issuance costs	44,000		74,000
Trust preferred securities \| Tier 1
Debt Instrument [Line Items]
Long-term debt	147,300,000		146,300,000
Contracts payable for purchase of real estate and other assets
Debt Instrument [Line Items]
Long-term debt	1,593,000		1,983,000
Debt issued				$ 75,000,000
Debt discount				$ 1,100,000
Stated interest rate (as a percent)				5.75%
Contracts payable for purchase of real estate and other assets \| Subordinated Notes 2021
Debt Instrument [Line Items]
Deferred issuance costs	$ 494,000
Debt issued		$ 150,000,000
Debt discount		$ 1,900,000
Stated interest rate (as a percent)	2.75%	2.75%
Basis spread on variable rate (as a percent)	2.10%
Contracts payable for purchase of real estate and other assets \| Other Assets
Debt Instrument [Line Items]
Unamortized debt issuance expense	$ 114,000		$ 151,000

OTHER BORROWINGS (Trust Preferred Offerings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Less: deferred issuance costs	$ (44)
Total	372,072	$ 457,042
Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	147,360
Total	147,316	$ 146,323
Heartland Financial Statutory Trust IV \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 10,310
Interest rate (as a percent)	2.97%
Heartland Financial Statutory Trust V \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 20,619
Interest rate (as a percent)	1.45%
Heartland Financial Statutory Trust VI \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 20,619
Interest rate (as a percent)	1.68%
Heartland Financial Statutory Trust VII \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 18,042
Interest rate (as a percent)	1.65%
Morrill Statutory Trust I \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 9,276
Interest rate (as a percent)	3.47%
Morrill Statutory Trust II \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 8,976
Interest rate (as a percent)	3.07%
Sheboygan Statutory Trust I \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 6,703
Interest rate (as a percent)	3.17%
CBNM Capital Trust I \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 4,508
Interest rate (as a percent)	3.45%
Citywide Capital Trust III \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 6,549
Interest rate (as a percent)	2.93%
Citywide Capital Trust IV \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 4,411
Interest rate (as a percent)	2.36%
Citywide Capital Trust V \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 12,198
Interest rate (as a percent)	1.74%
OCGI Statutory Trust III \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 3,012
Interest rate (as a percent)	3.89%
OCGI Capital Trust IV \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 5,455
Interest rate (as a percent)	2.70%
BVBC Capital Trust II \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 7,278
Interest rate (as a percent)	3.38%
BVBC Capital Trust III \| Trust preferred securities
Debt Instrument [Line Items]
Total trust preferred offerings	$ 9,404
Interest rate (as a percent)	1.82%
LIBOR \| Heartland Financial Statutory Trust IV \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.75%
LIBOR \| Heartland Financial Statutory Trust V \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.33%
LIBOR \| Heartland Financial Statutory Trust VI \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.48%
LIBOR \| Heartland Financial Statutory Trust VII \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.48%
LIBOR \| Morrill Statutory Trust I \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.25%
LIBOR \| Morrill Statutory Trust II \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.85%
LIBOR \| Sheboygan Statutory Trust I \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.95%
LIBOR \| CBNM Capital Trust I \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.25%
LIBOR \| Citywide Capital Trust III \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.80%
LIBOR \| Citywide Capital Trust IV \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.20%
LIBOR \| Citywide Capital Trust V \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.54%
LIBOR \| OCGI Statutory Trust III \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.65%
LIBOR \| OCGI Capital Trust IV \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.50%
LIBOR \| BVBC Capital Trust II \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.25%
LIBOR \| BVBC Capital Trust III \| Trust preferred securities
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.60%

OTHER BORROWINGS (Schedule of Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
2022	$ 2
2023	80
2024	74,572
2025	0
2026	0
Thereafter	297,418
Total	$ 372,072	$ 457,042

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References + Details

DERIVATIVE FINANCIAL INSTRUMENTS (Cash Collateral on Derivative Financial Instruments) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 3,800,000
Counterparties
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 0

DERIVATIVE FINANCIAL INSTRUMENTS (Estimated Cash Payments and Reclassification to Interest Expense) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Reclassification from accumulated other comprehensive income to interest expense	$ 1,400
Estimated amount to be reclassified from accumulated other comprehensive income to interest expense within the next twelve months	$ 733

DERIVATIVE FINANCIAL INSTRUMENTS (Executed Interest Rate Swap) (Details) - Interest Rate Swap	Dec. 31, 2021 USD ($)
Derivative [Line Items]
Derivative, notional amount	$ 0
Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	40,000,000
Heartland Financial Statutory Trust VI, VII \| Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	$ 40,000,000

DERIVATIVE FINANCIAL INSTRUMENTS (Balance Sheet Category and Fair Values of Derivative Instruments (Cash Flow Hedges)) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Assets
Derivatives, Fair Value [Line Items]
Notional Amount		$ 9,198
Other Assets \| Interest Rate Swap due May 10, 2021
Derivatives, Fair Value [Line Items]
Notional Amount		21,667
Fair Value		$ (91)
Receive Rate		2.649%
Weighted Average Pay Rate		3.674%
Other Liabilities
Derivatives, Fair Value [Line Items]
Notional Amount	$ 7,496
Other Liabilities \| Interest Rate Swap due March 17, 2021
Derivatives, Fair Value [Line Items]
Notional Amount		$ 25,000
Fair Value		$ (127)
Receive Rate		0.229%
Weighted Average Pay Rate		2.255%
Other Liabilities \| Interest Rate Swap Due July 24, 2028
Derivatives, Fair Value [Line Items]
Notional Amount		$ 22,750
Fair Value		$ (2,220)
Receive Rate		2.643%
Weighted Average Pay Rate		5.425%
Other Liabilities \| Interest Rate Swap due June 15, 2024
Derivatives, Fair Value [Line Items]
Notional Amount		$ 20,000
Fair Value		$ (1,482)
Receive Rate		0.217%
Weighted Average Pay Rate		2.39%
Other Liabilities \| Interest Rate Swap due March 1, 2024
Derivatives, Fair Value [Line Items]
Notional Amount		$ 20,000
Fair Value		$ (1,385)
Receive Rate		0.225%
Weighted Average Pay Rate		2.352%
Other Liabilities \| Interest Rate Swap Due June 15, 2021
Derivatives, Fair Value [Line Items]
Notional Amount		$ 6,000
Fair Value		$ (50)
Receive Rate		0.217%
Weighted Average Pay Rate		1.866%
Other Liabilities \| Interest Rate Swap Due June 30, 2021
Derivatives, Fair Value [Line Items]
Notional Amount		$ 3,000
Fair Value		$ (25)
Receive Rate		0.241%
Weighted Average Pay Rate		1.878%

DERIVATIVE FINANCIAL INSTRUMENTS (Gains (Losses) Recognized on Derivatives (Cash Flow Hedges)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Trading Activity, Gains and Losses, Net [Line Items]
Gain (loss) recognized in other comprehensive income on interest rate swaps	$ 5,037	$ (904)	$ (3,639)
Gain (loss) reclassified from accumulated other comprehensive income into income (expense) on interest rate swaps	(1,601)	(1,820)	$ 170
Interest Rate Swap
Trading Activity, Gains and Losses, Net [Line Items]
Gain (loss) recognized in other comprehensive income on interest rate swaps	5,380	(2,698)
Interest Expense [Member] \| Interest Rate Swap
Trading Activity, Gains and Losses, Net [Line Items]
Gain (loss) reclassified from accumulated other comprehensive income into income (expense) on interest rate swaps	$ (1,403)	$ (1,794)

DERIVATIVE FINANCIAL INSTRUMENTS (Fair Value Hedge) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 3,800
Fair Value Hedging
Derivative [Line Items]
Notional Amount	16,755	20,841
Fair Value Hedging \| Interest Income
Derivative [Line Items]
Gain (loss) recognized in interest income on fair value hedges	1,272	(1,227)
Fair Value Hedging \| Other Liabilities
Derivative [Line Items]
Fair Value	(1,208)	(2,480)
Fair Value Hedging \| Interest Rate Swap
Derivative [Line Items]
Cash pledged as collateral	$ 3,800	$ 4,200

