SEACOAST BANKING CORP OF FLORIDA, 10-Q filed on 11/6/2024
Quarterly Report
v3.24.3
Cover Page
 9 Months Ended
Sep. 30, 2024
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Sep. 30, 2024
Document Transition Report false
Entity File Number 0-13660
Entity Registrant Name Seacoast Banking Corporation of Florida
Entity Incorporation, State or Country Code FL
Entity Tax Identification Number 59-2260678
Entity Address, Address Line One 815 COLORADO AVENUE,
Entity Address, City or Town STUART
Entity Address, State or Province FL
Entity Address, Postal Zip Code 34994
City Area Code (772)
Local Phone Number 287-4000
Title of 12(b) Security Common Stock
Trading Symbol SBCF
Security Exchange Name NASDAQ
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
Entity Shell Company false
Entity Common Stock, Shares Outstanding 85,441,001
Amendment Flag false
Document Fiscal Year Focus 2024
Document Fiscal Period Focus Q3
Entity Central Index Key 0000730708
Current Fiscal Year End Date --12-31
v3.24.3
CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Income Statement [Abstract]        
Interest and fees on loans $ 150,980 $ 149,871 $ 445,367 $ 433,304
Interest and dividends on securities 25,997 21,498 72,612 61,842
Interest on interest bearing deposits and other investments 7,138 8,477 21,650 16,974
Total Interest Income 184,115 179,846 539,629 512,120
Interest on deposits 51,963 38,396 150,816 81,612
Interest on time certificates 19,002 16,461 54,051 36,490
Interest on borrowed money 6,485 5,683 18,595 16,597
Total Interest Expense 77,450 60,540 223,462 134,699
Net Interest Income 106,665 119,306 316,167 377,421
Provision for credit losses 6,273 2,694 12,559 33,528
Net Interest Income after Provision for Credit Losses 100,392 116,612 303,608 343,893
Noninterest income:        
Service charges on deposit accounts 5,412 4,648 15,714 13,450
Interchange income 1,911 1,684 5,739 11,444
Wealth management income 3,843 3,138 11,149 9,519
Mortgage banking fees 485 410 1,448 1,412
Insurance agency income 1,399 1,183 4,045 3,444
SBA gains 391 613 1,824 1,184
BOLI income 2,578 2,197 7,438 6,181
Other 7,473 4,307 18,631 15,636
Noninterest income, excluding securities gains (losses) 23,492 18,180 65,988 62,270
Securities gains (losses), net 187 (387) 372 (456)
Total Noninterest Income 23,679 17,793 66,360 61,814
Noninterest expense:        
Salaries and wages 40,697 46,431 119,938 139,202
Employee benefits 6,955 7,206 21,705 23,240
Outsourced data processing costs 8,003 8,714 28,331 43,489
Occupancy 7,096 7,758 22,313 24,360
Furniture and equipment 2,060 2,052 6,027 6,664
Marketing 2,729 1,876 8,650 6,161
Legal and professional fees 2,708 2,679 6,841 14,220
FDIC assessments 1,882 2,258 6,171 5,817
Amortization of intangibles 6,002 7,457 18,297 21,838
Other real estate owned expense and net loss on sale 491 274 356 412
Provision for credit losses on unfunded commitments 250 0 751 1,239
Other 5,945 7,210 18,346 22,613
Total Noninterest Expense 84,818 93,915 257,726 309,255
Income Before Income Taxes 39,253 40,490 112,242 96,452
Provision for income taxes 8,602 9,076 25,341 21,962
Net Income $ 30,651 $ 31,414 $ 86,901 $ 74,490
Net income per share of common stock        
Diluted (in dollars per share) $ 0.36 $ 0.37 $ 1.02 $ 0.89
Basic (in dollars per share) $ 0.36 $ 0.37 $ 1.03 $ 0.89
Average common shares outstanding        
Diluted (in shares) 85,069 85,666 84,915 83,993
Basic (in shares) 84,434 85,142 84,319 83,457
v3.24.3
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Statement of Comprehensive Income [Abstract]        
Net Income $ 30,651 $ 31,414 $ 86,901 $ 74,490
Other comprehensive income (loss):        
Unrealized gains (losses) on available-for-sale securities, net of tax expense of $14.4 million and $10.6 million for the three and nine months ended September 30, 2024, respectively, and net of tax benefit of $8.1 million and $9.3 million for the three and nine months ended September 30, 2023, respectively 44,972 (26,065) 33,477 (29,764)
Amortization of unrealized losses on securities transferred to held-to-maturity, net of tax benefit of $3 thousand and $11 thousand for the three and nine months ended September 30, 2024, respectively, and net of tax benefit of $3 thousand and $10 thousand for the three and nine months ended September 30, 2023, respectively (11) (11) (31) (32)
Reclassification adjustment for losses (gains) included in net income, net of tax benefit of $68 thousand and $1.0 million for the three and nine months ended September 30, 2024, respectively, and net of tax expense of $1 thousand for the nine months ended September 30, 2023 201 0 3,006 (4)
Unrealized (losses) gains on derivatives designated as fair value hedges, net of reclassifications to income, net of tax benefit of $0.8 million and $0.6 million for the three and nine months ended September 30, 2024, respectively, and net of tax expense of $0.2 million and $1.8 million for the three and nine months ended September 30, 2023, respectively (2,322) 504 (1,744) 5,236
Unrealized gains on derivatives designated as cash flow hedges, net of reclassifications to income, net of tax expense of $43 thousand and $114 thousand for the three and nine months ended September 30, 2023, respectively 0 125 0 326
Total other comprehensive income (loss) 42,840 (25,447) 34,708 (24,238)
Comprehensive Income $ 73,491 $ 5,967 $ 121,609 $ 50,252
v3.24.3
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Statement of Comprehensive Income [Abstract]        
Unrealized gains (losses) on available-for-sale securities, tax (benefit) expense $ 14,400 $ (8,100) $ 10,600 $ (9,300)
Amortization of unrealized losses on securities transferred to held-to-maturity, tax expense (benefit) (3) (3) (11) (10)
Reclassification adjustment for losses (gains) included in net income, tax expense (benefit) (68)   (1,000) 1
Unrealized gains on derivatives designated as fair value hedges, net of reclassifications, tax expense (benefit) $ (800) 200 $ (600) 1,800
Unrealized gains on derivatives designated as cash flow hedges, net of reclassifications, tax expense (benefit)   $ 43   $ 114
v3.24.3
CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Assets    
Cash and due from banks $ 182,743 $ 167,511
Interest bearing deposits with other banks 454,315 279,671
Total cash and cash equivalents 637,058 447,182
Time deposits with other banks 5,207 5,857
Debt securities:    
Securities available-for-sale (at fair value) 2,160,055 1,836,020
Securities held-to-maturity (fair value $538.5 million at September 30, 2024 and $558.4 million at December 31, 2023) 646,050 680,313
Total debt securities 2,806,105 2,516,333
Loans held for sale 11,039 4,391
Loans 10,205,281 10,062,940
Allowance for credit losses (140,469) (148,931)
Loans, net of allowance for credit losses 10,064,812 9,914,009
Bank premises and equipment, net 108,776 113,304
Other real estate owned 6,421 7,560
Goodwill 732,417 732,417
Other intangible assets, net 77,431 95,645
Bank owned life insurance 306,379 298,974
Net deferred tax assets 94,820 113,232
Other assets 317,906 331,345
Total Assets 15,168,371 14,580,249
Liabilities    
Deposits 12,243,585 11,776,935
Securities sold under agreements to repurchase 210,176 374,573
Federal Home Loan Bank (“FHLB”) borrowings 245,000 50,000
Long-term debt, net 106,800 106,302
Other liabilities 168,960 164,353
Total Liabilities 12,974,521 12,472,163
Shareholders’ Equity    
Common stock, par value $0.10 per share, authorized 120,000,000 shares, issued 86,142,157 and outstanding 85,441,001 at September 30, 2024, and authorized 120,000,000, issued 85,480,183 and outstanding 84,861,498 shares at December 31, 2023 8,614 8,486
Additional paid-in capital 1,821,050 1,808,883
Retained earnings 508,036 467,305
Treasury stock (18,680) (16,710)
Total shareholders' equity, before accumulated other comprehensive (loss) income, net 2,319,020 2,267,964
Accumulated other comprehensive loss, net (125,170) (159,878)
Total Shareholders’ Equity 2,193,850 2,108,086
Total Liabilities and Shareholders’ Equity $ 15,168,371 $ 14,580,249
v3.24.3
CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Statement of Financial Position [Abstract]    
Held to maturity, fair value $ 538,485 $ 558,359
Common stock, par value (in dollars per share) $ 0.10 $ 0.10
Common stock, shares authorized (in shares) 120,000,000 120,000,000
Common stock, shares issued (in shares) 86,142,157 85,480,183
Common stock, shares outstanding (in shares) 85,441,001 84,861,498
v3.24.3
CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Cash Flows from Operating Activities    
Net income $ 86,901 $ 74,490
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 6,381 6,090
Accretion of discounts on securities, net (2,371) (798)
Amortization of operating lease right-of-use assets 6,148 5,993
Other amortization and accretion, net (14,678) (14,952)
Stock based compensation 10,233 10,290
Origination of loans designated for sale (82,146) (82,695)
Sale of loans designated for sale 79,187 86,221
Provision for credit losses 12,559 33,528
Deferred income taxes 7,321 (3,348)
(Gains) losses on securities (372) 456
Gains on sale of loans (4,251) (2,993)
Losses (gains) on sale and write-downs of other real estate owned 134 (37)
Losses on disposition of fixed assets and write-downs upon transfer of bank premises to other real estate owned 284 1,755
Changes in operating assets and liabilities, net of effects from acquired companies:    
Net decrease in other assets 24,973 5,046
Net increase in other liabilities 4,606 1,684
Net cash provided by operating activities 134,909 120,730
Cash Flows from Investing Activities    
Maturities and repayments of debt securities available-for-sale 269,277 153,866
Maturities and repayments of debt securities held-to-maturity 34,361 58,357
Proceeds from sale of debt securities available-for-sale 104,425 30,490
Purchases of debt securities available-for-sale (651,360) (28,095)
Maturities and redemptions of time deposits with other banks 4,132 1,492
Purchases of time deposits with other banks (3,482) (2,613)
Net new loans and principal repayments (158,095) 159,298
Proceeds from the sale of loans held for investment 10,905 0
Proceeds from sale of other real estate owned 2,841 577
Proceeds from sale of FHLB and Federal Reserve Bank Stock 11,310 73,473
Purchase of FHLB and Federal Reserve Bank Stock (20,743) (90,896)
Proceeds from sale of Visa Class B shares 4,104 0
Net cash from bank acquisitions 0 141,674
Additions to bank premises and equipment (3,884) (9,665)
Net cash (used in) provided by investing activities (396,209) 487,958
Cash Flows from Financing Activities    
Net increase in deposits 466,651 6,898
Net (decrease) increase in repurchase agreements (164,397) 104,421
Net decrease in FHLB borrowings with original maturities of three months or less 0 (220,000)
Repayments of FHLB borrowings with original maturities of more than three months (160,000) (75,000)
Proceeds from FHLB borrowings with original maturities of more than three months 355,000 110,000
Stock based employee benefit plans 972 4,316
Repurchase of common stock (880) (45)
Dividends paid (46,170) (45,236)
Net cash provided by (used in) financing activities 451,176 (114,646)
Net increase in cash and cash equivalents 189,876 494,042
Cash and cash equivalents at beginning of period 447,182 201,940
Cash and cash equivalents at end of period 637,058 695,982
Supplemental disclosure of cash flow information:    
Cash paid for interest 219,201 124,927
Cash paid (refunded) for taxes, net 10,888 (7,920)
Recognition of operating lease right-of-use assets, other than through bank acquisitions, net of terminations 0 2,068
Recognition of operating lease liabilities, other than through bank acquisitions, net of terminations 0 2,080
Supplemental disclosure of non-cash investing activities:    
Transfers from loans to other real estate owned 953 0
Transfers from bank premises to other real estate owned $ 883 $ 5,455
v3.24.3
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Paid-in Capital
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2022   71,618,000        
Beginning balance at Dec. 31, 2022 $ 1,607,775 $ 7,162 $ 1,377,802 $ 423,863 $ (13,019) $ (188,033)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) 50,252     74,490   (24,238)
Stock based compensation expense (in shares)   30,000        
Stock based compensation expense 10,290   10,290      
Common stock transactions related to stock based employee benefit plans (in shares)   713,000        
Common stock transactions related to stock based employee benefit plans 4,316 $ 74 5,258   (1,016)  
Repurchase of common stock (in shares)   (3,000)        
Repurchase of common stock (45)   (45)      
Issuance of common stock, pursuant to acquisition (in shares)   12,792,000        
Issuance of common stock, pursuant to acquisition 410,738 $ 1,279 409,459      
Conversion of options, pursuant to acquisition 10,304   10,304      
Dividends on common stock (45,236)     (45,236)    
Increase (decrease) in shares during period (in shares)   13,532,000        
Increase (decrease) in stockholders' equity during period 440,619 $ 1,353 435,266 29,254 (1,016) (24,238)
Ending balance (in shares) at Sep. 30, 2023   85,150,000        
Ending balance at Sep. 30, 2023 2,048,394 $ 8,515 1,813,068 453,117 (14,035) (212,271)
Beginning balance (in shares) at Jun. 30, 2023   85,086,000        
Beginning balance at Jun. 30, 2023 2,054,032 $ 8,509 1,809,431 437,087 (14,171) (186,824)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) 5,967     31,414   (25,447)
Stock based compensation expense (in shares)   30,000        
Stock based compensation expense 3,194   3,194      
Common stock transactions related to stock based employee benefit plans (in shares)   34,000        
Common stock transactions related to stock based employee benefit plans 585 $ 6 443   136  
Dividends on common stock (15,384)     (15,384)    
Increase (decrease) in shares during period (in shares)   64,000        
Increase (decrease) in stockholders' equity during period (5,638) $ 6 3,637 16,030 136 (25,447)
Ending balance (in shares) at Sep. 30, 2023   85,150,000        
Ending balance at Sep. 30, 2023 $ 2,048,394 $ 8,515 1,813,068 453,117 (14,035) (212,271)
Beginning balance (in shares) at Dec. 31, 2023 84,861,498 84,861,000        
Beginning balance at Dec. 31, 2023 $ 2,108,086 $ 8,486 1,808,883 467,305 (16,710) (159,878)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) 121,609     86,901   34,708
Stock based compensation expense 10,233   10,233      
Common stock transactions related to stock based employee benefit plans (in shares)   620,000        
Common stock transactions related to stock based employee benefit plans 972 $ 128 1,934   (1,090)  
Repurchase of common stock (in shares)   (40,000)        
Repurchase of common stock (880)       (880)  
Dividends on common stock (46,170)     (46,170)    
Increase (decrease) in shares during period (in shares)   580,000        
Increase (decrease) in stockholders' equity during period $ 85,764 $ 128 12,167 40,731 (1,970) 34,708
Ending balance (in shares) at Sep. 30, 2024 85,441,001 85,441,000        
Ending balance at Sep. 30, 2024 $ 2,193,850 $ 8,614 1,821,050 508,036 (18,680) (125,170)
Beginning balance (in shares) at Jun. 30, 2024   85,299,000        
Beginning balance at Jun. 30, 2024 2,130,381 $ 8,530 1,815,800 492,805 (18,744) (168,010)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) 73,491     30,651   42,840
Stock based compensation expense 4,128   4,128      
Common stock transactions related to stock based employee benefit plans (in shares)   142,000        
Common stock transactions related to stock based employee benefit plans 1,270 $ 84 1,122   64  
Dividends on common stock (15,420)     (15,420)    
Increase (decrease) in shares during period (in shares)   142,000        
Increase (decrease) in stockholders' equity during period $ 63,469 $ 84 5,250 15,231 64 42,840
Ending balance (in shares) at Sep. 30, 2024 85,441,001 85,441,000        
Ending balance at Sep. 30, 2024 $ 2,193,850 $ 8,614 $ 1,821,050 $ 508,036 $ (18,680) $ (125,170)
v3.24.3
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Statement of Stockholders' Equity [Abstract]        
Dividends on common stock (in dollars per share) $ 0.18 $ 0.18 $ 0.54 $ 0.53
Repurchase of common stock     $ (880) $ (45)
v3.24.3
Basis of Presentation
 9 Months Ended
Sep. 30, 2024
Accounting Policies [Abstract]  
Basis of Presentation Basis of Presentation
Basis of Presentation: The accompanying unaudited consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.