DERIVATIVE FINANCIAL INSTRUMENTS (Balance Sheet Category and Fair Values of Embedded Derivatives) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Nonoperating Income (Expense)
Derivative [Line Items]
Embedded derivatives	$ (997)	$ 215
Other Assets
Derivative [Line Items]
Notional Amount		9,198
Fair Value		680
Embedded Derivative, Fair Value of Embedded Derivative Asset		$ (680)
Other Liabilities
Derivative [Line Items]
Notional Amount	7,496
Fair Value	317
Embedded Derivative, Fair Value of Embedded Derivative Asset	$ (317)

DERIVATIVE FINANCIAL INSTRUMENTS (Loan Swaps) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 3,800,000
Other Assets
Derivative [Line Items]
Notional Amount		9,198,000
Other Liabilities
Derivative [Line Items]
Notional Amount	7,496,000
Counterparties
Derivative [Line Items]
Cash pledged as collateral	0	0
Back-to-back Swaps
Derivative [Line Items]
Cash pledged as collateral	24,100,000	46,500,000
Back-to-back Swaps \| Other Assets
Derivative [Line Items]
Notional Amount	463,069,000	440,719,000
Fair Value	$ 23,574,000	$ 43,422,000
Back-to-back Swaps \| Other Assets \| Weighted Average Receive Rate
Derivative [Line Items]
Weighted Average Rate	4.44%	4.46%
Back-to-back Swaps \| Other Assets \| Weighted Average Pay Rate
Derivative [Line Items]
Weighted Average Rate	2.35%	2.46%
Back-to-back Swaps \| Other Liabilities
Derivative [Line Items]
Notional Amount	$ 463,069,000	$ 440,719,000
Fair Value	$ (23,574,000)	$ (43,422,000)
Back-to-back Swaps \| Other Liabilities \| Weighted Average Receive Rate
Derivative [Line Items]
Weighted Average Rate	2.35%	2.46%
Back-to-back Swaps \| Other Liabilities \| Weighted Average Pay Rate
Derivative [Line Items]
Weighted Average Rate	4.44%	4.46%
Back-to-back Swaps \| Counterparties
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 0

DERIVATIVE FINANCIAL INSTRUMENTS (Balance Sheet Category and Fair Values of Derivative Instruments (Not Designated as Hedging Instruments)) (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	$ 0	$ 3,800,000
Counterparties
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	0	0
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	0
Not Designated as Hedging Instrument \| Other Assets \| Interest rate lock commitments (mortgage)
Assets
Notional Amount, Asset	37,046,000	42,078,000
Fair Value	(1,306,000)	(1,827,000)
Not Designated as Hedging Instrument \| Other Assets \| Forward commitments
Assets
Notional Amount, Asset	19,000,000	0
Fair Value	(32,000)	0
Not Designated as Hedging Instrument \| Other Assets \| Undesignated interest rate swaps
Liabilities
Notional Amount	7,496,000
Fair Value	317,000
Not Designated as Hedging Instrument \| Other Liabilities \| Forward commitments
Liabilities
Notional Amount	35,500,000	86,500,000
Fair Value	95,000	697,000
Not Designated as Hedging Instrument \| Other Liabilities \| Undesignated interest rate swaps
Assets
Notional Amount, Asset		9,198,000
Fair Value		(680,000)
Not Designated as Hedging Instrument \| Counterparties
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	$ 0	$ 0

DERIVATIVE FINANCIAL INSTRUMENTS (Derivative Instruments Gains and Losses Recognized (Not Designated as Hedging Instruments)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Gain on Sale Of Loans Held For Sale \| Interest rate lock commitments (mortgage)
Trading Activity, Gains and Losses, Net [Line Items]
Year-to-date gain (loss) recognized	$ (2,345)	$ 2,803
Gain on Sale Of Loans Held For Sale \| Forward commitments
Trading Activity, Gains and Losses, Net [Line Items]
Year-to-date gain (loss) recognized	32	(15)
Gain on Sale Of Loans Held For Sale \| Forward commitments
Trading Activity, Gains and Losses, Net [Line Items]
Year-to-date gain (loss) recognized	602	(585)
Other Nonoperating Income (Expense) \| Undesignated interest rate swaps
Trading Activity, Gains and Losses, Net [Line Items]
Year-to-date gain (loss) recognized	$ 997	$ (215)

INCOME TAXES (Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal									$ 32,440	$ 34,513	$ 24,106
State									11,352	12,450	11,298
Total current expense									43,792	46,963	35,404
Deferred:
Federal									8,938	(8,498)	760
State									2,605	(2,412)	(1,174)
Total deferred expense (benefit)									11,543	(10,910)	(414)
Total income tax expense	$ 10,271	$ 13,250	$ 16,481	$ 15,333	$ 9,046	$ 13,681	$ 7,417	$ 5,909	$ 55,335	$ 36,053	$ 34,990

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

INCOME TAXES (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Tax effect of net unrealized loss on securities carried at fair value reflected in stockholders’ equity	$ 1,715	$ 0
Tax effect of net unrealized loss on derivatives reflected in stockholders’ equity	367	1,130
Allowance for credit losses	28,149	33,393
Deferred compensation	11,299	9,623
Net operating loss carryforwards	18,874	17,585
Investments in partnerships	958	467
Deferred loan fees	1,691	5,006
Other	5,673	5,563
Total deferred tax assets	68,726	72,767
Valuation allowance for deferred tax assets	(15,120)	(12,828)
Total deferred tax assets after valuation allowance	53,606	59,939
Deferred tax liabilities:
Tax effect of net unrealized gain on securities carried at fair value reflected in stockholders’ equity	0	26,858
Securities	1,232	635
Premises, furniture and equipment	10,502	8,311
Purchase accounting	7,977	5,326
Prepaid expenses	2,078	2,675
Deferred loan costs	5,164	4,107
Other	2,250	3,905
Total deferred tax liabilities	29,203	51,817
Net deferred tax asset	$ 24,403	$ 8,122

INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Annual limitation on deferred tax asset	$ 7,300
Deferred tax assets, state operating loss carryforwards	14,300	$ 11,800
Valuation allowance	15,120	12,828
Tax credits	7,613	4,521	$ 6,860
Investment in low-income housing	5,100	5,600	6,100
Unrecognized tax benefits	724	702
Unrecognized tax benefits, accrued interest and penalties	87	79
Tax Credits, New Market	300	300
Solar Energy Tax Credit
Operating Loss Carryforwards [Line Items]
Tax credits	6,100	2,300	4,000
Historic Rehabilitation Credit
Operating Loss Carryforwards [Line Items]
Tax credits	720	1,100	1,800
Low-income Housing
Operating Loss Carryforwards [Line Items]
Tax credits	538	780	$ 1,100
Tax credits, expected utilization, 2021	538
Tax credits, expected utilization, 2022	538
Tax credits, expected utilization, 2023	538
Tax credits, expected utilization, 2024	322
Tax credits, expected utilization, 2025	86
Tax credits, expected utilization, 2026	34
Capital Loss Carryforward
Operating Loss Carryforwards [Line Items]
Valuation allowance	1,900	2,300
Decrease in valuation allowance	491	617
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	183,300	159,100
State and Local Jurisdiction \| Operating Loss Carryforwards
Operating Loss Carryforwards [Line Items]
Valuation allowance	13,200	10,500
FSI
Operating Loss Carryforwards [Line Items]
Deferred tax assets, federal operating loss carryforwards	4,300	5,400
FSI \| Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 20,500	$ 25,800

INCOME TAXES (Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Computed "expected" tax on net income									$ 57,804	$ 36,538	$ 38,665
Increase (decrease) resulting from:
Nontaxable interest income									(5,504)	(4,011)	(3,281)
State income taxes, net of federal tax benefit									11,026	7,930	8,509
Tax credits									(7,613)	(4,521)	(6,860)
Valuation allowance									(440)	(374)	(1,648)
Excess tax expense/(benefit) on stock compensation									(270)	80	(229)
Other									332	411	(166)
Total income tax expense	$ 10,271	$ 13,250	$ 16,481	$ 15,333	$ 9,046	$ 13,681	$ 7,417	$ 5,909	$ 55,335	$ 36,053	$ 34,990
Effective tax rates									20.10%	20.70%	19.00%

EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	12 Months Ended
EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Employer matching contribution, percent	3.00%	3.00%	3.00%
Contributions by employer	$ 5.1	$ 4.1	$ 3.9
Cost recognized	$ 5.1	$ 4.8	$ 4.8

COMMITMENTS AND CONTINGENT LIABILITIES (Commitments to Extend Credit) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) request	Dec. 31, 2020 USD ($) request
Long-term Credit Commitments [Line Items]
Residential mortgage loans, repurchase obligation amount	$ 0	$ 0
Number of repurchase requests \| request	0	0
Pending Litigation \| AimBank
Long-term Credit Commitments [Line Items]
Legal expenses	$ 388
AimBank
Long-term Credit Commitments [Line Items]
Loss holdback	5,300
Business Combination, Consideration Transferred, Holdback	4,900
Commitments to Extend Credit
Long-term Credit Commitments [Line Items]
Commitments to extend credit, amount	3,830,000	$ 3,260,000
Standby Letters of Credit
Long-term Credit Commitments [Line Items]
Commitments to extend credit, amount	$ 51,400	$ 73,200

STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 02, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	May 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Excess tax benefit related to share-based payment awards		$ 312	$ 93
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods		3 years
Number of shares of stock awarded for services performed (in shares)		216,560	232,586	162,465
Share-based compensation costs		$ 8,500	$ 7,200	$ 5,800
Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods		3 years
Long-Term Incentive Plan 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares issuable (in shares)					1,460,000
Shares available for issuance (in shares)		1,192,760
Long-Term Incentive Plan 2012 \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based unrecognized compensation costs		$ 7,400
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares issuable (in shares)		500,000
Shares available for issuance (in shares)		290,236
Share-based compensation costs		$ 228	$ 186	$ 222
Stocks purchased under the plan (in shares)	32,179	46,899	43,207

STOCK-BASED COMPENSATION (Summary of RSUs Activity) (Details) - RSUs - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Outstanding at beginning of period (in shares)	348,275	254,383	266,995
Granted (in shares)	216,560	232,586	162,465
Vested (in shares)	(149,350)	(119,916)	(148,158)
Forfeited (in shares)	(25,600)	(18,778)	(26,919)
Outstanding at end of period (in shares)	389,885	348,275	254,383
Weighted-Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 38.22	$ 46.76	$ 43.89
Granted (in dollars per share)	51.44	32.06	45.09
Vested (in dollars per share)	40.83	44.47	39.27
Forfeited (in dollars per share)	40.96	46.10	49.20
Outstanding at end of period (in dollars per share)	$ 44.19	$ 38.22	$ 46.76

STOCKHOLDER RIGHTS PLAN (Details)	Jan. 17, 2012 $ / shares	Dec. 31, 2021 $ / shares shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2002 $ / shares shares
Temporary Equity [Line Items]
Ratio of preferred stock that can be purchased per right	0.001
Dividends, preferred stock, common share equivalents per share	$ 1,000
Preferred stock, liquidation preference per share of common stock	$ 1,000
Distribution date	10 days
Series A Preferred Stock
Temporary Equity [Line Items]
Preferred stock, par value (in dollars per share)		$ 1	$ 1	$ 1.00
Preferred stock, redemption price (in dollars per share)	$ 70,000
Preferred stock, shares authorized (in shares) \| shares		16,000	16,000	16,000
Preferred stock, shares issued (in shares) \| shares		0	0
Preferred stock, shares outstanding (in shares) \| shares		0	0

CAPITAL ISSUANCES (Details) - $ / shares		12 Months Ended
CAPITAL ISSUANCES (Details) - $ / shares	Jun. 26, 2020	Dec. 31, 2020	Dec. 31, 2021
Class of Stock [Line Items]
Issuance of shares of Series E preferred stock (in shares)		11,500
Depositary Shares, each representing 1/400th interest in a share of 7.00% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Class of Stock [Line Items]
Issuance of shares of Series E preferred stock (in shares)	4,600,000
Liquidation value per share (in dollars per share)	$ 25
Depositary Shares, each representing 1/400th interest in a share of 7.00% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E \| Heartland Financial
Class of Stock [Line Items]
Ownership percentage	0.25%
Series E preferred stock
Class of Stock [Line Items]
Preferred stock, dividend rate	7.00%
Preferred stock, par value (in dollars per share)		$ 1	$ 1
Liquidation value per share (in dollars per share)	$ 10,000