Operating results for the three and nine months ended September 30, 2024, are not necessarily indicative of the results that may be expected for the year ending December 31, 2024, or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023.
Use of Estimates: The preparation of these consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well-controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues, and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include the determination of the allowance for credit losses, acquisition accounting and purchased loans, intangible assets and impairment testing, and other fair value measurements.
Issued Accounting Standards
In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures.” ASU 2023-07 requires disclosure of significant segment expenses and other segment items on an interim and annual basis. The standard is effective for fiscal years beginning after December 15, 2023 and for interim periods beginning after December 15, 2024. The Company is evaluating the impact of the changes to its existing disclosures.
In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures.” ASU 2023-09 requires disclosure of specific categories in the income tax rate reconciliation and requires additional information for reconciling items that meet a quantitative threshold. The standard requires an annual disclosure of income taxes paid, net of refunds received, disaggregated by federal, state and foreign taxes and to disaggregate the information by jurisdiction based on a quantitative threshold. The standard is effective for fiscal years beginning after December 15, 2024 and early adoption is permitted. The Company does not expect the adoption of the standard to have a material impact on its disclosures.
In November 2024, the FASB issued ASU 2024-03, “Expense Disaggregation Disclosures.” ASU 2024-03 requires disclosure to disaggregate prescribed expenses within relevant income statement captions. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its existing disclosures.
v3.24.3
Earnings per Share
 9 Months Ended
Sep. 30, 2024
Earnings Per Share [Abstract]  
Earnings per Share Earnings per Share
Basic earnings per common share are computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share are based on the weighted-average number of common shares outstanding during each period, plus common share equivalents, calculated for share-based awards outstanding using the treasury stock method.

For the three and nine months ended September 30, 2024, options to purchase shares of the Company’s common stock totaling 327,006 and 328,045, respectively, were anti-dilutive. For the three and nine months ended September 30, 2023, 368,968 options to purchase shares of the Company’s common stock were anti-dilutive.
Three Months Ended September 30,Nine Months Ended September 30,
(Dollars in thousands, except per share data)2024202320242023
Basic earnings per share  
Net income$30,651 $31,414 $86,901 $74,490 
Average common shares outstanding84,434 85,142 84,319 83,457 
Net income per share$0.36 $0.37 $1.03 $0.89 
Diluted earnings per share
Net income$30,651 $31,414 $86,901 $74,490 
Average common shares outstanding84,434 85,142 84,319 83,457 
Add: Dilutive effect of employee restricted stock and stock options635 524 596 536 
Average diluted shares outstanding85,069 85,666 84,915 83,993 
Net income per share$0.36 $0.37 $1.02 $0.89 
v3.24.3
Securities
 9 Months Ended
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Securities Securities
The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale (“AFS”) and held-to-maturity (“HTM”) at September 30, 2024 and December 31, 2023 are summarized as follows:
 September 30, 2024
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross Unrealized
Losses		Fair
Value
Available-for-Sale Debt Securities   
U.S. Treasury securities and obligations of U.S. government agencies$30,542 $375 $(335)$30,582 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities1,558,076 8,560 (158,627)1,408,009 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities299,975 3,860 (11,586)292,249 
Private mortgage-backed securities and collateralized mortgage obligations136,038 288 (7,028)129,298 
Collateralized loan obligations286,042 648 (158)286,532 
Obligations of state and political subdivisions7,137 9 (1,216)5,930 
Other debt securities7,389 66 — 7,455 
Totals$2,325,199 $13,806 $(178,950)$2,160,055 
Held-to-Maturity Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities$557,119 $— $(99,722)$457,397 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities88,931 — (7,843)81,088 
Totals$646,050 $— $(107,565)$538,485 
 December 31, 2023
(In thousands)Amortized
Cost		Gross Unrealized
Gains		Gross Unrealized
Losses		Fair
Value
Available-for-Sale Debt Securities    
U.S. Treasury securities and obligations of U.S. government agencies$37,718 $205 $(478)$37,445 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities1,152,753 780 (184,152)969,381 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities385,013 2,824 (19,565)368,272 
Private mortgage-backed securities and collateralized mortgage obligations135,878 36 (10,911)125,003 
Collateralized loan obligations300,855 11 (1,411)299,455 
Obligations of state and political subdivisions10,486 — (1,096)9,390 
Other debt securities26,599 576 (101)27,074 
Totals$2,049,302 $4,432 $(217,714)$1,836,020 
Held-to-Maturity Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities$590,676 $— $(111,746)$478,930 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities89,637 — (10,208)79,429 
Totals$680,313 $— $(121,954)$558,359 
During the three months ended September 30, 2024, debt securities with a fair value of $17.6 million were sold, with gross losses of $0.3 million. There were no sales of debt securities during the three months ended September 30, 2023. During the
nine months ended September 30, 2024, debt securities with a fair value of $104.4 million were sold, with gross losses of $4.0 million. During the nine months ended September 30, 2023, debt securities with a fair value of $22.1 million obtained in the acquisition of Professional Holding Corp. (“Professional”) were sold. No gain or loss was recognized on the sale. There were $8.4 million in other sales of securities during the nine months ended September 30, 2023, with gross gains of $24 thousand and gross losses of $19 thousand. Included in “Securities gains (losses), net” are increases of $0.5 million and $0.3 million, respectively, for the three and nine months ended September 30, 2024, and decreases of $0.4 million and $0.5 million, respectively, for the three and nine months ended September 30, 2023 in the value of investments in mutual funds that invest in Community Reinvestment Act (“CRA”)-qualified debt securities.
At September 30, 2024, debt securities with a fair value of $1.5 billion were pledged primarily as collateral for public deposits and secured borrowings.
The amortized cost and fair value of securities HTM and AFS as of September 30, 2024, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.
 Held-to-MaturityAvailable-for-Sale
(In thousands)Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
Due in less than one year$— $— $999 $999 
Due after one year through five years— — 6,163 6,187 
Due after five years through ten years— — 8,373 8,413 
Due after ten years— — 22,144 20,913 
 — — 37,679 36,512 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities557,119 457,397 1,558,076 1,408,009 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities88,931 81,088 299,975 292,249 
Private mortgage-backed securities and collateralized mortgage obligations— — 136,038 129,298 
Collateralized loan obligations— — 286,042 286,532 
Other debt securities— — 7,389 7,455 
Totals$646,050 $538,485 $2,325,199 $2,160,055 
The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models, or discounted cash flow analyses, or using observable market data. The tables below indicate the fair value of AFS debt securities with unrealized losses for which no allowance for credit losses has been recorded.
 September 30, 2024
 Less Than 12 Months12 Months or Longer
Total1
(In thousands)Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses
U.S. Treasury securities and obligations of U.S. government agencies$372 $(1)$20,513 $(334)$20,885 $(335)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities103,020 (449)828,586 (158,178)931,606 (158,627)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities— — 198,386 (11,586)198,386 (11,586)
Private mortgage-backed securities and collateralized mortgage obligations— — 106,748 (7,028)106,748 (7,028)
Collateralized loan obligations53,893 (139)7,723 (19)61,616 (158)
Obligations of state and political subdivisions— — 5,588 (1,216)5,588 (1,216)
Totals$157,285 $(589)$1,167,544 $(178,361)$1,324,829 $(178,950)
1Comprised of 350 individual securities.
 December 31, 2023
 Less Than 12 Months12 Months or Longer
Total1
(In thousands)Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses
U.S. Treasury securities and obligations of U.S. government agencies$24,933 $(143)$3,594 $(335)$28,527 $(478)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities91,867 (9,320)826,324 (174,832)918,191 (184,152)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities24,251 (1,270)262,666 (18,295)286,917 (19,565)
Private mortgage-backed securities and collateralized mortgage obligations3,945 (69)119,475 (10,842)123,420 (10,911)
Collateralized loan obligations60,087 (223)232,545 (1,188)292,632 (1,411)
Obligations of state and political subdivisions326 (2)9,064 (1,094)9,390 (1,096)
Other debt securities10,579 (101)— — 10,579 (101)
Totals$215,988 $(11,128)$1,453,668 $(206,586)$1,669,656 $(217,714)
1Comprised of 504 individual securities.
At September 30, 2024, the Company had unrealized losses of $0.3 million on U.S. Treasury securities and obligations of U.S. government agencies having a fair value of $20.9 million. These securities are either explicitly or implicitly guaranteed by the full faith and credit of the U.S. government. The Company does not expect individual securities issued by the U.S. Treasury, a U.S. agency, or a sponsored U.S. agency to incur future losses of principal. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded.
At September 30, 2024, the Company had unrealized losses of $170.2 million on commercial and residential mortgage-backed securities and collateralized mortgage obligations issued by government-sponsored entities having a fair value of $1.1 billion. These securities are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments and the high credit rating of the portfolio provide a sufficient basis for the current expectation that there is no risk of loss if default were to occur. Based on the assessment of all relevant factors, the Company believes that the unrealized loss positions on these debt securities are a function of changes in
investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded.
At September 30, 2024, the Company had $7.0 million of unrealized losses on private label residential and commercial mortgage-backed securities and collateralized mortgage obligations having a fair value of $106.7 million. The securities have weighted average credit support of 22%. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded.