REGULATORY CAPITAL REQUIREMENTS AND RESTRICTIONS ON SUBSIDIARY DIVIDENDS (Details) $ in Thousands	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 2,040,500	$ 1,739,048
Actual - Ratio	0.1590	0.1471
For Capital Adequacy Purposes - Amount	$ 1,026,345	$ 945,523
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 1,590,111	$ 1,401,131
Actual - Ratio	0.1239	0.1185
For Capital Adequacy Purposes - Amount	$ 769,759	$ 709,142
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 1,479,406	$ 1,290,426
Actual - Ratio	11.53%	10.92%
For Capital Adequacy Purposes - Amount	$ 577,319	$ 531,857
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 1,590,111	$ 1,401,131
Actual - Ratio	0.0857	0.0902
For Capital Adequacy Purposes - Amount	$ 742,155	$ 621,275
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
Minimum Capital Requirement
Tier 1 Capital (to Average Assets)
Retained earnings available for dividend payments	$ 758,600
Capital Requirement to Remain Well Capitalized
Tier 1 Capital (to Average Assets)
Retained earnings available for dividend payments	502,100
Dubuque Bank and Trust Company
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 180,934	$ 177,782
Actual - Ratio	0.1307	0.1394
For Capital Adequacy Purposes - Amount	$ 110,758	$ 102,018
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 138,447	$ 127,523
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 168,321	$ 164,316
Actual - Ratio	0.1216	0.1289
For Capital Adequacy Purposes - Amount	$ 83,068	$ 76,514
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 110,758	$ 102,018
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 168,321	$ 164,316
Actual - Ratio	12.16%	12.89%
For Capital Adequacy Purposes - Amount	$ 62,301	$ 57,385
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 89,991	$ 82,890
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 168,321	$ 164,316
Actual - Ratio	0.0802	0.0852
For Capital Adequacy Purposes - Amount	$ 83,982	$ 77,150
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 104,978	$ 96,437
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
Illinois Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 135,986	$ 133,674
Actual - Ratio	0.1288	0.1313
For Capital Adequacy Purposes - Amount	$ 84,466	$ 81,432
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 105,583	$ 101,790
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 126,869	$ 121,513
Actual - Ratio	0.1202	0.1194
For Capital Adequacy Purposes - Amount	$ 63,350	$ 61,074
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 84,466	$ 81,432
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 126,869	$ 121,513
Actual - Ratio	12.02%	11.94%
For Capital Adequacy Purposes - Amount	$ 47,512	$ 45,806
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 68,629	$ 66,164
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 126,869	$ 121,513
Actual - Ratio	0.0755	0.0822
For Capital Adequacy Purposes - Amount	$ 67,212	$ 59,129
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 84,016	$ 73,912
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
Wisconsin Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 124,009	$ 121,899
Actual - Ratio	0.1427	0.1435
For Capital Adequacy Purposes - Amount	$ 69,499	$ 67,956
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 86,874	$ 84,945
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 114,825	$ 111,985
Actual - Ratio	0.1322	0.1318
For Capital Adequacy Purposes - Amount	$ 52,124	$ 50,967
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 69,499	$ 67,956
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 114,825	$ 111,985
Actual - Ratio	13.22%	13.18%
For Capital Adequacy Purposes - Amount	$ 39,093	$ 38,225
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 56,468	$ 55,214
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 114,825	$ 111,985
Actual - Ratio	0.0966	0.0967
For Capital Adequacy Purposes - Amount	$ 47,551	$ 46,337
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 59,439	$ 57,921
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
New Mexico Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 213,981	$ 177,708
Actual - Ratio	0.1210	0.1340
For Capital Adequacy Purposes - Amount	$ 141,530	$ 106,120
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 176,912	$ 132,649
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 198,728	$ 161,750
Actual - Ratio	0.1123	0.1219
For Capital Adequacy Purposes - Amount	$ 106,147	$ 79,590
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 141,530	$ 106,120
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 198,728	$ 161,750
Actual - Ratio	11.23%	12.19%
For Capital Adequacy Purposes - Amount	$ 79,611	$ 59,692
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 114,993	$ 86,222
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 198,728	$ 161,750
Actual - Ratio	0.0778	0.0811
For Capital Adequacy Purposes - Amount	$ 102,173	$ 79,764
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 127,716	$ 99,705
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
Arizona Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 157,475	$ 112,589
Actual - Ratio	0.1261	0.1216
For Capital Adequacy Purposes - Amount	$ 99,886	$ 74,056
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 124,858	$ 92,571
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 147,098	$ 102,882
Actual - Ratio	0.1178	0.1111
For Capital Adequacy Purposes - Amount	$ 74,915	$ 55,542
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 99,886	$ 74,056
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 147,098	$ 102,882
Actual - Ratio	11.78%	11.11%
For Capital Adequacy Purposes - Amount	$ 56,186	$ 41,657
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 81,158	$ 60,171
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 147,098	$ 102,882
Actual - Ratio	0.0799	0.0909
For Capital Adequacy Purposes - Amount	$ 73,605	$ 45,295
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 92,006	$ 56,619
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
Rocky Mountain Bank
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 64,366	$ 56,872
Actual - Ratio	0.1307	0.1349
For Capital Adequacy Purposes - Amount	$ 39,385	$ 33,732
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 49,231	$ 42,166
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 59,159	$ 51,597
Actual - Ratio	0.1202	0.1224
For Capital Adequacy Purposes - Amount	$ 29,538	$ 25,299
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 39,385	$ 33,732
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 59,159	$ 51,597
Actual - Ratio	12.02%	12.24%
For Capital Adequacy Purposes - Amount	$ 22,154	$ 18,974
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 32,000	$ 27,408
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 59,159	$ 51,597
Actual - Ratio	0.0827	0.0841
For Capital Adequacy Purposes - Amount	$ 28,614	$ 24,552
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 35,767	$ 30,690
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
Citywide Banks
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 265,964	$ 258,419
Actual - Ratio	0.1509	0.1530
For Capital Adequacy Purposes - Amount	$ 140,999	$ 135,097
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 176,248	$ 168,871
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 244,722	$ 237,295
Actual - Ratio	0.1389	0.1405
For Capital Adequacy Purposes - Amount	$ 105,749	$ 101,323
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 140,999	$ 135,097
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 244,722	$ 237,295
Actual - Ratio	13.89%	14.05%
For Capital Adequacy Purposes - Amount	$ 79,312	$ 75,992
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 114,561	$ 109,766
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 244,722	$ 237,295
Actual - Ratio	0.0954	0.0967
For Capital Adequacy Purposes - Amount	$ 102,587	$ 98,182
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 128,233	$ 122,728
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
Minnesota Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 87,263	$ 85,566
Actual - Ratio	0.1479	0.1311
For Capital Adequacy Purposes - Amount	$ 47,194	$ 52,206
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 58,993	$ 65,258
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 81,637	$ 78,661
Actual - Ratio	0.1384	0.1205
For Capital Adequacy Purposes - Amount	$ 35,396	$ 39,155
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 47,194	$ 52,206
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 81,637	$ 78,661
Actual - Ratio	13.84%	12.05%
For Capital Adequacy Purposes - Amount	$ 26,547	$ 29,366
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 38,346	$ 42,418
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 81,637	$ 78,661
Actual - Ratio	0.0969	0.0868
For Capital Adequacy Purposes - Amount	$ 33,698	$ 36,251
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 42,123	$ 45,313
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500
Bank of Blue Valley
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 160,694	$ 157,093
Actual - Ratio	0.1674	0.1740
For Capital Adequacy Purposes - Amount	$ 76,785	$ 72,240
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 95,982	$ 90,300
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 150,305	$ 145,795
Actual - Ratio	0.1566	0.1615
For Capital Adequacy Purposes - Amount	$ 57,589	$ 54,180
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 76,785	$ 72,240
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 150,305	$ 145,795
Actual - Ratio	15.66%	16.15%
For Capital Adequacy Purposes - Amount	$ 43,192	$ 40,635
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 62,388	$ 58,695
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 150,305	$ 145,795
Actual - Ratio	0.1075	0.1093
For Capital Adequacy Purposes - Amount	$ 55,921	$ 53,343
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 69,901	$ 66,679
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
Premier Valley Bank
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 111,741	$ 93,032
Actual - Ratio	0.1282	0.1262
For Capital Adequacy Purposes - Amount	$ 69,720	$ 58,968
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 87,151	$ 73,710
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 104,336	$ 85,456
Actual - Ratio	0.1197	0.1159
For Capital Adequacy Purposes - Amount	$ 52,290	$ 44,226
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 69,720	$ 58,968
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 104,336	$ 85,456
Actual - Ratio	11.97%	11.59%
For Capital Adequacy Purposes - Amount	$ 39,218	$ 33,170
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 56,648	$ 47,912
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 104,336	$ 85,456
Actual - Ratio	0.0922	0.0857
For Capital Adequacy Purposes - Amount	$ 45,256	$ 39,893
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 56,570	$ 49,866
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500
First Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 282,231	$ 304,397
Actual - Ratio	0.1548	0.1534
For Capital Adequacy Purposes - Amount	$ 145,823	$ 158,705
For Capital Adequacy Purposes - Ratio	0.0800	0.0800
To Be Well Capitalized Under Prompt Corrective Action - Amount	$ 182,279	$ 198,381
To Be Well Capitalized Under Prompt Corrective Action - Ratio	0.1000	0.1000
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	$ 263,096	$ 279,521
Actual - Ratio	0.1443	0.1409
For Capital Adequacy Purposes - Amount	$ 109,367	$ 119,029
For Capital Adequacy Purposes - Ratio	0.0600	0.0600
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 145,823	$ 158,705
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0800	0.0800
Common Equity Tier 1 (to Risk-Weighted Assets)
Actual - Amount	$ 263,096	$ 279,521
Actual - Ratio	14.43%	14.09%
For Capital Adequacy Purposes - Amount	$ 82,025	$ 89,271
For Capital Adequacy Purposes - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 118,481	$ 128,948
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets)
Actual - Amount	$ 263,096	$ 279,521
Actual - Ratio	0.0984	0.1763
For Capital Adequacy Purposes - Amount	$ 106,986	$ 63,407
For Capital Adequacy Purposes - Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 133,732	$ 79,259
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.0500	0.0500