At September 30, 2024, the Company had $0.2 million of unrealized losses in floating rate collateralized loan obligations (“CLOs”) having a fair value of $61.6 million. CLOs are special purpose vehicles and those in which the Company has invested are nearly all first-lien, broadly syndicated corporate loans across a diversified band of industries while providing support to senior tranche investors. As of September 30, 2024, all positions held by the Company are in AAA and AA tranches, with weighted average credit support of 38% and 30%, respectively. The Company evaluates the securities for potential credit losses by modeling expected loan-level defaults, recoveries, and prepayments for each CLO security. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. Therefore, at September 30, 2024, no allowance for credit losses has been recorded.
At September 30, 2024, the Company had $1.2 million of unrealized losses on municipal securities having a fair value of $5.6 million. These securities are highly rated issuances of state or local municipalities, all of which are continuing to make timely contractual payments. Based on the evaluation of available information relevant to collectibility, the Company believes that the unrealized loss positions on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality, and expects to recover the entire amortized cost basis of these securities. As a result, as of September 30, 2024, no allowance for credit losses has been recorded.
All HTM debt securities are issued by government-sponsored entities, which are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. The implied government guarantee of principal and interest payments, and the high credit rating of the HTM portfolio provide sufficient basis for the current expectation that there is no risk of loss if a default were to occur. As a result, as of September 30, 2024, no allowance for credit losses has been recorded. The Company has the intent and ability to hold these securities until maturity.
Included in Other Assets at September 30, 2024 and December 31, 2023 is $77.2 million and $67.7 million, respectively, of FHLB and Federal Reserve Bank (“FRB”) stock stated at par value. The Company has not identified events or changes in circumstances which may have a significant adverse effect on the fair value of these cost method investment securities. Accrued interest receivable on AFS and HTM debt securities of $8.4 million and $1.1 million, respectively, at September 30, 2024, and $7.9 million and $1.1 million, respectively, at December 31, 2023, is included in Other Assets. Also included in Other Assets are investments in CRA-qualified mutual funds carried at fair value of $13.9 million and $13.6 million at September 30, 2024 and December 31, 2023, respectively.
At December 31, 2023, the Company held 11,330 shares of Visa Class B stock. During the nine months ended September 30, 2024, the Company sold all of its Visa Class B stock, receiving net proceeds of $4.1 million. The ownership of Visa stock was related to prior ownership in Visa’s network while Visa operated as a cooperative, and was recorded on the Company’s financial records at a zero basis.
v3.24.3
Loans
 9 Months Ended
Sep. 30, 2024
Receivables [Abstract]  
Loans Loans
Loans held for investment are categorized into the following segments:
•Construction and land development: Loans are extended to both commercial and consumer customers which are collateralized by and for the purpose of funding land development and construction projects, including 1-4 family residential, multi-family, and non-farm residential property where the primary source of repayment is from proceeds of the sale, refinancing or permanent financing of the property.
•Commercial real estate - owner occupied: Loans are extended to commercial customers for the purpose of acquiring or refinancing real estate to be occupied by the borrower’s business. These loans are collateralized by the subject property and the repayment of these loans is largely dependent on the performance of the company occupying the property.
•Commercial real estate - non-owner occupied: Loans are extended to commercial customers for the purpose of acquiring or refinancing commercial property where occupancy by the borrower is not their primary intent. These loans are viewed primarily as cash flow loans, collateralized by the subject property, and the repayment of these loans is largely dependent on rental income from third parties or from the sale of the property.
•Residential real estate: Loans are extended to consumer customers and collateralized primarily by 1-4 family residential properties and include fixed and variable rate mortgages, home equity mortgages, and home equity lines of credit. Loans are primarily written based on conventional loan agency guidelines, including loans that exceed agency value limitations. Sources of repayment are largely dependent on the occupant of the residential property.
•Commercial and financial: Loans are extended to commercial customers. The purpose of the loans can be working capital, physical asset expansion, asset acquisition, or other business purposes. Loans may be collateralized by assets owned by the borrower or the borrower’s business. Commercial loans are based primarily on the historical and projected cash flow of the borrower’s business and secondarily on the capacity of credit enhancements, guarantees, and underlying collateral provided by the borrower.
•Consumer: Loans are extended to consumer customers. The segment includes both installment loans and lines of credit which may be collateralized or non-collateralized.
The following tables present net loan balances by segment for portfolio loans, purchased credit deteriorated loans (“PCD”) and loans purchased which are not considered credit deteriorated (“Non-PCD”) as of:

 September 30, 2024
(In thousands)Portfolio LoansAcquired Non-PCD LoansPCD LoansTotal
Construction and land development$495,458 $99,756 $539 $595,753 
Commercial real estate - owner occupied1,150,809 493,986 32,019 1,676,814 
Commercial real estate - non-owner occupied2,228,137 1,214,092 130,847 3,573,076 
Residential real estate1,811,941 734,399 18,563 2,564,903 
Commercial and financial1,332,939 213,109 29,180 1,575,228 
Consumer158,902 60,293 312 219,507 
Totals$7,178,186 $2,815,635 $211,460 $10,205,281 
 December 31, 2023
(In thousands)Portfolio LoansAcquired Non-PCD LoansPCD LoansTotal
Construction and land development$519,426 $247,654 $542 $767,622 
Commercial real estate - owner occupied1,079,633 552,627 38,021 1,670,281 
Commercial real estate - non-owner occupied1,844,588 1,323,222 152,080 3,319,890 
Residential real estate1,714,748 710,129 20,815 2,445,692 
Commercial and financial1,237,090 318,683 52,115 1,607,888 
Consumer175,969 74,854 744 251,567 
Totals$6,571,454 $3,227,169 $264,317 $10,062,940 
The amortized cost basis of loans included net deferred costs of $44.9 million at September 30, 2024 and $43.1 million at December 31, 2023. At September 30, 2024, the remaining fair value adjustments on acquired loans were $141.8 million, or 4.5% of the outstanding acquired loan balances, compared to $174.0 million, or 4.8% of the acquired loan balances at December 31, 2023. The discount is accreted into interest income over the remaining lives of the related loans on a level yield basis. During the nine months ended September 30, 2024, $9.1 million in loans previously held for investment were sold, resulting in a net gain of $0.9 million.
Accrued interest receivable is included within Other Assets and was $38.8 million and $39.4 million at September 30, 2024 and December 31, 2023, respectively.
The following tables present the status of net loan balances as of September 30, 2024 and December 31, 2023.
 September 30, 2024
(In thousands)CurrentAccruing
30-59 Days
Past Due		Accruing
60-89 Days
Past Due		Accruing
Greater
Than
90 Days		NonaccrualTotal
Portfolio Loans      
Construction and land development$495,240 $— $— $— $218 $495,458 
Commercial real estate - owner occupied1,147,263 496 835 — 2,215 1,150,809 
Commercial real estate - non-owner occupied2,224,884 — — — 3,253 2,228,137 
Residential real estate1,789,154 11,571 2,175 — 9,041 1,811,941 
Commercial and financial1,317,596 2,844 175 148 12,176 1,332,939 
Consumer157,309 615 470 508 158,902 
Total Portfolio Loans$7,131,446 $15,526 $3,655 $148 $27,411 $7,178,186 
Acquired Non-PCD Loans
Construction and land development$97,011 $2,219 $— $— $526 $99,756 
Commercial real estate - owner occupied489,257 1,380 613 — 2,736 493,986 
Commercial real estate - non-owner occupied1,203,625 2,059 642 — 7,766 1,214,092 
Residential real estate713,224 9,684 269 646 10,576 734,399 
Commercial and financial208,981 395 749 35 2,949 213,109 
Consumer54,072 2,515 1,706 1,084 916 60,293 
 Total Acquired Non-PCD Loans$2,766,170 $18,252 $3,979 $1,765 $25,469 $2,815,635 
PCD Loans
Construction and land development$45 $400 $— $— $94 $539 
Commercial real estate - owner occupied27,304 — — — 4,715 32,019 
Commercial real estate - non-owner occupied107,265 2,554 — 3,341 17,687 130,847 
Residential real estate16,880 63 168 — 1,452 18,563 
Commercial and financial24,367 803 — 31 3,979 29,180 
Consumer253 9 — — 50 312 
Total PCD Loans$176,114 $3,829 $168 $3,372 $27,977 $211,460 
Total Loans$10,073,730 $37,607 $7,802 $5,285 $80,857 $10,205,281 
 
 December 31, 2023
(In thousands)CurrentAccruing
30-59 Days
Past Due		Accruing
60-89 Days
Past Due		Accruing
Greater
Than
90 Days		NonaccrualTotal
Portfolio Loans      
Construction and land development$519,383 $19 $— $— $24 $519,426 
Commercial real estate - owner occupied1,078,732 — — — 901 1,079,633 
Commercial real estate - non-owner occupied1,840,485 685 — — 3,418 1,844,588 
Residential real estate1,701,862 4,373 1,515 169 6,829 1,714,748 
Commercial and financial1,221,941 1,372 145 50 13,582 1,237,090 
Consumer174,798 763 290 — 118 175,969 
 Total Portfolio Loans$6,537,201 $7,212 $1,950 $219 $24,872 $6,571,454 
Acquired Non-PCD Loans
Construction and land development$245,674 $891 $289 $— $800 $247,654 
Commercial real estate - owner occupied545,374 1,691 133 — 5,429 552,627 
Commercial real estate - non-owner occupied1,310,100 11,577 — — 1,545 1,323,222 
Residential real estate704,417 2,586 888 153 2,085 710,129 
Commercial and financial315,229 50 36 35 3,333 318,683 
Consumer71,986 568 618 618 1,064 74,854 
 Total Acquired Non-PCD Loans$3,192,780 $17,363 $1,964 $806 $14,256 $3,227,169 
PCD Loans
Construction and land development$442 $100 $— $— $— $542 
Commercial real estate - owner occupied34,667 — — — 3,354 38,021 
Commercial real estate - non-owner occupied148,308 — — — 3,772 152,080 
Residential real estate18,923 497 169 154 1,072 20,815 
Commercial and financial34,337 — — — 17,778 52,115 
Consumer651 85 8 — — 744 
 Total PCD Loans$237,328 $682 $177 $154 $25,976 $264,317 
Total Loans$9,967,309 $25,257 $4,091 $1,179 $65,104 $10,062,940 
All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. Interest subsequently received on such loans is accounted for under the cost-recovery method, whereby interest income is not recognized until the loan balance is paid down to zero. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current, and future payments are reasonably assured. The Company recognized interest income of $0.2 million and $0.4 million on nonaccrual loans during the three months ended September 30, 2024 and September 30, 2023, respectively. The Company recognized $1.1 million and $0.8 million in interest income on nonaccrual loans during the nine months ended September 30, 2024 and September 30, 2023, respectively.
The following tables present net balances of loans on nonaccrual status and the related allowance for credit losses, if any, as of:
September 30, 2024
(In thousands)Nonaccrual Loans With No Related AllowanceNonaccrual Loans With an AllowanceTotal Nonaccrual LoansAllowance for Credit Losses
Construction and land development$94 $744 $838 $177 
Commercial real estate - owner occupied2,664 7,002 9,666 1,188 
Commercial real estate - non-owner occupied25,452 3,254 28,706 1,715 
Residential real estate6,379 14,690 21,069 562 
Commercial and financial3,571 15,533 19,104 6,676 
Consumer— 1,474 1,474 221 
Totals $38,160 $42,697 $80,857 $10,539 
December 31, 2023
(In thousands)Nonaccrual Loans With No Related AllowanceNonaccrual Loans With an AllowanceTotal Nonaccrual LoansAllowance for Credit Losses
Construction and land development$— $824 $824 $— 
Commercial real estate - owner occupied4,859 4,825 9,684 41 
Commercial real estate - non-owner occupied3,938 4,797 8,735 230 
Residential real estate1,792 8,194 9,986 58 
Commercial and financial4,868 29,825 34,693 2,319 
Consumer— 1,182 1,182 257 
Totals$15,457 $49,647 $65,104 $2,905 

Loans by Risk Rating
The Company utilizes an internal asset classification system as a means of identifying problem and potential problem loans. The following classifications are used to categorize loans under the internal classification system:
•Pass: Loans that are not problem loans or potential problem loans are considered to be pass-rated.
•Special Mention: Loans that do not currently expose the Company to sufficient risk to warrant classification in the Substandard or Doubtful categories, but possess weaknesses that deserve management’s close attention are deemed to be Special Mention.
•Substandard: Loans with the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected.
•Doubtful: Loans that have all the weaknesses inherent in those classified Substandard with the added characteristic that the weakness present makes collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.