FAIR VALUE (Fair Value Measurement Recurring) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 7,509,586	$ 6,108,346
Equity securities with a readily determinable fair value	20,788	19,629
U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	193,384	166,779
Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,085,033	1,635,227
Commercial mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	123,912	174,153
Commercial mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	600,888	252,767
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	409,653	1,069,266
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	3,040	3,742
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,008	2,026
Derivative financial instruments	0	0
Derivative liabilities	0	0
Level 1 \| Interest rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Level 1 \| Forward commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Derivative liabilities	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	7,529,366	6,125,949
Derivative financial instruments	23,891	44,102
Derivative liabilities	25,099	51,962
Level 2 \| Interest rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Level 2 \| Forward commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	32	0
Derivative liabilities	95	697
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Derivative financial instruments	0	0
Derivative liabilities	0	0
Level 3 \| Interest rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	1,306	1,827
Level 3 \| Forward commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Derivative liabilities	0	0
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	7,555,603	6,173,904
Total liabilities at fair value	25,194	52,659
Recurring Basis \| U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,008	2,026
Recurring Basis \| U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	193,384	166,779
Recurring Basis \| Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,085,033	1,635,227
Recurring Basis \| Mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,349,289	1,355,270
Recurring Basis \| Mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,743,379	1,449,116
Recurring Basis \| Commercial mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	123,912	174,153
Recurring Basis \| Commercial mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	600,888	252,767
Recurring Basis \| Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	409,653	1,069,266
Recurring Basis \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	3,040	3,742
Recurring Basis \| Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities with a readily determinable fair value	20,788	19,629
Recurring Basis \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	23,891	44,102
Recurring Basis \| Interest rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	1,306	1,827
Recurring Basis \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	25,099	51,962
Recurring Basis \| Forward commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	32	0
Derivative liabilities	95	697
Recurring Basis \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	1,008	2,026
Total liabilities at fair value	0	0
Recurring Basis \| Level 1 \| U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,008	2,026
Recurring Basis \| Level 1 \| U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Commercial mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Commercial mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 1 \| Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities with a readily determinable fair value	0	0
Recurring Basis \| Level 1 \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Recurring Basis \| Level 1 \| Interest rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Recurring Basis \| Level 1 \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Recurring Basis \| Level 1 \| Forward commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Derivative liabilities	0	0
Recurring Basis \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	7,553,289	6,170,051
Total liabilities at fair value	25,194	52,659
Recurring Basis \| Level 2 \| U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 2 \| U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	193,384	166,779
Recurring Basis \| Level 2 \| Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,085,033	1,635,227
Recurring Basis \| Level 2 \| Mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	2,349,289	1,355,270
Recurring Basis \| Level 2 \| Mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	1,743,379	1,449,116
Recurring Basis \| Level 2 \| Commercial mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	123,912	174,153
Recurring Basis \| Level 2 \| Commercial mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	600,888	252,767
Recurring Basis \| Level 2 \| Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	409,653	1,069,266
Recurring Basis \| Level 2 \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	3,040	3,742
Recurring Basis \| Level 2 \| Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities with a readily determinable fair value	20,788	19,629
Recurring Basis \| Level 2 \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	23,891	44,102
Recurring Basis \| Level 2 \| Interest rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Recurring Basis \| Level 2 \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	25,099	51,962
Recurring Basis \| Level 2 \| Forward commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	32	0
Derivative liabilities	95	697
Recurring Basis \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value	1,306	1,827
Total liabilities at fair value	0	0
Recurring Basis \| Level 3 \| U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Commercial mortgage-backed securities - agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Commercial mortgage-backed securities - non-agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring Basis \| Level 3 \| Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities with a readily determinable fair value	0	0
Recurring Basis \| Level 3 \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Recurring Basis \| Level 3 \| Interest rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	1,306	1,827
Recurring Basis \| Level 3 \| Derivative financial instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0	0
Recurring Basis \| Level 3 \| Forward commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0
Derivative liabilities	$ 0	$ 0

FAIR VALUE (Fair Value Measurement Non-recurring) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Benefit to provision for loan losses	$ 5,313	$ 4,534	$ 7,080	$ 648	$ (17,072)	$ (1,678)	$ (26,796)	$ (21,520)	$ 17,575	$ (67,066)	$ (16,657)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0				0				0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	21,640				57,949				21,640	57,949
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0				0				0	0
Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	41,641				34,488				41,641	34,488
Loans held for sale	21,640				57,949				21,640	57,949
Other real estate owned	1,927				6,624				1,927	6,624
Premises, furniture and equipment held for sale	10,828				6,499				10,828	6,499
Nonrecurring Basis \| Agricultural and agricultural real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	11,404								11,404
Nonrecurring Basis \| Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0								0
Nonrecurring Basis \| Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	855								855
Nonrecurring Basis \| (Gains)/Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	2,284				12,082				2,284	12,082
Loans held for sale	(813)				(982)				(813)	(982)
Other real estate owned	686				1,044				686	1,044
Premises, furniture and equipment held for sale	241				3,288				241	3,288
Nonrecurring Basis \| Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,989				11,256				8,989	11,256
Nonrecurring Basis \| Commercial and industrial \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,447				5,874				8,447	5,874
Nonrecurring Basis \| Commercial and industrial \| Non-owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	11,946				4,907				11,946	4,907
Nonrecurring Basis \| Commercial and industrial \| (Gains)/Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	275				451				275	451
Nonrecurring Basis \| Commercial and industrial \| (Gains)/Losses \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				11,631				0	11,631
Nonrecurring Basis \| Commercial and industrial \| (Gains)/Losses \| Non-owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	1,637				0				1,637	0
Nonrecurring Basis \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Owner occupied commercial real estate \| (Gains)/Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Agricultural and agricultural real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans					12,451					12,451
Nonrecurring Basis \| Agricultural and agricultural real estate \| (Gains)/Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	372				0				372	0
Nonrecurring Basis \| Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans					0					0
Nonrecurring Basis \| Residential real estate \| (Gains)/Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans					0					0
Nonrecurring Basis \| Consumer \| (Gains)/Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Loans held for sale	0				0				0	0
Other real estate owned	0				0				0	0
Premises, furniture and equipment held for sale	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Commercial and industrial \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Commercial and industrial \| Non-owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Agricultural and agricultural real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Loans held for sale	21,640				57,949				21,640	57,949
Other real estate owned	0				0				0	0
Premises, furniture and equipment held for sale	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2) \| Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2) \| Commercial and industrial \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2) \| Commercial and industrial \| Non-owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2) \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2) \| Agricultural and agricultural real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2) \| Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Other Observable Inputs (Level 2) \| Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	41,641				34,488				41,641	34,488
Loans held for sale	0				0				0	0
Other real estate owned	1,927				6,624				1,927	6,624
Premises, furniture and equipment held for sale	10,828				6,499				10,828	6,499
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3) \| Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,989				11,256				8,989	11,256
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3) \| Commercial and industrial \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,447				5,874				8,447	5,874
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3) \| Commercial and industrial \| Non-owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	11,946				4,907				11,946	4,907
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3) \| Owner occupied commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3) \| Agricultural and agricultural real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	11,404				12,451				11,404	12,451
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3) \| Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	855				0				855	0
Nonrecurring Basis \| Significant Unobservable Inputs (Level 3) \| Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0				0				0	0
Nonrecurring Basis \| Commercial Servicing Rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing rights	6,890				5,189				6,890	5,189
Nonrecurring Basis \| Commercial Servicing Rights \| (Gains)/Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing rights	(1,088)				1,778				(1,088)	1,778
Nonrecurring Basis \| Commercial Servicing Rights \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing rights	0				0				0	0
Nonrecurring Basis \| Commercial Servicing Rights \| Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing rights	0				0				0	0
Nonrecurring Basis \| Commercial Servicing Rights \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing rights	$ 6,890				$ 5,189				$ 6,890	$ 5,189