The following tables present the risk rating of loans and year-to-date1 gross charge offs by year of origination as of:
September 30, 2024
(In thousands)20242023202220212020PriorRevolvingTotal
Construction and Land Development
Risk Ratings:
Pass$65,374 $130,253 $191,784 $40,202 $9,268 $41,567 $116,021 $594,469 
Special Mention— — — — — 46 — 46 
Substandard— — 188 95 — 955 — 1,238 
Doubtful— — — — — — — — 
Total$65,374 $130,253 $191,972 $40,297 $9,268 $42,568 $116,021 $595,753 
Gross Charge Offs$— $— $— $— $— $1 $— $1 
Commercial real estate - owner occupied
Risk Ratings:
Pass$137,538 $142,285 $268,777 $267,741 $160,404 $644,931 $18,034 $1,639,710 
Special Mention— — 1,640 700 2,006 6,778 351 11,475 
Substandard— 1,068 2,446 1,218 5,916 14,981 — 25,629 
Doubtful— — — — — — — — 
Total$137,538 $143,353 $272,863 $269,659 $168,326 $666,690 $18,385 $1,676,814 
Gross Charge Offs$— $— $179 $— $— $125 $— $304 
Commercial real estate - non-owner occupied
Risk Ratings:
Pass$335,560 $237,198 $863,032 $655,870 $252,978 $1,069,483 $23,468 $3,437,589 
Special Mention29 — 20,248 6,323 16,765 33,324 — 76,689 
Substandard— — 10,522 9,685 11,312 25,337 — 56,856 
Doubtful— — — — — 1,942 — 1,942 
Total$335,589 $237,198 $893,802 $671,878 $281,055 $1,130,086 $23,468 $3,573,076 
Gross Charge Offs$— $— $— $— $89 $616 $— $705 
Residential real estate
Risk Ratings:
Pass$100,622 $174,995 $500,327 $640,263 $156,208 $454,794 $506,576 $2,533,785 
Special Mention176 581 — — 23 436 6,669 7,885 
Substandard— 850 4,972 353 115 7,063 9,880 23,233 
Doubtful— — — — — — — — 
Total$100,798 $176,426 $505,299 $640,616 $156,346 $462,293 $523,125 $2,564,903 
Gross Charge Offs$— $— $— $— $40 $62 $26 $128 
Commercial and financial
Risk Ratings:
Pass$237,737 $212,954 $282,492 $248,791 $93,641 $117,672 $329,015 $1,522,302 
Special Mention— 759 2,211 3,023 557 2,154 866 9,570 
Substandard— — 9,272 11,279 6,187 10,830 5,788 43,356 
Doubtful— — — — — — — — 
Total$237,737 $213,713 $293,975 $263,093 $100,385 $130,656 $335,669 $1,575,228 
Gross Charge Offs$— $— $2,747 $10,723 $— $2,621 $695 $16,786 
Consumer
Risk Ratings:
Pass$12,300 $15,159 $39,439 $30,070 $15,109 $37,971 $63,234 $213,282 
Special Mention52 29 1,067 402 18 312 157 2,037 
Substandard81 63 2,382 1,131 116 340 75 4,188 
Doubtful— — — — — — — — 
Total$12,433 $15,251 $42,888 $31,603 $15,243 $38,623 $63,466 $219,507 
Gross Charge Offs$484 $394 $2,257 $3,132 $187 $100 $159 $6,713 
Consolidated
Total$889,469 $916,194 $2,200,799 $1,917,146 $730,623 $2,470,916 $1,080,134 $10,205,281 
Gross Charge Offs$484 $394 $5,183 $13,855 $316 $3,525 $880 $24,637 
1 Represents gross charge-offs for the nine months ended September 30, 2024.
December 31, 2023
(In thousands)20232022202120202019PriorRevolvingTotal
Construction and Land Development
Risk Ratings:
Pass$80,750 $295,043 $107,158 $20,199 $21,942 $28,902 $210,716 $764,710 
Special Mention— 1,407 — — — 393 289 2,089 
Substandard— — — — — 499 324 823 
Doubtful— — — — — — — — 
Total$80,750 $296,450 $107,158 $20,199 $21,942 $29,794 $211,329 $767,622 
Gross Charge Offs$— $— $— $— $— $— $— $— 
Commercial real estate - owner occupied
Risk Ratings:
Pass$145,642 $272,384 $281,870 $165,475 $171,897 $551,177 $36,952 $1,625,397 
Special Mention— 159 1,335 — 524 9,122 1 11,141 
Substandard— 6,024 1,057 6,991 7,116 12,491 64 33,743 
Doubtful— — — — — — — — 
Total$145,642 $278,567 $284,262 $172,466 $179,537 $572,790 $37,017 $1,670,281 
Gross Charge Offs$— $— $— $— $— $— $— $— 
Commercial real estate - non-owner occupied
Risk Ratings:
Pass$234,226 $784,525 $657,499 $288,747 $397,031 $841,062 $25,954 $3,229,044 
Special Mention— 29,381 2,092 2,964 — 12,120 — 46,557 
Substandard— 685 8,723 9,398 10,427 14,806 250 44,289 
Doubtful— — — — — — — — 
Total$234,226 $814,591 $668,314 $301,109 $407,458 $867,988 $26,204 $3,319,890 
Gross Charge Offs$— $— $11 $— $— $— $109 $120 
Residential real estate
Risk Ratings:
Pass$177,000 $450,366 $649,086 $160,889 $95,288 $413,719 $479,047 $2,425,395 
Special Mention208 — — — 58 482 4,004 4,752 
Substandard95 — 919 123 314 8,960 5,134 15,545 
Doubtful— — — — — — — — 
Total$177,303 $450,366 $650,005 $161,012 $95,660 $423,161 $488,185 $2,445,692 
Gross Charge Offs$— $— $— $44 $— $159 $153 $356 
Commercial and financial
Risk Ratings:
Pass$315,560 $336,071 $333,113 $127,069 $66,165 $89,002 $269,108 $1,536,088 
Special Mention136 2,167 1,064 1,005 503 1,103 2,191 8,169 
Substandard— 18,558 21,643 1,380 5,889 11,842 3,961 63,273 
Doubtful— — — — — 358 — 358 
Total$315,696 $356,796 $355,820 $129,454 $72,557 $102,305 $275,260 $1,607,888 
Gross Charge Offs$1,198 $117 $659 $3,007 $582 $12,584 $418 $18,565 
Consumer
Risk Ratings:
Pass$20,557 $66,699 $45,534 $19,747 $20,300 $19,080 $56,473 $248,390 
Special Mention5 334 279 77 5 194 65 959 
Substandard66 930 891 103 51 177 — 2,218 
Doubtful— — — — — — — — 
Total$20,628 $67,963 $46,704 $19,927 $20,356 $19,451 $56,538 $251,567 
Gross Charge Offs$74 $1,910 $2,218 $362 $263 $666 $261 $5,754 
Consolidated
Total$974,245 $2,264,733 $2,112,263 $804,167 $797,510 $2,015,489 $1,094,533 $10,062,940 
Gross Charge Offs$1,272 $2,027 $2,888 $3,413 $845 $13,409 $941 $24,795 
1 Represents gross charge-offs for the year ended December 31, 2023.
Troubled Borrower Modifications
The following table presents the amortized cost of troubled borrower modification (“TBM”) loans that were modified during the nine months ended September 30, 2024. There were five loans with an amortized cost of $0.9 million modified as a TBM during the nine months ended September 30, 2023.
September 30, 2024
(In thousands)
Rate Reduction or Rate Reduction with Term Extension
Term Extension and/or Payment Delay
Total1
% of Total Class of Loans
Construction and land development$— $86 $86 0.01 %
Commercial real estate - owner occupied514 2,685 3,199 0.19 
Commercial real estate - non-owner occupied3,142 177 3,319 0.09 %
Residential real estate— 126 126 0.01 %
Commercial and financial3,524 813 4,337 0.28 %
Consumer84 1,034 1,118 0.51 %
Totals$7,264 $4,921 $12,185 0.12 %
1At September 30, 2024, there were no unfunded lending related commitments associated with TBMs.
The following table presents the payment status of TBM loans that were modified in the twelve months prior to September 30, 2024.
September 30, 2024
(In thousands)CurrentAccruing
30-59 Days Past Due		Accruing
60-89 Days Past Due		Accruing
Greater
Than 90 Days		NonaccrualTotal
Construction and Land Development$— $— — $— $— $86 $86 
Commercial real estate - owner occupied95 — — — 3,199 3,293 
Commercial real estate - non-owner occupied— — — — 3,319 3,319 
Residential real estate123 — — — 96 219 
Commercial and financial3,162 — — — 1,321 4,483 
Consumer341 429 288 191 233 1,483 
Totals$3,721 $429 $288 $191 $8,254 $12,883 
TBM loans modified in the prior 12 months with a payment default during the nine months ending September 30, 2024 were immaterial.
v3.24.3
Allowance for Credit Losses
 9 Months Ended
Sep. 30, 2024
Receivables [Abstract]  
Allowance for Credit Losses Allowance for Credit Losses
Activity in the allowance for credit losses is summarized as follows:
Three Months Ended September 30, 2024
(In thousands)Beginning
Balance		Provision
for Credit
Losses		Charge-
Offs		RecoveriesEnding
Balance
Construction and land development$5,493 $1,562 $— $3 $7,058 
Commercial real estate - owner occupied11,582 338 (2)— 11,918 
Commercial real estate - non-owner occupied45,434 826 (602)18 45,676 
Residential real estate39,209 (159)(6)104 39,148 
Commercial and financial28,429 3,003 (6,180)726 25,978 
Consumer11,494 703 (1,794)288 10,691 
Totals$141,641 $6,273 $(8,584)$1,139 $140,469 
Three Months Ended September 30, 2023
(In thousands)Beginning
Balance		Provision
for Credit
Losses		Charge-
Offs		RecoveriesEnding
Balance
Construction and land development$6,960 $725 $— $— $7,685 
Commercial real estate - owner occupied6,418 (353)— — 6,065 
Commercial real estate - non-owner occupied54,103 (1,677)— 15 52,441 
Residential real estate36,710 2,009 (44)60 38,735 
Commercial and financial40,272 2,932 (11,814)135 31,525 
Consumer15,252 (942)(1,265)165 13,210 
Totals$159,715 $2,694 $(13,123)$375 $149,661 
Nine Months Ended September 30, 2024
(In thousands)Beginning
Balance		Provision
for Credit
Losses		Charge-
Offs		RecoveriesEnding
Balance
Construction and land development$8,637 $(1,593)$(1)$15 $7,058 
Commercial real estate - owner occupied5,529 6,688 (304)5 11,918 
Commercial real estate - non-owner occupied48,288 (2,049)(705)142 45,676 
Residential real estate39,016 (152)(128)412 39,148 
Commercial and financial34,343 6,208 (16,786)2,213 25,978 
Consumer13,118 3,457 (6,713)829 10,691 
Totals$148,931 $12,559 $(24,637)$3,616 $140,469 
Nine Months Ended September 30, 2023
(In thousands)Beginning BalanceAllowance on PCD Loans Acquired During the PeriodProvision for Credit LossesCharge- OffsRecoveriesEnding Balance
Construction and land development$6,464 $5 $1,208 $— $8 $7,685 
Commercial real estate - owner occupied6,051 139 (127)— 2 6,065 
Commercial real estate - non-owner occupied43,258 647 8,461 (109)184 52,441 
Residential real estate29,605 400 8,659 (312)383 38,735 
Commercial and financial15,648 17,527 11,548 (15,183)1,985 31,525 
Consumer12,869 161 3,779 (3,864)265 13,210 
Totals$113,895 $18,879 $33,528 $(19,468)$2,827 $149,661 

Management establishes the allowance using relevant available information from both internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Forecast data is sourced from Moody’s Analytics (“Moody’s”), a firm widely recognized for its research, analysis, and economic forecasts. The forecasts of future economic conditions are over the expected remaining life of the loan using economic forecasts that revert to long-term historical averages over time.
As of September 30, 2024 and December 31, 2023, the Company utilized a multiple scenario model comprised of a blend of Moody’s economic scenarios and considered the uncertainty associated with the assumptions in the scenarios, including continued actions taken by the Federal Reserve with regard to monetary policy and interest rates and the potential impact of those actions. Outcomes could differ from the scenarios utilized, and the Company incorporated qualitative considerations reflecting the risk of uncertain economic conditions, and for additional dimensions of risk that may not be captured in the quantitative model.
The following section discusses changes in the level of the allowance for credit losses for the three months ended September 30, 2024.
The allowance decreased $1.2 million, or 0.8%, during the third quarter of 2024 to $140.5 million, or 1.38% of loans held for investment as of September 30, 2024.
In the Construction and Land Development segment, the increase in allowance is due to continued uncertainty in connection with commercial real estate markets. In this segment, the primary source of repayment is typically from proceeds of the sale or permanent financing of the underlying property; therefore, industry and collateral type and estimated collateral values are among the relevant factors in assessing expected losses.
In the Commercial Real Estate - Owner-Occupied segment, the allowance increased nominally due to an increase in loan balances and continued uncertainty in connection with commercial real estate valuations broadly and uncertainty associated with the economy. Risk characteristics include, but are not limited to, collateral type, note structure and loan seasoning.
In the Commercial Real Estate - Non-Owner-Occupied segment, the allowance increased slightly driven by higher loan balances and was partially offset by the charge-off of one nonaccrual loan. Repayment is often dependent upon rental income from the successful operation of the underlying property or from the sale of the property. Loan performance may be adversely affected by general economic conditions or conditions specific to the real estate market, including property types. Collateral type, note structure, and loan seasoning are among the risk characteristics analyzed for this segment.
The Residential Real Estate segment includes first mortgages secured by residential property, and home equity lines of credit. Allowance levels were essentially flat from last quarter. Risk characteristics considered for this segment include, but are not limited to, borrower FICO score, lien position, loan to value ratios, and loan seasoning.
In the Commercial and Financial segment, borrowers are primarily small to medium sized professional firms and other businesses, and loans are generally supported by projected cash flows of the business, collateralized by business assets, and/or guaranteed by the business owners. The decrease in the allowance is primarily driven by the charge-off of one nonaccrual relationship that was previously individually reserved. Industry, collateral type, estimated collateral values, and loan seasoning are among the relevant factors in assessing expected losses.
Consumer loans include installment and revolving lines, loans for automobiles, boats, and other personal or family purposes. Risk characteristics considered for this segment include, but are not limited to, collateral type, loan to value ratios, loan seasoning and FICO score. The decrease in allowance for consumer loans was driven by lower loan balances and improved economic forecasts.
v3.24.3
Derivatives
 9 Months Ended
Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivatives Derivatives
Interest Rate Contracts
The Company offers interest rate swaps when requested by customers to allow them to hedge the risk of rising interest rates on their variable rate loans. Upon entering into these swaps, the Company enters into offsetting positions with counterparties in order to minimize the interest rate risk. These back-to-back swaps are freestanding financial derivatives with the fair values reported in Other Assets and Other Liabilities. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under the arrangements for financial statement presentation purposes. Gains and losses on these back-to-back swaps, which offset, are recorded through noninterest income.
Interest Rate Swaps Designated as Fair Value Hedges
The Company has entered into interest rate swap contracts to hedge the risk of changes in fair value of the AFS securities portfolio due to changes in the Secured Overnight Financing Rate (“SOFR”). The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in other comprehensive income. These derivative instruments are primarily for risk management purposes. For the three and nine months ended September 30, 2024, the Company recognized, through other comprehensive income, net losses of $2.8 million and $2.0 million, respectively, and reclassified net gains of $0.3 million in each period out of accumulated other comprehensive income into interest income. For each of the three and nine months ended September 30, 2023, the Company recognized nominal amounts through other comprehensive income, and reclassified $0.2 million and $0.5 million, respectively, out of accumulated other comprehensive income into interest income.
The Company has entered into interest rate swap contracts to hedge the risk of changes in the fair value of a pool of residential mortgages due to changes in SOFR. These fair value hedges utilize the portfolio layer method. The Company considers these derivatives to be highly effective at offsetting changes in interest rates and assesses the effectiveness on a quarterly basis. The effect of changes in interest rates on the fair value of these derivative contracts is recognized in interest income. These derivative instruments are primarily for risk management purposes. For the three and nine months ended September 30, 2024, the Company recognized gains through interest income of $0.9 million and $1.8 million, respectively.
(In thousands)Notional AmountFair ValueBalance Sheet Category
September 30, 2024
Interest rate contracts1
$817,762 $26,259 Other Assets and Other Liabilities
Securities fair value hedges400,000 692 Other Assets
Residential mortgage fair value hedges400,000 794 Other Liabilities
December 31, 2023
Interest rate contracts1
$605,735 $28,804 Other Assets and Other Liabilities
Securities fair value hedges400,000 2,677 Other Assets
Residential mortgage fair value hedges200,000 75 Other Liabilities
1Interest rate contracts include risk participation agreements with notional amounts of $18.4 million and $9.4 million at September 30, 2024, and December 31, 2023, respectively with nominal fair value in both periods.
The following table presents amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges.
Carrying amount of the hedged itemsCumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items
(In thousands)September 30, 2024December 31, 2023September 30, 2024December 31, 2023
Securities available-for-sale 1
$526,845 $584,108 $313 $2,643 
Loans, net 2
599,743 633,693 974 44 
1 At September 30, 2024, and December 31, 2023, the amortized cost basis and unallocated basis adjustments used in hedging relationships was $608.4 million and $680.6 million, respectively. Refer to “Note 3 - Securities” for a reconciliation of the amortized cost and fair value of AFS securities.
2 These amounts represent the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At September 30, 2024, the portfolio layer method was $400 million, of which $400 million was designated as hedged. At December 31, 2023, the portfolio layer method was $200 million, of which $200 million was designated as hedged.
v3.24.3
Securities Sold Under Agreements to Repurchase
 9 Months Ended
Sep. 30, 2024
Broker-Dealer [Abstract]  
Securities Sold Under Agreements to Repurchase Securities Sold Under Agreements to Repurchase
Securities sold under agreements to repurchase are accounted for as secured borrowings. For securities sold under agreements to repurchase, the Company is required to pledge collateral with value sufficient to fully collateralize borrowings. Company securities pledged were as follows by collateral type and maturity as of: 
(In thousands)September 30, 2024December 31, 2023
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
$ 253,244
$396,378 
v3.24.3
Regulatory Capital
 9 Months Ended
Sep. 30, 2024
Banking And Thrift Disclosure [Abstract]  
Regulatory Capital Regulatory Capital
The Company is well-capitalized and at September 30, 2024, the Company and the Company’s principal banking subsidiary, Seacoast Bank, exceeded the Common Equity Tier 1 “(CET1)” capital ratio regulatory threshold of 6.5% for well-capitalized institutions under the Basel III standardized transition approach, as well as risk-based and leverage ratio requirements for well-capitalized banks under the regulatory framework for prompt corrective action.
v3.24.3
Contingent Liabilities
 9 Months Ended
Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]  
Contingent Liabilities Contingent Liabilities
The Company and its subsidiaries, because of the nature of their business, are at all times subject to numerous legal actions, threatened or filed. Management presently believes that none of the legal proceedings to which it is a party are likely to have a materially adverse effect on the Company’s consolidated financial condition, operating results or cash flows.
v3.24.3
Fair Value
 9 Months Ended
Sep. 30, 2024
Fair Value Disclosures [Abstract]  
Fair Value Fair Value
Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2024 and December 31, 2023 included:
(In thousands)Fair Value
Measurements		Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)
At September 30, 2024    
Financial Assets
Debt securities available-for-sale1
$2,160,055 $197 $2,159,858 $— 
Derivative financial instruments2
26,951 — 26,951 — 
Loans held for sale2
11,039 — 11,039 — 
Loans3
3,974 — — 3,974 
Other real estate owned3
6,421 — — 6,421 
Equity securities4
13,918 13,918 — — 
Financial Liabilities
Derivative financial instruments2
$27,053 $— $27,053 $— 
At December 31, 2023
Financial Assets
Debt securities available-for-sale1
$1,836,020 $192 $1,835,828 $— 
Derivative financial instruments2
31,481 — 31,481 — 
Loans held for sale2
4,391 — 4,391 — 
Loans3
15,242 — — 15,242 
Other real estate owned3
7,560 — — 7,560 
Equity securities4
13,623 13,623 — — 
Financial Liabilities
Derivative financial instruments2
$28,879 $— $28,879 $— 
1See “Note 3 – Securities” for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data.
3Fair value is measured on a nonrecurring basis.
4Investment in shares of mutual funds that invest primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations.
Loans and other real estate owned: Fair values of collateral-dependent real estate loans and other real estate owned are based on recent real estate appraisals less estimated costs of sale. Evaluations may use either a single valuation approach or a combination of approaches, such as comparative sales, cost and/or income approach. Adjustments to comparable sales may be made by an appraiser to reflect local market conditions or other economic factors and may result in changes in the fair value of an asset over time but none were made by management. As such, the fair values of these loans and properties are considered Level 3 in the fair value hierarchy. Collateral-dependent loans measured at fair value totaled $6.1 million with a specific reserve of $2.1 million at September 30, 2024, compared to $17.8 million with a specific reserve of $2.6 million at December 31, 2023.
For recurring fair value measurements, transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Company’s monthly and/or quarterly valuation process. During the nine months ended September 30, 2024, there were no such transfers.
For additional information on the valuation techniques and significant inputs for Level 2 and Level 3 assets and liabilities that are measured at fair value on a recurring basis, see “Note 16 - Fair Value” of the Annual Report on Form 10-K for the year ended December 31, 2023.
The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2024 and December 31, 2023 is as follows:
(In thousands)Carrying AmountQuoted Prices in Active Markets for Identical Assets
(Level 1)		Significant Other Observable Inputs
(Level 2)		Significant Unobservable Inputs
(Level 3)
September 30, 2024    
Financial Assets  
Held-to-maturity debt securities1
$646,050 $— $538,485 $— 
Time deposits with other banks5,207 — 5,206 — 
Loans, net10,060,837 — — 9,933,594 
Financial Liabilities
Deposits12,243,585 — — 12,242,892 
FHLB borrowings245,000 — 240,697 — 
Long-term debt106,800 — 93,092 — 
December 31, 2023
Held-to-maturity debt securities1
$680,313 $— $558,359 $— 
Time deposits with other banks5,857 — 5,756 — 
Loans, net9,898,767 — — 9,805,693 
Financial Liabilities
Deposits11,776,935 — — 11,775,613 
FHLB borrowings50,000 — 49,745 — 
Long-term debt109,458 — 100,851 — 
1See “Note 3 – Securities” for further detail of recurring fair value basis of individual investment categories.
The short maturity of Seacoast’s assets and liabilities results in a significant number of financial instruments whose fair value equals or closely approximates carrying value. Such financial instruments are reported in the following balance sheet captions: cash and due from banks, interest bearing deposits with other banks, and securities sold under agreements to repurchase.
The following methods and assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate that value at September 30, 2024 and December 31, 2023:
Held-to-maturity debt securities: These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.
The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.
Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820.
Deposit liabilities: The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.
v3.24.3
Business Combinations
 9 Months Ended
Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]  
Business Combinations Business Combinations
Acquisition of Professional Holding Corp.
On January 31, 2023, the Company completed its acquisition of Professional Holding Corp. (“Professional”). Simultaneously, upon completion of the merger of Professional and the Company, Professional Bank was merged with and into Seacoast Bank. Prior to the acquisition, Professional Bank operated nine branches across South Florida. The transaction further expanded the Company’s presence in the tri-county South Florida market, which includes Miami-Dade, Broward, and Palm Beach counties, Florida’s largest metropolitan statistical area and the 8th largest in the nation. The Company acquired 100% of the outstanding common stock of Professional. Under the terms of the merger agreement, Professional shareholders received 0.8909 shares of Seacoast common stock for each share of Professional common stock held immediately prior to the merger, and Professional option holders received options to purchase Seacoast common stock, with the number of shares underlying each such option and the applicable exercise price adjusted using the same 0.8909 exchange ratio.
(In thousands, except per share data)January 31, 2023
Number of Professional common shares outstanding14,358 
Per share exchange ratio0.8909
Number of shares of SBCF common stock issued12,792 
Multiplied by common stock price per share at January 31, 2023$32.11 
Value of SBCF common stock issued$410,738 
Cash paid for fractional shares5 
Fair value of Professional options converted10,304 
Total purchase price$421,047 
The acquisition of Professional was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations. The Company recognized goodwill of $251.7 million for this acquisition that is nondeductible for tax purposes. Determining fair values of assets and liabilities, especially the loan portfolio, core deposit intangibles, and deferred taxes, is a complicated process involving significant judgment regarding methods and assumptions used to calculate estimated fair values.
As part of the acquisition of Professional, options to purchase shares of Seacoast common stock were granted to replace outstanding Professional options. These options were fully vested upon acquisition. The full value of the replacement options, $10.3 million, was associated with pre-combination service and was therefore included in the calculation of the total purchase consideration.
Initially MeasuredMeasurementAs Adjusted
(In thousands)January 31, 2023Period AdjustmentsJanuary 31, 2023
Assets:
Cash and cash equivalents$141,680 $— $141,680 
Investment securities167,059 — 167,059 
Loans1,991,713 (5,544)1,986,169 
Bank premises and equipment2,478 — 2,478 
Core deposit intangibles48,885 — 48,885 
Goodwill248,091 3,583 251,674 
BOLI55,071 — 55,071 
Other Assets74,232 2,561 76,793 
Total Assets$2,729,209 $600 $2,729,809 
Liabilities:
Deposits$2,119,341 $— $2,119,341 
Subordinated debt21,141 — 21,141 
Other Liabilities167,680 600 168,280 
Total Liabilities$2,308,162 $600 $2,308,762 
The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.
January 31, 2023
(In thousands)Book BalanceFair Value
Loans:
Construction and land development$156,048 $151,012 
Commercial real estate - owner occupied293,473 274,068 
Commercial real estate - non-owner occupied752,393 692,746 
Residential real estate509,305 483,611 
Commercial and financial392,396 350,628 
Consumer33,656 32,153 
PPP Loans1,951 1,951 
Total acquired loans$2,139,222 $1,986,169 
The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination:
(In thousands)January 31, 2023
Book balance of loans at acquisition$155,031 
Allowance for credit losses at acquisition(18,879)
Non-credit related discount(12,361)
Total PCD loans acquired$123,791 
The acquisition of Professional resulted in the addition of $45.5 million in allowance for credit losses, including the $18.9 million identified in the table above for PCD loans, and $26.6 million for non-PCD loans recorded through the provision for credit losses at the date of acquisition. Included within the $18.9 million initial PCD allowance is $5.5 million recorded as a measurement period adjustment during the three months ended September 30, 2023, reflecting information obtained by the Company relating to events or circumstances existing at the acquisition date.