FAIR VALUE (Quantitative Information About Level 3 Fair Value Measurements) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Interest rate lock commitments \| Recurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	$ 1,306	$ 1,827
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for sale	0	0
Interest rate lock commitments	0	0
Level 3 \| Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	1,306	1,827
Level 3 \| Interest rate lock commitments \| Recurring Basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	1,306	1,827
Valuation Technique, Discounted Cash Flow \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Servicing rights	$ 6,890	$ 5,189
Valuation Technique, Discounted Cash Flow \| Level 3 \| Measurement Input, Discount Rate \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	9.02%	9.02%
Valuation Technique, Discounted Cash Flow \| Level 3 \| Measurement Input, Discount Rate \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	9.00%	9.00%
Valuation Technique, Discounted Cash Flow \| Level 3 \| Measurement Input, Discount Rate \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	11.00%	11.00%
Valuation Technique, Discounted Cash Flow \| Level 3 \| Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments		$ 1,827
Valuation Technique, Discounted Cash Flow \| Level 3 \| Interest rate lock commitments \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input		0
Valuation Technique, Discounted Cash Flow \| Level 3 \| Interest rate lock commitments \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input		0.99
Valuation Technique, Discounted Cash Flow \| Level 3 \| Interest rate lock commitments \| Measurement Input, Closing Ratio \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0.88	0.86
Valuation Technique, Discounted Cash Flow \| Level 3 \| Interest rate lock commitments \| Measurement Input, Closing Ratio \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0
Valuation Technique, Discounted Cash Flow \| Level 3 \| Interest rate lock commitments \| Measurement Input, Closing Ratio \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset, measurement input	0.99
Valuation Technique, Modified Appraised Value \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	$ 1,927	$ 6,624
Valuation Technique, Modified Appraised Value \| Level 3 \| Measurement Input, Appraised Value \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Measurement Input, Appraised Value \| Minimum \| Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Measurement Input, Appraised Value \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	10.00%	10.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Measurement Input, Appraised Value \| Maximum \| Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate		10.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Measurement Input, Constant Prepayment Rate \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	13.40%	16.20%
Valuation Technique, Modified Appraised Value \| Level 3 \| Measurement Input, Constant Prepayment Rate \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	13.10%	7.30%
Valuation Technique, Modified Appraised Value \| Level 3 \| Measurement Input, Constant Prepayment Rate \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	18.60%	18.80%
Valuation Technique, Modified Appraised Value \| Level 3 \| Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 8,989	$ 11,256
Valuation Technique, Modified Appraised Value \| Level 3 \| Commercial and industrial \| Measurement Input, Appraised Value \| Minimum \| Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Commercial and industrial \| Measurement Input, Appraised Value \| Maximum \| Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	6.00%	8.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Owner occupied commercial real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 8,447	$ 5,874
Valuation Technique, Modified Appraised Value \| Level 3 \| Owner occupied commercial real estate \| Measurement Input, Appraised Value \| Minimum \| Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Owner occupied commercial real estate \| Measurement Input, Appraised Value \| Maximum \| Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	7.00%	12.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Non-owner occupied commercial real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 11,946	$ 4,907
Valuation Technique, Modified Appraised Value \| Level 3 \| Non-owner occupied commercial real estate \| Measurement Input, Appraised Value \| Minimum \| Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Non-owner occupied commercial real estate \| Measurement Input, Appraised Value \| Maximum \| Commercial and industrial
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	10.00%	10.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 11,404	$ 12,451
Valuation Technique, Modified Appraised Value \| Level 3 \| Residential real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 855
Valuation Technique, Modified Appraised Value \| Level 3 \| Agricultural and Agricultural Real Estate \| Measurement Input, Appraised Value \| Minimum \| Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Agricultural and Agricultural Real Estate \| Measurement Input, Appraised Value \| Maximum \| Agricultural and agricultural real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	7.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Residential Real Estate \| Measurement Input, Appraised Value \| Minimum \| Residential real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Residential Real Estate \| Measurement Input, Appraised Value \| Maximum \| Residential real estate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	7.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Premises, Furniture and Equipment Held for Sale \| Measurement Input, Appraised Value \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	0.00%	0.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Premises, Furniture and Equipment Held for Sale \| Measurement Input, Appraised Value \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Pretax discount rate	10.00%	10.00%
Valuation Technique, Modified Appraised Value \| Level 3 \| Recurring Basis \| Premises, Furniture and Equipment Held for Sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Premises, furniture and equipment held for sale	$ 10,828	$ 6,499
Interest rate lock commitments \| Valuation Technique, Discounted Cash Flow \| Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	$ 1,306

FAIR VALUE (Changes Level 3 Assets (Fair Value, Recurring)) (Details) - Interest rate lock commitments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 1,827	$ 681
Total gains (losses), net, included in earnings	(2,345)	2,803
Issuances	15,403	17,221
Settlements	(13,579)	(18,878)
Balance at end of period	$ 1,306	$ 1,827

FAIR VALUE (Estimated Fair Value Financial Instruments (Including Carrying Amounts)) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financial assets:
Carried at fair value	$ 7,509,586	$ 6,108,346
Held to maturity	94,139	100,041
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	435,599	337,903
Time deposits in other financial institutions	2,894	3,129
Carried at fair value	1,008	2,026
Held to maturity	0	0
Other investments	0	0
Loans held for sale	0	0
Loans, net	0	0
Cash surrender value on life insurance	0	0
Derivatives	0	0
Financial liabilities:
Short term borrowings	0	0
Other borrowings	0	0
Derivatives	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Interest rate lock commitments
Financial assets:
Derivatives	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Forward commitments
Financial assets:
Derivatives	0	0
Financial liabilities:
Derivatives	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Demand deposits
Financial liabilities:
Deposits	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Savings deposits
Financial liabilities:
Deposits	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Time deposits
Financial liabilities:
Deposits	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Commercial and industrial \| Commercial and industrial
Financial assets:
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Commercial and industrial \| Real estate construction
Financial assets:
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Agricultural and agricultural real estate
Financial assets:
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Residential real estate
Financial assets:
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Consumer
Financial assets:
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Paycheck Protection Program ("PPP") \| Commercial and industrial
Financial assets:
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Non-owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	0	0
Significant Other Observable Inputs (Level 2)
Financial assets:
Cash and cash equivalents	0	0
Time deposits in other financial institutions	0	0
Carried at fair value	7,529,366	6,125,949
Held to maturity	94,139	100,041
Other investments	82,567	75,523
Loans held for sale	21,640	57,949
Loans, net	9,809,915	9,735,181
Cash surrender value on life insurance	191,722	187,664
Derivatives	23,891	44,102
Financial liabilities:
Short term borrowings	131,597	167,872
Other borrowings	373,194	458,806
Derivatives	25,099	51,962
Significant Other Observable Inputs (Level 2) \| Interest rate lock commitments
Financial assets:
Derivatives	0	0
Significant Other Observable Inputs (Level 2) \| Forward commitments
Financial assets:
Derivatives	32	0
Financial liabilities:
Derivatives	95	697
Significant Other Observable Inputs (Level 2) \| Demand deposits
Financial liabilities:
Deposits	6,495,326	5,688,810
Significant Other Observable Inputs (Level 2) \| Savings deposits
Financial liabilities:
Deposits	8,897,909	8,019,704
Significant Other Observable Inputs (Level 2) \| Time deposits
Financial liabilities:
Deposits	1,024,020	1,273,468
Significant Other Observable Inputs (Level 2) \| Commercial and industrial \| Commercial and industrial
Financial assets:
Loans, net	2,594,012	2,379,785
Significant Other Observable Inputs (Level 2) \| Commercial and industrial \| Real estate construction
Financial assets:
Loans, net	844,578	849,224
Significant Other Observable Inputs (Level 2) \| Agricultural and agricultural real estate
Financial assets:
Loans, net	737,834	685,278
Significant Other Observable Inputs (Level 2) \| Residential real estate
Financial assets:
Loans, net	818,323	828,366
Significant Other Observable Inputs (Level 2) \| Consumer
Financial assets:
Loans, net	415,487	407,914
Significant Other Observable Inputs (Level 2) \| Paycheck Protection Program ("PPP") \| Commercial and industrial
Financial assets:
Loans, net	199,883	957,785
Significant Other Observable Inputs (Level 2) \| Owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	2,213,583	1,739,523
Significant Other Observable Inputs (Level 2) \| Non-owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	1,986,215	1,887,306
Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	0	0
Time deposits in other financial institutions	0	0
Carried at fair value	0	0
Held to maturity	0	0
Other investments	0	0
Loans held for sale	0	0
Loans, net	41,641	34,488
Cash surrender value on life insurance	0	0
Derivatives	0	0
Financial liabilities:
Short term borrowings	0	0
Other borrowings	0	0
Derivatives	0	0
Significant Unobservable Inputs (Level 3) \| Interest rate lock commitments
Financial assets:
Derivatives	1,306	1,827
Significant Unobservable Inputs (Level 3) \| Forward commitments
Financial assets:
Derivatives	0	0
Financial liabilities:
Derivatives	0	0
Significant Unobservable Inputs (Level 3) \| Demand deposits
Financial liabilities:
Deposits	0	0
Significant Unobservable Inputs (Level 3) \| Savings deposits
Financial liabilities:
Deposits	0	0
Significant Unobservable Inputs (Level 3) \| Time deposits
Financial liabilities:
Deposits	0	0
Significant Unobservable Inputs (Level 3) \| Commercial and industrial \| Commercial and industrial
Financial assets:
Loans, net	8,989	11,256
Significant Unobservable Inputs (Level 3) \| Commercial and industrial \| Real estate construction
Financial assets:
Loans, net	0	0
Significant Unobservable Inputs (Level 3) \| Agricultural and agricultural real estate
Financial assets:
Loans, net	11,404	12,451
Significant Unobservable Inputs (Level 3) \| Residential real estate
Financial assets:
Loans, net	855	0
Significant Unobservable Inputs (Level 3) \| Consumer
Financial assets:
Loans, net	0	0
Significant Unobservable Inputs (Level 3) \| Paycheck Protection Program ("PPP") \| Commercial and industrial
Financial assets:
Loans, net	0	0
Significant Unobservable Inputs (Level 3) \| Owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	8,447	5,874
Significant Unobservable Inputs (Level 3) \| Non-owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	11,946	4,907
Carrying Amount
Financial assets:
Cash and cash equivalents	435,599	337,903
Time deposits in other financial institutions	2,894	3,129
Carried at fair value	7,530,374	6,127,975
Held to maturity	84,709	88,839
Other investments	82,567	75,253
Loans held for sale	21,640	57,949
Loans, net	9,844,484	9,891,445
Cash surrender value on life insurance	191,722	187,664
Derivatives	23,891	44,102
Financial liabilities:
Short term borrowings	131,597	167,872
Other borrowings	372,072	457,042
Derivatives	25,099	51,962
Carrying Amount \| Interest rate lock commitments
Financial assets:
Derivatives	1,306	1,827
Carrying Amount \| Forward commitments
Financial assets:
Derivatives	32	0
Financial liabilities:
Derivatives	95	697
Carrying Amount \| Demand deposits
Financial liabilities:
Deposits	6,495,326	5,688,810
Carrying Amount \| Savings deposits
Financial liabilities:
Deposits	8,897,909	8,019,704
Carrying Amount \| Time deposits
Financial liabilities:
Deposits	1,024,020	1,271,391
Carrying Amount \| Commercial and industrial \| Commercial and industrial
Financial assets:
Loans, net	2,617,347	2,495,981
Carrying Amount \| Commercial and industrial \| Real estate construction
Financial assets:
Loans, net	833,581	843,140
Carrying Amount \| Agricultural and agricultural real estate
Financial assets:
Loans, net	748,540	707,397
Carrying Amount \| Residential real estate
Financial assets:
Loans, net	820,856	828,507
Carrying Amount \| Consumer
Financial assets:
Loans, net	410,474	401,622
Carrying Amount \| Paycheck Protection Program ("PPP") \| Commercial and industrial
Financial assets:
Loans, net	199,883	957,785
Carrying Amount \| Owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	2,221,120	1,756,405
Carrying Amount \| Non-owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	1,992,683	1,900,608
Estimated Fair Value
Financial assets:
Cash and cash equivalents	435,599	337,903
Time deposits in other financial institutions	2,894	3,129
Carried at fair value	7,530,374	6,127,975
Held to maturity	94,139	100,041
Other investments	82,567	75,523
Loans held for sale	21,640	57,949
Loans, net	9,851,556	9,769,669
Cash surrender value on life insurance	191,722	187,664
Derivatives	23,891	44,102
Financial liabilities:
Short term borrowings	131,597	167,872
Other borrowings	373,194	458,806
Derivatives	25,099	51,962
Estimated Fair Value \| Interest rate lock commitments
Financial assets:
Derivatives	1,306	1,827
Estimated Fair Value \| Forward commitments
Financial assets:
Derivatives	32	0
Financial liabilities:
Derivatives	95	697
Estimated Fair Value \| Demand deposits
Financial liabilities:
Deposits	6,495,326	5,688,810
Estimated Fair Value \| Savings deposits
Financial liabilities:
Deposits	8,897,909	8,019,704
Estimated Fair Value \| Time deposits
Financial liabilities:
Deposits	1,024,020	1,273,468
Estimated Fair Value \| Commercial and industrial \| Commercial and industrial
Financial assets:
Loans, net	2,603,001	2,391,041
Estimated Fair Value \| Commercial and industrial \| Real estate construction
Financial assets:
Loans, net	844,578	849,224
Estimated Fair Value \| Agricultural and agricultural real estate
Financial assets:
Loans, net	749,238	697,729
Estimated Fair Value \| Residential real estate
Financial assets:
Loans, net	819,178	828,366
Estimated Fair Value \| Consumer
Financial assets:
Loans, net	415,487	407,914
Estimated Fair Value \| Paycheck Protection Program ("PPP") \| Commercial and industrial
Financial assets:
Loans, net	199,883	957,785
Estimated Fair Value \| Owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	2,222,030	1,745,397
Estimated Fair Value \| Non-owner occupied commercial real estate \| Commercial and industrial
Financial assets:
Loans, net	$ 1,998,161	$ 1,892,213

REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
REVENUE (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									$ 87,666	$ 71,085	$ 75,342
Loan servicing income									3,276	2,977	4,843
Securities gains, net									5,910	7,793	7,659
Unrealized gain on equity securities, net									58	640	525
Net gains on sale of loans held for sale									20,605	28,515	15,555
Valuation adjustment on servicing rights									1,088	(1,778)	(911)
Income on bank owned life insurance									3,762	3,554	3,785
Other noninterest income									6,570	7,505	9,410
Total noninterest income out-of-scope of Topic 606									41,269	49,206	40,866
TOTAL NONINTEREST INCOME	$ 32,730	$ 32,724	$ 33,164	$ 30,317	$ 32,621	$ 31,216	$ 30,637	$ 25,817	128,935	120,291	116,208
Service charges and fees on deposit accounts
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									16,414	14,441	12,790
Overdraft fees
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									11,005	9,166	11,543
Customer service and other service fees
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									220	177	331
Credit card fee income
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									21,623	16,026	15,594
Debit card income
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									10,441	7,657	11,899
Total service charges and fees
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									59,703	47,467	52,157
Trust fees
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									24,417	20,862	19,399
Brokerage and insurance commissions
Disaggregation of Revenue [Line Items]
Total noninterest income in-scope of Topic 606									$ 3,546	$ 2,756	$ 3,786

PARENT COMPANY ONLY FINANCIAL INFORMATION (Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets:
Cash and interest bearing deposits	$ 435,599	$ 337,903
Other assets	246,923	281,024
TOTAL ASSETS	19,274,549	17,908,339
Liabilities and Stockholders’ equity:
Other borrowings	372,072	457,042
Accrued expenses and other liabilities	171,447	224,289
TOTAL LIABILITIES	17,092,371	15,829,108
Stockholders’ equity:
Common stock	42,275	42,094
Capital surplus	1,071,956	1,062,083
Retained earnings	962,994	791,630
Accumulated other comprehensive income (loss)	(5,752)	72,719
TOTAL STOCKHOLDERS' EQUITY	2,182,178	2,079,231	$ 1,578,137	$ 1,325,175
TOTAL LIABILITIES AND EQUITY	19,274,549	17,908,339
Parent
Assets:
Cash and interest bearing deposits	259,830	84,728
Investment in subsidiaries	2,263,037	2,234,813
Other assets	81,020	68,263
TOTAL ASSETS	2,603,887	2,387,804
Liabilities and Stockholders’ equity:
Other borrowings	369,581	265,168
Accrued expenses and other liabilities	52,128	43,405
TOTAL LIABILITIES	421,709	308,573
Stockholders’ equity:
Preferred stock	110,705	110,705
Common stock	42,275	42,094
Capital surplus	1,071,956	1,062,083
Retained earnings	962,994	791,630
Accumulated other comprehensive income (loss)	(5,752)	72,719
TOTAL STOCKHOLDERS' EQUITY	2,182,178	2,079,231
TOTAL LIABILITIES AND EQUITY	$ 2,603,887	$ 2,387,804

PARENT COMPANY ONLY FINANCIAL INFORMATION (Income Statements) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating expenses:
Interest									$ 28,200	$ 44,883	$ 80,600
Salaries and employee benefits									240,114	202,668	200,341
Professional fees									64,600	54,068	47,697
INCOME BEFORE INCOME TAXES									275,258	173,991	184,119
Income tax benefit	$ (10,271)	$ (13,250)	$ (16,481)	$ (15,333)	$ (9,046)	$ (13,681)	$ (7,417)	$ (5,909)	(55,335)	(36,053)	(34,990)
NET INCOME	49,580	55,924	61,605	52,814	39,809	47,958	30,131	20,040	219,923	137,938	149,129
Preferred dividends	(2,012)	(2,013)	(2,012)	(2,013)	(2,014)	(2,437)	0	0	(8,050)	(4,451)	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 47,568	$ 53,911	$ 59,593	$ 50,801	$ 37,795	$ 45,521	$ 30,131	$ 20,040	211,873	133,487	149,129
Parent
Operating revenues:
Dividends from subsidiaries									163,500	83,000	137,000
Other									1,885	1,948	893
Total operating revenues									165,385	84,948	137,893
Operating expenses:
Interest									12,851	13,573	15,044
Salaries and employee benefits									7,509	8,147	4,072
Professional fees									5,161	4,310	3,029
Other operating expenses									10,984	4,939	15,559
Total operating expenses									36,505	30,969	37,704
Equity in undistributed earnings									75,368	73,430	34,307
INCOME BEFORE INCOME TAXES									204,248	127,409	134,496
Income tax benefit									15,675	10,529	14,633
NET INCOME									219,923	137,938	149,129
Preferred dividends									(8,050)	(4,451)	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS									$ 211,873	$ 133,487	$ 149,129