The Company believes the deposits assumed in the acquisition have an intangible value. In determining the valuation amount, deposits were analyzed based on factors such as type of deposit, deposit retention, interest rates and age of deposit relationships. The core deposit intangible asset acquired from Professional is being amortized over eight years using an accelerated method of amortization.
Acquisition Costs
Acquisition costs were $33.2 million for the nine months ended September 30, 2023.
v3.24.3
Subsequent Event
 9 Months Ended
Sep. 30, 2024
Subsequent Events [Abstract]  
Subsequent Event Subsequent Event
In October 2024, the Company took advantage of favorable market conditions and repositioned a portion of its AFS securities portfolio. Securities with an average book yield of 2.8% were sold, resulting in a pre-tax loss of approximately $8.0 million impacting fourth quarter 2024 results. The proceeds of approximately $113.0 million were reinvested in agency mortgage-backed securities with an average book yield of 5.4%, for an estimated earnback of less than three years.
v3.24.3
Pay vs Performance Disclosure - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Pay vs Performance Disclosure        
Net Income $ 30,651 $ 31,414 $ 86,901 $ 74,490
v3.24.3
Insider Trading Arrangements
 3 Months Ended
Sep. 30, 2024
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.24.3
Basis of Presentation (Policies)
 9 Months Ended
Sep. 30, 2024
Accounting Policies [Abstract]  
Basis of Presentation
Basis of Presentation: The accompanying unaudited consolidated financial statements of Seacoast Banking Corporation of Florida and its subsidiaries (the “Company”) have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Certain prior period amounts have been reclassified to conform to the current period presentation.
Operating results for the three and nine months ended September 30, 2024, are not necessarily indicative of the results that may be expected for the year ending December 31, 2024, or any other period. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023.
Use of Estimates
Use of Estimates: The preparation of these consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well-controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues, and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include the determination of the allowance for credit losses, acquisition accounting and purchased loans, intangible assets and impairment testing, and other fair value measurements.
Issued Accounting Standards
Issued Accounting Standards
In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures.” ASU 2023-07 requires disclosure of significant segment expenses and other segment items on an interim and annual basis. The standard is effective for fiscal years beginning after December 15, 2023 and for interim periods beginning after December 15, 2024. The Company is evaluating the impact of the changes to its existing disclosures.
In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures.” ASU 2023-09 requires disclosure of specific categories in the income tax rate reconciliation and requires additional information for reconciling items that meet a quantitative threshold. The standard requires an annual disclosure of income taxes paid, net of refunds received, disaggregated by federal, state and foreign taxes and to disaggregate the information by jurisdiction based on a quantitative threshold. The standard is effective for fiscal years beginning after December 15, 2024 and early adoption is permitted. The Company does not expect the adoption of the standard to have a material impact on its disclosures.
In November 2024, the FASB issued ASU 2024-03, “Expense Disaggregation Disclosures.” ASU 2024-03 requires disclosure to disaggregate prescribed expenses within relevant income statement captions. The standard is effective for fiscal years beginning after December 15, 2026 and for interim periods after December 15, 2027. Early adoption is permitted. The Company is evaluating the impact of the changes to its existing disclosures.
Fair Value Measurement
Held-to-maturity debt securities: These debt securities are reported at fair value utilizing Level 2 inputs. The estimated fair value of a security is determined based on market quotations when available or, if not available, by using quoted market prices for similar securities, pricing models or discounted cash flow analyses, using observable market data where available.
The Company reviews the prices supplied by independent pricing services, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. From time to time, the Company will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from other brokers and third-party sources or derived using internal models.
Loans: Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type, such as commercial or mortgage. Each loan category is further segmented into fixed and adjustable-rate interest terms as well as performing and nonperforming categories. The fair value of loans is calculated by discounting scheduled cash flows through the estimated life including prepayment considerations, using estimated market discount rates that reflect the risks inherent in the loan. The fair value approach considers market-driven variables including credit related factors and reflects an “exit price” as defined in ASC Topic 820.
Deposit liabilities: The fair value of demand deposits, savings accounts and money market deposits is the amount payable at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for funding of similar remaining maturities.
v3.24.3
Earnings per Share (Tables)
 9 Months Ended
Sep. 30, 2024
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
Three Months Ended September 30,Nine Months Ended September 30,
(Dollars in thousands, except per share data)2024202320242023
Basic earnings per share  
Net income$30,651 $31,414 $86,901 $74,490 
Average common shares outstanding84,434 85,142 84,319 83,457 
Net income per share$0.36 $0.37 $1.03 $0.89 
Diluted earnings per share
Net income$30,651 $31,414 $86,901 $74,490 
Average common shares outstanding84,434 85,142 84,319 83,457 
Add: Dilutive effect of employee restricted stock and stock options635 524 596 536 
Average diluted shares outstanding85,069 85,666 84,915 83,993 
Net income per share$0.36 $0.37 $1.02 $0.89 
v3.24.3
Securities (Tables)
 9 Months Ended
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Summary of Amortized Cost and Fair Value of Securities Available for Sale
The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale (“AFS”) and held-to-maturity (“HTM”) at September 30, 2024 and December 31, 2023 are summarized as follows:
 September 30, 2024
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross Unrealized
Losses		Fair
Value
Available-for-Sale Debt Securities   
U.S. Treasury securities and obligations of U.S. government agencies$30,542 $375 $(335)$30,582 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities1,558,076 8,560 (158,627)1,408,009 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities299,975 3,860 (11,586)292,249 
Private mortgage-backed securities and collateralized mortgage obligations136,038 288 (7,028)129,298 
Collateralized loan obligations286,042 648 (158)286,532 
Obligations of state and political subdivisions7,137 9 (1,216)5,930 
Other debt securities7,389 66 — 7,455 
Totals$2,325,199 $13,806 $(178,950)$2,160,055 
Held-to-Maturity Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities$557,119 $— $(99,722)$457,397 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities88,931 — (7,843)81,088 
Totals$646,050 $— $(107,565)$538,485 
 December 31, 2023
(In thousands)Amortized
Cost		Gross Unrealized
Gains		Gross Unrealized
Losses		Fair
Value
Available-for-Sale Debt Securities    
U.S. Treasury securities and obligations of U.S. government agencies$37,718 $205 $(478)$37,445 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities1,152,753 780 (184,152)969,381 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities385,013 2,824 (19,565)368,272 
Private mortgage-backed securities and collateralized mortgage obligations135,878 36 (10,911)125,003 
Collateralized loan obligations300,855 11 (1,411)299,455 
Obligations of state and political subdivisions10,486 — (1,096)9,390 
Other debt securities26,599 576 (101)27,074 
Totals$2,049,302 $4,432 $(217,714)$1,836,020 
Held-to-Maturity Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities$590,676 $— $(111,746)$478,930 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities89,637 — (10,208)79,429 
Totals$680,313 $— $(121,954)$558,359 
Summary of Amortized Cost and Fair Value of Held-to-Maturity Securities
The amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale (“AFS”) and held-to-maturity (“HTM”) at September 30, 2024 and December 31, 2023 are summarized as follows:
 September 30, 2024
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross Unrealized
Losses		Fair
Value
Available-for-Sale Debt Securities   
U.S. Treasury securities and obligations of U.S. government agencies$30,542 $375 $(335)$30,582 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities1,558,076 8,560 (158,627)1,408,009 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities299,975 3,860 (11,586)292,249 
Private mortgage-backed securities and collateralized mortgage obligations136,038 288 (7,028)129,298 
Collateralized loan obligations286,042 648 (158)286,532 
Obligations of state and political subdivisions7,137 9 (1,216)5,930 
Other debt securities7,389 66 — 7,455 
Totals$2,325,199 $13,806 $(178,950)$2,160,055 
Held-to-Maturity Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities$557,119 $— $(99,722)$457,397 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities88,931 — (7,843)81,088 
Totals$646,050 $— $(107,565)$538,485 
 December 31, 2023
(In thousands)Amortized
Cost		Gross Unrealized
Gains		Gross Unrealized
Losses		Fair
Value
Available-for-Sale Debt Securities    
U.S. Treasury securities and obligations of U.S. government agencies$37,718 $205 $(478)$37,445 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities1,152,753 780 (184,152)969,381 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities385,013 2,824 (19,565)368,272 
Private mortgage-backed securities and collateralized mortgage obligations135,878 36 (10,911)125,003 
Collateralized loan obligations300,855 11 (1,411)299,455 
Obligations of state and political subdivisions10,486 — (1,096)9,390 
Other debt securities26,599 576 (101)27,074 
Totals$2,049,302 $4,432 $(217,714)$1,836,020 
Held-to-Maturity Debt Securities
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities$590,676 $— $(111,746)$478,930 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities89,637 — (10,208)79,429 
Totals$680,313 $— $(121,954)$558,359 
Summary of Investments Classified by Contractual Maturity
The amortized cost and fair value of securities HTM and AFS as of September 30, 2024, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because prepayments of the underlying collateral for these securities may occur, due to the right to call or repay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.
 Held-to-MaturityAvailable-for-Sale
(In thousands)Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
Due in less than one year$— $— $999 $999 
Due after one year through five years— — 6,163 6,187 
Due after five years through ten years— — 8,373 8,413 
Due after ten years— — 22,144 20,913 
 — — 37,679 36,512 
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities557,119 457,397 1,558,076 1,408,009 
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities88,931 81,088 299,975 292,249 
Private mortgage-backed securities and collateralized mortgage obligations— — 136,038 129,298 
Collateralized loan obligations— — 286,042 286,532 
Other debt securities— — 7,389 7,455 
Totals$646,050 $538,485 $2,325,199 $2,160,055 
Schedule of Debt Securities in Unrealized Loss Position The tables below indicate the fair value of AFS debt securities with unrealized losses for which no allowance for credit losses has been recorded.
 September 30, 2024
 Less Than 12 Months12 Months or Longer
Total1
(In thousands)Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses
U.S. Treasury securities and obligations of U.S. government agencies$372 $(1)$20,513 $(334)$20,885 $(335)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities103,020 (449)828,586 (158,178)931,606 (158,627)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities— — 198,386 (11,586)198,386 (11,586)
Private mortgage-backed securities and collateralized mortgage obligations— — 106,748 (7,028)106,748 (7,028)
Collateralized loan obligations53,893 (139)7,723 (19)61,616 (158)
Obligations of state and political subdivisions— — 5,588 (1,216)5,588 (1,216)
Totals$157,285 $(589)$1,167,544 $(178,361)$1,324,829 $(178,950)
1Comprised of 350 individual securities.
 December 31, 2023
 Less Than 12 Months12 Months or Longer
Total1
(In thousands)Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses
U.S. Treasury securities and obligations of U.S. government agencies$24,933 $(143)$3,594 $(335)$28,527 $(478)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities91,867 (9,320)826,324 (174,832)918,191 (184,152)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities24,251 (1,270)262,666 (18,295)286,917 (19,565)
Private mortgage-backed securities and collateralized mortgage obligations3,945 (69)119,475 (10,842)123,420 (10,911)
Collateralized loan obligations60,087 (223)232,545 (1,188)292,632 (1,411)
Obligations of state and political subdivisions326 (2)9,064 (1,094)9,390 (1,096)
Other debt securities10,579 (101)— — 10,579 (101)
Totals$215,988 $(11,128)$1,453,668 $(206,586)$1,669,656 $(217,714)
1Comprised of 504 individual securities.
v3.24.3
Loans (Tables)
 9 Months Ended
Sep. 30, 2024
Receivables [Abstract]  
Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans
The following tables present net loan balances by segment for portfolio loans, purchased credit deteriorated loans (“PCD”) and loans purchased which are not considered credit deteriorated (“Non-PCD”) as of:

 September 30, 2024
(In thousands)Portfolio LoansAcquired Non-PCD LoansPCD LoansTotal
Construction and land development$495,458 $99,756 $539 $595,753 
Commercial real estate - owner occupied1,150,809 493,986 32,019 1,676,814 
Commercial real estate - non-owner occupied2,228,137 1,214,092 130,847 3,573,076 
Residential real estate1,811,941 734,399 18,563 2,564,903 
Commercial and financial1,332,939 213,109 29,180 1,575,228 
Consumer158,902 60,293 312 219,507 
Totals$7,178,186 $2,815,635 $211,460 $10,205,281 
 December 31, 2023
(In thousands)Portfolio LoansAcquired Non-PCD LoansPCD LoansTotal
Construction and land development$519,426 $247,654 $542 $767,622 
Commercial real estate - owner occupied1,079,633 552,627 38,021 1,670,281 
Commercial real estate - non-owner occupied1,844,588 1,323,222 152,080 3,319,890 
Residential real estate1,714,748 710,129 20,815 2,445,692 
Commercial and financial1,237,090 318,683 52,115 1,607,888 
Consumer175,969 74,854 744 251,567 
Totals$6,571,454 $3,227,169 $264,317 $10,062,940 
Schedule of Past Due Financing Receivables
The following tables present the status of net loan balances as of September 30, 2024 and December 31, 2023.
 September 30, 2024
(In thousands)CurrentAccruing
30-59 Days
Past Due		Accruing
60-89 Days
Past Due		Accruing
Greater
Than
90 Days		NonaccrualTotal
Portfolio Loans      
Construction and land development$495,240 $— $— $— $218 $495,458 
Commercial real estate - owner occupied1,147,263 496 835 — 2,215 1,150,809 
Commercial real estate - non-owner occupied2,224,884 — — — 3,253 2,228,137 
Residential real estate1,789,154 11,571 2,175 — 9,041 1,811,941 
Commercial and financial1,317,596 2,844 175 148 12,176 1,332,939 
Consumer157,309 615 470 508 158,902 
Total Portfolio Loans$7,131,446 $15,526 $3,655 $148 $27,411 $7,178,186 
Acquired Non-PCD Loans
Construction and land development$97,011 $2,219 $— $— $526 $99,756 
Commercial real estate - owner occupied489,257 1,380 613 — 2,736 493,986 
Commercial real estate - non-owner occupied1,203,625 2,059 642 — 7,766 1,214,092 
Residential real estate713,224 9,684 269 646 10,576 734,399 
Commercial and financial208,981 395 749 35 2,949 213,109 
Consumer54,072 2,515 1,706 1,084 916 60,293 
 Total Acquired Non-PCD Loans$2,766,170 $18,252 $3,979 $1,765 $25,469 $2,815,635 
PCD Loans
Construction and land development$45 $400 $— $— $94 $539 
Commercial real estate - owner occupied27,304 — — — 4,715 32,019 
Commercial real estate - non-owner occupied107,265 2,554 — 3,341 17,687 130,847 
Residential real estate16,880 63 168 — 1,452 18,563 
Commercial and financial24,367 803 — 31 3,979 29,180 
Consumer253 9 — — 50 312 
Total PCD Loans$176,114 $3,829 $168 $3,372 $27,977 $211,460 
Total Loans$10,073,730 $37,607 $7,802 $5,285 $80,857 $10,205,281 
 
 December 31, 2023
(In thousands)CurrentAccruing
30-59 Days
Past Due		Accruing
60-89 Days
Past Due		Accruing
Greater
Than
90 Days		NonaccrualTotal
Portfolio Loans      
Construction and land development$519,383 $19 $— $— $24 $519,426 
Commercial real estate - owner occupied1,078,732 — — — 901 1,079,633 
Commercial real estate - non-owner occupied1,840,485 685 — — 3,418 1,844,588 
Residential real estate1,701,862 4,373 1,515 169 6,829 1,714,748 
Commercial and financial1,221,941 1,372 145 50 13,582 1,237,090 
Consumer174,798 763 290 — 118 175,969 
 Total Portfolio Loans$6,537,201 $7,212 $1,950 $219 $24,872 $6,571,454 
Acquired Non-PCD Loans
Construction and land development$245,674 $891 $289 $— $800 $247,654 
Commercial real estate - owner occupied545,374 1,691 133 — 5,429 552,627 
Commercial real estate - non-owner occupied1,310,100 11,577 — — 1,545 1,323,222 
Residential real estate704,417 2,586 888 153 2,085 710,129 
Commercial and financial315,229 50 36 35 3,333 318,683 
Consumer71,986 568 618 618 1,064 74,854 
 Total Acquired Non-PCD Loans$3,192,780 $17,363 $1,964 $806 $14,256 $3,227,169 
PCD Loans
Construction and land development$442 $100 $— $— $— $542 
Commercial real estate - owner occupied34,667 — — — 3,354 38,021 
Commercial real estate - non-owner occupied148,308 — — — 3,772 152,080 
Residential real estate18,923 497 169 154 1,072 20,815 
Commercial and financial34,337 — — — 17,778 52,115 
Consumer651 85 8 — — 744 
 Total PCD Loans$237,328 $682 $177 $154 $25,976 $264,317 
Total Loans$9,967,309 $25,257 $4,091 $1,179 $65,104 $10,062,940 
Schedule of Nonaccrual Loans by Loan Category
The following tables present net balances of loans on nonaccrual status and the related allowance for credit losses, if any, as of:
September 30, 2024
(In thousands)Nonaccrual Loans With No Related AllowanceNonaccrual Loans With an AllowanceTotal Nonaccrual LoansAllowance for Credit Losses
Construction and land development$94 $744 $838 $177 
Commercial real estate - owner occupied2,664 7,002 9,666 1,188 
Commercial real estate - non-owner occupied25,452 3,254 28,706 1,715 
Residential real estate6,379 14,690 21,069 562 
Commercial and financial3,571 15,533 19,104 6,676 
Consumer— 1,474 1,474 221 
Totals $38,160 $42,697 $80,857 $10,539 
December 31, 2023
(In thousands)Nonaccrual Loans With No Related AllowanceNonaccrual Loans With an AllowanceTotal Nonaccrual LoansAllowance for Credit Losses
Construction and land development$— $824 $824 $— 
Commercial real estate - owner occupied4,859 4,825 9,684 41 
Commercial real estate - non-owner occupied3,938 4,797 8,735 230 
Residential real estate1,792 8,194 9,986 58 
Commercial and financial4,868 29,825 34,693 2,319 
Consumer— 1,182 1,182 257 
Totals$15,457 $49,647 $65,104 $2,905 
Schedule of Risk Categories of Loans by Class of Loans
The following tables present the risk rating of loans and year-to-date1 gross charge offs by year of origination as of:
September 30, 2024
(In thousands)20242023202220212020PriorRevolvingTotal
Construction and Land Development
Risk Ratings:
Pass$65,374 $130,253 $191,784 $40,202 $9,268 $41,567 $116,021 $594,469 
Special Mention— — — — — 46 — 46 
Substandard— — 188 95 — 955 — 1,238 
Doubtful— — — — — — — — 
Total$65,374 $130,253 $191,972 $40,297 $9,268 $42,568 $116,021 $595,753 
Gross Charge Offs$— $— $— $— $— $1 $— $1 
Commercial real estate - owner occupied
Risk Ratings:
Pass$137,538 $142,285 $268,777 $267,741 $160,404 $644,931 $18,034 $1,639,710 
Special Mention— — 1,640 700 2,006 6,778 351 11,475 
Substandard— 1,068 2,446 1,218 5,916 14,981 — 25,629 
Doubtful— — — — — — — — 
Total$137,538 $143,353 $272,863 $269,659 $168,326 $666,690 $18,385 $1,676,814 
Gross Charge Offs$— $— $179 $— $— $125 $— $304 
Commercial real estate - non-owner occupied
Risk Ratings:
Pass$335,560 $237,198 $863,032 $655,870 $252,978 $1,069,483 $23,468 $3,437,589 
Special Mention29 — 20,248 6,323 16,765 33,324 — 76,689 
Substandard— — 10,522 9,685 11,312 25,337 — 56,856 
Doubtful— — — — — 1,942 — 1,942 
Total$335,589 $237,198 $893,802 $671,878 $281,055 $1,130,086 $23,468 $3,573,076 
Gross Charge Offs$— $— $— $— $89 $616 $— $705 
Residential real estate
Risk Ratings:
Pass$100,622 $174,995 $500,327 $640,263 $156,208 $454,794 $506,576 $2,533,785 
Special Mention176 581 — — 23 436 6,669 7,885 
Substandard— 850 4,972 353 115 7,063 9,880 23,233 
Doubtful— — — — — — — — 
Total$100,798 $176,426 $505,299 $640,616 $156,346 $462,293 $523,125 $2,564,903 
Gross Charge Offs$— $— $— $— $40 $62 $26 $128 
Commercial and financial
Risk Ratings:
Pass$237,737 $212,954 $282,492 $248,791 $93,641 $117,672 $329,015 $1,522,302 
Special Mention— 759 2,211 3,023 557 2,154 866 9,570 
Substandard— — 9,272 11,279 6,187 10,830 5,788 43,356 
Doubtful— — — — — — — — 
Total$237,737 $213,713 $293,975 $263,093 $100,385 $130,656 $335,669 $1,575,228 
Gross Charge Offs$— $— $2,747 $10,723 $— $2,621 $695 $16,786 
Consumer
Risk Ratings:
Pass$12,300 $15,159 $39,439 $30,070 $15,109 $37,971 $63,234 $213,282 
Special Mention52 29 1,067 402 18 312 157 2,037 
Substandard81 63 2,382 1,131 116 340 75 4,188 
Doubtful— — — — — — — — 
Total$12,433 $15,251 $42,888 $31,603 $15,243 $38,623 $63,466 $219,507 
Gross Charge Offs$484 $394 $2,257 $3,132 $187 $100 $159 $6,713 
Consolidated
Total$889,469 $916,194 $2,200,799 $1,917,146 $730,623 $2,470,916 $1,080,134 $10,205,281 
Gross Charge Offs$484 $394 $5,183 $13,855 $316 $3,525 $880 $24,637 
1 Represents gross charge-offs for the nine months ended September 30, 2024.
December 31, 2023
(In thousands)20232022202120202019PriorRevolvingTotal
Construction and Land Development
Risk Ratings:
Pass$80,750 $295,043 $107,158 $20,199 $21,942 $28,902 $210,716 $764,710 
Special Mention— 1,407 — — — 393 289 2,089 
Substandard— — — — — 499 324 823 
Doubtful— — — — — — — — 
Total$80,750 $296,450 $107,158 $20,199 $21,942 $29,794 $211,329 $767,622 
Gross Charge Offs$— $— $— $— $— $— $— $— 
Commercial real estate - owner occupied
Risk Ratings:
Pass$145,642 $272,384 $281,870 $165,475 $171,897 $551,177 $36,952 $1,625,397 
Special Mention— 159 1,335 — 524 9,122 1 11,141 
Substandard— 6,024 1,057 6,991 7,116 12,491 64 33,743 
Doubtful— — — — — — — — 
Total$145,642 $278,567 $284,262 $172,466 $179,537 $572,790 $37,017 $1,670,281 
Gross Charge Offs$— $— $— $— $— $— $— $— 
Commercial real estate - non-owner occupied
Risk Ratings:
Pass$234,226 $784,525 $657,499 $288,747 $397,031 $841,062 $25,954 $3,229,044 
Special Mention— 29,381 2,092 2,964 — 12,120 — 46,557 
Substandard— 685 8,723 9,398 10,427 14,806 250 44,289 
Doubtful— — — — — — — — 
Total$234,226 $814,591 $668,314 $301,109 $407,458 $867,988 $26,204 $3,319,890 
Gross Charge Offs$— $— $11 $— $— $— $109 $120 
Residential real estate
Risk Ratings:
Pass$177,000 $450,366 $649,086 $160,889 $95,288 $413,719 $479,047 $2,425,395 
Special Mention208 — — — 58 482 4,004 4,752 
Substandard95 — 919 123 314 8,960 5,134 15,545 
Doubtful— — — — — — — — 
Total$177,303 $450,366 $650,005 $161,012 $95,660 $423,161 $488,185 $2,445,692 
Gross Charge Offs$— $— $— $44 $— $159 $153 $356 
Commercial and financial
Risk Ratings:
Pass$315,560 $336,071 $333,113 $127,069 $66,165 $89,002 $269,108 $1,536,088 
Special Mention136 2,167 1,064 1,005 503 1,103 2,191 8,169 
Substandard— 18,558 21,643 1,380 5,889 11,842 3,961 63,273 
Doubtful— — — — — 358 — 358 
Total$315,696 $356,796 $355,820 $129,454 $72,557 $102,305 $275,260 $1,607,888 
Gross Charge Offs$1,198 $117 $659 $3,007 $582 $12,584 $418 $18,565 
Consumer
Risk Ratings:
Pass$20,557 $66,699 $45,534 $19,747 $20,300 $19,080 $56,473 $248,390 
Special Mention5 334 279 77 5 194 65 959 
Substandard66 930 891 103 51 177 — 2,218 
Doubtful— — — — — — — — 
Total$20,628 $67,963 $46,704 $19,927 $20,356 $19,451 $56,538 $251,567 
Gross Charge Offs$74 $1,910 $2,218 $362 $263 $666 $261 $5,754 
Consolidated
Total$974,245 $2,264,733 $2,112,263 $804,167 $797,510 $2,015,489 $1,094,533 $10,062,940 
Gross Charge Offs$1,272 $2,027 $2,888 $3,413 $845 $13,409 $941 $24,795 
1 Represents gross charge-offs for the year ended December 31, 2023.
Schedule of Troubled Borrower Modifications
The following table presents the amortized cost of troubled borrower modification (“TBM”) loans that were modified during the nine months ended September 30, 2024. There were five loans with an amortized cost of $0.9 million modified as a TBM during the nine months ended September 30, 2023.