PARENT COMPANY ONLY FINANCIAL INFORMATION (Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 49,580	$ 55,924	$ 61,605	$ 52,814	$ 39,809	$ 47,958	$ 30,131	$ 20,040	$ 219,923	$ 137,938	$ 149,129
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on extinguishment of debt									0	0	(375)
Other, net									(2,712)	(1,745)	(34,786)
NET CASH PROVIDED BY OPERATING ACTIVITIES									326,037	190,368	161,174
Cash flows from investing activities:
Net assets acquired									0	641,315	76,071
NET CASH USED BY INVESTING ACTIVITIES									(1,525,100)	(2,301,426)	(573,970)
Cash flows from financing activities:
Proceeds from other borrowings									147,614	314,397	50
Repayments of other borrowings									(233,794)	(134,244)	(20,693)
Payment for the redemption of debt									0	0	(2,125)
Cash dividends paid									(48,559)	(31,906)	(24,607)
Proceeds from issuance of preferred stock									0	110,705	0
Proceeds from issuance of common stock									2,925	3,004	661
NET CASH PROVIDED BY FINANCING ACTIVITIES									1,296,759	2,070,227	517,900
Net increase (decrease) in cash and cash equivalents									97,696	(40,831)	105,104
Cash and cash equivalents at beginning of year				337,903				378,734	337,903	378,734	273,630
CASH AND CASH EQUIVALENTS AT END OF PERIOD	435,599				337,903				435,599	337,903	378,734
Supplemental disclosure:
Dividends declared, not paid	2,013				2,013				2,013	2,013	0
Stock consideration granted for acquisitions									0	217,202	92,258
Subsidiaries
Cash flows from investing activities:
Repayment of advances from subsidiaries									0	0	6,000
Dividend Declared
Supplemental disclosure:
Dividends declared, not paid	2,013				2,013				2,013	2,013	0
Parent
Cash flows from operating activities:
Net income									219,923	137,938	149,129
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed earnings of subsidiaries									(75,368)	(73,430)	(34,307)
Gain on extinguishment of debt									0	0	(375)
Increase in accrued expenses and other liabilities									8,723	8,419	3,274
Increase in other assets									(13,069)	(19,168)	(12,248)
Excess tax (expense) benefit from stock based compensation									312	(93)	270
Other, net									12,632	6,375	4,103
NET CASH PROVIDED BY OPERATING ACTIVITIES									153,153	60,041	109,846
Cash flows from investing activities:
Capital contributions to subsidiaries									(34,000)	(70,000)	(46,583)
Net assets acquired									0	(41,982)	(594)
NET CASH USED BY INVESTING ACTIVITIES									(34,000)	(111,982)	(41,177)
Cash flows from financing activities:
Proceeds on short-term revolving credit line									0	0	0
Proceeds from other borrowings									147,614	0	0
Repayments on short-term revolving credit line									0	0	0
Repayments of other borrowings									(44,417)	(7,000)	(20,023)
Payment for the redemption of debt									0	0	(2,500)
Cash dividends paid									(48,559)	(31,906)	(24,607)
Proceeds from issuance of preferred stock									0	110,705	0
Proceeds from issuance of common stock									1,311	3,004	661
NET CASH PROVIDED BY FINANCING ACTIVITIES									55,949	74,803	(46,469)
Net increase (decrease) in cash and cash equivalents									175,102	22,862	22,200
Cash and cash equivalents at beginning of year				$ 84,728				$ 61,866	84,728	61,866	39,666
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 259,830				$ 84,728				259,830	84,728	61,866
Supplemental disclosure:
Conversion of convertible debt to common stock									0	14,891	0
Stock consideration granted for acquisitions									$ 0	$ 217,202	$ 92,258

LEASES (Schedule of ROU Assets and Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 22,630	$ 21,557
Operating lease liabilities	$ 26,125	$ 25,337
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued expenses and other liabilities	Accrued expenses and other liabilities

LEASES (Schedule of Lease Costs and Supplemental Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lease Cost
Operating lease cost	$ 8,013	$ 6,071	$ 6,031
Variable lease cost	47	72	145
Total lease cost	8,060	6,143	6,176
Supplemental Information
Noncash reduction of ROU assets	1,244	1,037	1,771
Noncash reduction lease liabilities	$ 0	$ 389	$ 1,789
Supplemental balance sheet information
Weighted-average remaining operating lease term (in years)	5 years 11 months 26 days
Weighted-average discount rate for operating leases	2.69%

LEASES (Narrative) (Details) $ in Thousands	12 Months Ended
LEASES (Narrative) (Details) $ in Thousands	Dec. 31, 2021 USD ($) lease	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Leases [Abstract]
Number of impaired leases \| lease	1
Impairment loss \| $	$ 0	$ 360	$ 0

LEASES (Schedule of Minimum Payments for Operating Leases) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2022	$ 6,595
2023	5,154
2024	3,484
2025	3,363
2026	2,940
Thereafter	6,837
Total lease payments	28,373
Less interest	(2,248)
Operating lease liabilities	$ 26,125	$ 25,337

SUMMARY OF QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Net interest income	$ 137,194	$ 142,543	$ 141,218	$ 139,605	$ 132,575	$ 122,497	$ 124,146	$ 112,511	$ 560,560	$ 491,729	$ 433,729
Provision (benefit) for credit losses	(5,313)	(4,534)	(7,080)	(648)	17,072	1,678	26,796	21,520	(17,575)	67,066	16,657
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	142,507	147,077	148,298	140,253	115,503	120,819	97,350	90,991	578,135	424,663	417,072
Noninterest income	32,730	32,724	33,164	30,317	32,621	31,216	30,637	25,817	128,935	120,291	116,208
Noninterest expense	115,386	110,627	103,376	102,423	99,269	90,396	90,439	90,859	431,812	370,963	349,161
Income taxes	10,271	13,250	16,481	15,333	9,046	13,681	7,417	5,909	55,335	36,053	34,990
NET INCOME	49,580	55,924	61,605	52,814	39,809	47,958	30,131	20,040	219,923	137,938	149,129
Preferred dividends	(2,012)	(2,013)	(2,012)	(2,013)	(2,014)	(2,437)	0	0	(8,050)	(4,451)	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 47,568	$ 53,911	$ 59,593	$ 50,801	$ 37,795	$ 45,521	$ 30,131	$ 20,040	$ 211,873	$ 133,487	$ 149,129
Per share:
Earnings per share — basic (in dollars per share)	$ 1.12	$ 1.27	$ 1.41	$ 1.20	$ 0.98	$ 1.23	$ 0.82	$ 0.54	$ 5.01	$ 3.58	$ 4.14
Earnings per share — diluted (in dollars per share)	1.12	1.27	1.41	1.20	0.98	1.23	0.82	0.54	5.00	3.57	4.14
Cash dividends declared on common stock (in dollars per share)	0.27	0.25	0.22	0.22	0.20	0.20	0.20	0.20	$ 0.96	$ 0.80	$ 0.68
Book value per common share (in dollars per share)	$ 49.00	$ 48.79	$ 48.50	$ 46.13	$ 46.77	$ 46.11	$ 44.42	$ 42.21
Weighted average common shares outstanding (in shares)	42,309,003	42,302,780	42,242,893	42,174,092	38,420,063	36,941,110	36,880,325	36,820,972	42,260,000	37,269,000	35,991,000
Weighted average diluted common shares outstanding (in shares)	42,479,442	42,415,993	42,359,873	42,335,747	38,534,082	36,995,572	36,915,630	36,895,591	42,411,000	37,357,000	36,062,000