September 30, 2024
(In thousands)
Rate Reduction or Rate Reduction with Term Extension
Term Extension and/or Payment Delay
Total1
% of Total Class of Loans
Construction and land development$— $86 $86 0.01 %
Commercial real estate - owner occupied514 2,685 3,199 0.19 
Commercial real estate - non-owner occupied3,142 177 3,319 0.09 %
Residential real estate— 126 126 0.01 %
Commercial and financial3,524 813 4,337 0.28 %
Consumer84 1,034 1,118 0.51 %
Totals$7,264 $4,921 $12,185 0.12 %
1At September 30, 2024, there were no unfunded lending related commitments associated with TBMs.
The following table presents the payment status of TBM loans that were modified in the twelve months prior to September 30, 2024.
September 30, 2024
(In thousands)CurrentAccruing
30-59 Days Past Due		Accruing
60-89 Days Past Due		Accruing
Greater
Than 90 Days		NonaccrualTotal
Construction and Land Development$— $— — $— $— $86 $86 
Commercial real estate - owner occupied95 — — — 3,199 3,293 
Commercial real estate - non-owner occupied— — — — 3,319 3,319 
Residential real estate123 — — — 96 219 
Commercial and financial3,162 — — — 1,321 4,483 
Consumer341 429 288 191 233 1,483 
Totals$3,721 $429 $288 $191 $8,254 $12,883 
v3.24.3
Allowance for Credit Losses (Tables)
 9 Months Ended
Sep. 30, 2024
Receivables [Abstract]  
Schedule of Allowance for Credit Losses
Activity in the allowance for credit losses is summarized as follows:
Three Months Ended September 30, 2024
(In thousands)Beginning
Balance		Provision
for Credit
Losses		Charge-
Offs		RecoveriesEnding
Balance
Construction and land development$5,493 $1,562 $— $3 $7,058 
Commercial real estate - owner occupied11,582 338 (2)— 11,918 
Commercial real estate - non-owner occupied45,434 826 (602)18 45,676 
Residential real estate39,209 (159)(6)104 39,148 
Commercial and financial28,429 3,003 (6,180)726 25,978 
Consumer11,494 703 (1,794)288 10,691 
Totals$141,641 $6,273 $(8,584)$1,139 $140,469 
Three Months Ended September 30, 2023
(In thousands)Beginning
Balance		Provision
for Credit
Losses		Charge-
Offs		RecoveriesEnding
Balance
Construction and land development$6,960 $725 $— $— $7,685 
Commercial real estate - owner occupied6,418 (353)— — 6,065 
Commercial real estate - non-owner occupied54,103 (1,677)— 15 52,441 
Residential real estate36,710 2,009 (44)60 38,735 
Commercial and financial40,272 2,932 (11,814)135 31,525 
Consumer15,252 (942)(1,265)165 13,210 
Totals$159,715 $2,694 $(13,123)$375 $149,661 
Nine Months Ended September 30, 2024
(In thousands)Beginning
Balance		Provision
for Credit
Losses		Charge-
Offs		RecoveriesEnding
Balance
Construction and land development$8,637 $(1,593)$(1)$15 $7,058 
Commercial real estate - owner occupied5,529 6,688 (304)5 11,918 
Commercial real estate - non-owner occupied48,288 (2,049)(705)142 45,676 
Residential real estate39,016 (152)(128)412 39,148 
Commercial and financial34,343 6,208 (16,786)2,213 25,978 
Consumer13,118 3,457 (6,713)829 10,691 
Totals$148,931 $12,559 $(24,637)$3,616 $140,469 
Nine Months Ended September 30, 2023
(In thousands)Beginning BalanceAllowance on PCD Loans Acquired During the PeriodProvision for Credit LossesCharge- OffsRecoveriesEnding Balance
Construction and land development$6,464 $5 $1,208 $— $8 $7,685 
Commercial real estate - owner occupied6,051 139 (127)— 2 6,065 
Commercial real estate - non-owner occupied43,258 647 8,461 (109)184 52,441 
Residential real estate29,605 400 8,659 (312)383 38,735 
Commercial and financial15,648 17,527 11,548 (15,183)1,985 31,525 
Consumer12,869 161 3,779 (3,864)265 13,210 
Totals$113,895 $18,879 $33,528 $(19,468)$2,827 $149,661 
v3.24.3
Derivatives (Tables)
 9 Months Ended
Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Instruments
(In thousands)Notional AmountFair ValueBalance Sheet Category
September 30, 2024
Interest rate contracts1
$817,762 $26,259 Other Assets and Other Liabilities
Securities fair value hedges400,000 692 Other Assets
Residential mortgage fair value hedges400,000 794 Other Liabilities
December 31, 2023
Interest rate contracts1
$605,735 $28,804 Other Assets and Other Liabilities
Securities fair value hedges400,000 2,677 Other Assets
Residential mortgage fair value hedges200,000 75 Other Liabilities
1Interest rate contracts include risk participation agreements with notional amounts of $18.4 million and $9.4 million at September 30, 2024, and December 31, 2023, respectively with nominal fair value in both periods.
The following table presents amounts recorded on the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges.
Carrying amount of the hedged itemsCumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items
(In thousands)September 30, 2024December 31, 2023September 30, 2024December 31, 2023
Securities available-for-sale 1
$526,845 $584,108 $313 $2,643 
Loans, net 2
599,743 633,693 974 44 
1 At September 30, 2024, and December 31, 2023, the amortized cost basis and unallocated basis adjustments used in hedging relationships was $608.4 million and $680.6 million, respectively. Refer to “Note 3 - Securities” for a reconciliation of the amortized cost and fair value of AFS securities.
2 These amounts represent the amortized cost basis of closed portfolios used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolios anticipated to be outstanding for the designated hedge period. At September 30, 2024, the portfolio layer method was $400 million, of which $400 million was designated as hedged. At December 31, 2023, the portfolio layer method was $200 million, of which $200 million was designated as hedged.
v3.24.3
Securities Sold Under Agreements to Repurchase (Tables)
 9 Months Ended
Sep. 30, 2024
Broker-Dealer [Abstract]  
Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged Company securities pledged were as follows by collateral type and maturity as of: 
(In thousands)September 30, 2024December 31, 2023
Fair value of pledged securities - overnight and continuous:
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
$ 253,244
$396,378 
v3.24.3
Fair Value (Tables)
 9 Months Ended
Sep. 30, 2024
Fair Value Disclosures [Abstract]  
Schedule of Fair Value of Assets Measured on Recurring and Nonrecurring Basis
Under ASC Topic 820, fair value measurements for items measured at fair value on a recurring and nonrecurring basis at September 30, 2024 and December 31, 2023 included:
(In thousands)Fair Value
Measurements		Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)
At September 30, 2024    
Financial Assets
Debt securities available-for-sale1
$2,160,055 $197 $2,159,858 $— 
Derivative financial instruments2
26,951 — 26,951 — 
Loans held for sale2
11,039 — 11,039 — 
Loans3
3,974 — — 3,974 
Other real estate owned3
6,421 — — 6,421 
Equity securities4
13,918 13,918 — — 
Financial Liabilities
Derivative financial instruments2
$27,053 $— $27,053 $— 
At December 31, 2023
Financial Assets
Debt securities available-for-sale1
$1,836,020 $192 $1,835,828 $— 
Derivative financial instruments2
31,481 — 31,481 — 
Loans held for sale2
4,391 — 4,391 — 
Loans3
15,242 — — 15,242 
Other real estate owned3
7,560 — — 7,560 
Equity securities4
13,623 13,623 — — 
Financial Liabilities
Derivative financial instruments2
$28,879 $— $28,879 $— 
1See “Note 3 – Securities” for further detail of fair value of individual investment categories.
2Recurring fair value basis determined using observable market data.
3Fair value is measured on a nonrecurring basis.
4Investment in shares of mutual funds that invest primarily in CRA-qualified debt securities, reported at fair value in Other Assets. Recurring fair value basis is determined using market quotations.
Schedule of Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis
The carrying amount and fair value of the Company’s other financial instruments that were not disclosed previously in the balance sheet and for which carrying amount is not fair value as of September 30, 2024 and December 31, 2023 is as follows:
(In thousands)Carrying AmountQuoted Prices in Active Markets for Identical Assets
(Level 1)		Significant Other Observable Inputs
(Level 2)		Significant Unobservable Inputs
(Level 3)
September 30, 2024    
Financial Assets  
Held-to-maturity debt securities1
$646,050 $— $538,485 $— 
Time deposits with other banks5,207 — 5,206 — 
Loans, net10,060,837 — — 9,933,594 
Financial Liabilities
Deposits12,243,585 — — 12,242,892 
FHLB borrowings245,000 — 240,697 — 
Long-term debt106,800 — 93,092 — 
December 31, 2023
Held-to-maturity debt securities1
$680,313 $— $558,359 $— 
Time deposits with other banks5,857 — 5,756 — 
Loans, net9,898,767 — — 9,805,693 
Financial Liabilities
Deposits11,776,935 — — 11,775,613 
FHLB borrowings50,000 — 49,745 — 
Long-term debt109,458 — 100,851 — 
1See “Note 3 – Securities” for further detail of recurring fair value basis of individual investment categories.
v3.24.3
Business Combinations (Tables)
 9 Months Ended
Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]  
Schedule of Purchase Price Calculation
(In thousands, except per share data)January 31, 2023
Number of Professional common shares outstanding14,358 
Per share exchange ratio0.8909
Number of shares of SBCF common stock issued12,792 
Multiplied by common stock price per share at January 31, 2023$32.11 
Value of SBCF common stock issued$410,738 
Cash paid for fractional shares5 
Fair value of Professional options converted10,304 
Total purchase price$421,047 
Schedule of Business Acquisitions
Initially MeasuredMeasurementAs Adjusted
(In thousands)January 31, 2023Period AdjustmentsJanuary 31, 2023
Assets:
Cash and cash equivalents$141,680 $— $141,680 
Investment securities167,059 — 167,059 
Loans1,991,713 (5,544)1,986,169 
Bank premises and equipment2,478 — 2,478 
Core deposit intangibles48,885 — 48,885 
Goodwill248,091 3,583 251,674 
BOLI55,071 — 55,071 
Other Assets74,232 2,561 76,793 
Total Assets$2,729,209 $600 $2,729,809 
Liabilities:
Deposits$2,119,341 $— $2,119,341 
Subordinated debt21,141 — 21,141 
Other Liabilities167,680 600 168,280 
Total Liabilities$2,308,162 $600 $2,308,762 
Schedule of Fair Value of Acquired Loans, Unpaid Principal Balance, Purchase Price and Allowance for Credit Losses
The table below presents information with respect to the fair value and unpaid principal balance of acquired loans at the acquisition date.
January 31, 2023
(In thousands)Book BalanceFair Value
Loans:
Construction and land development$156,048 $151,012 
Commercial real estate - owner occupied293,473 274,068 
Commercial real estate - non-owner occupied752,393 692,746 
Residential real estate509,305 483,611 
Commercial and financial392,396 350,628 
Consumer33,656 32,153 
PPP Loans1,951 1,951 
Total acquired loans$2,139,222 $1,986,169 
Schedule Purchase Credit Deteriorated Loans Acquired
The table below presents the carrying amount of loans for which, at the date of acquisition, there was evidence of more than insignificant deterioration of credit quality since origination:
(In thousands)January 31, 2023
Book balance of loans at acquisition$155,031 
Allowance for credit losses at acquisition(18,879)
Non-credit related discount(12,361)
Total PCD loans acquired$123,791 
v3.24.3
Earnings per Share - Narrative (Details) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Earnings Per Share [Abstract]        
Antidilutive securities excluded from diluted earnings per share calculation (in shares) 327,006 368,968 328,045 368,968
v3.24.3
Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Basic earnings per share        
Net income $ 30,651 $ 31,414 $ 86,901 $ 74,490
Average common shares outstanding (in shares) 84,434 85,142 84,319 83,457
Net income per share (in dollars per share) $ 0.36 $ 0.37 $ 1.03 $ 0.89
Diluted earnings per share        
Average common shares outstanding (in shares) 84,434 85,142 84,319 83,457
Add: Dilutive effect of employee restricted stock and stock options (in shares) 635 524 596 536
Average diluted shares outstanding (in shares) 85,069 85,666 84,915 83,993
Net income per share (in dollars per share) $ 0.36 $ 0.37 $ 1.02 $ 0.89
v3.24.3
Securities - Amortized Cost and Fair Value of Securities Available for Sale and Held for Investment (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total $ 2,325,199 $ 2,049,302
Available for sale, gross unrealized gains 13,806 4,432
Available for sale, gross unrealized losses (178,950) (217,714)
Available for sale, fair value 2,160,055 1,836,020
Held-to-Maturity Debt Securities    
Held to maturity, amortized cost, total 646,050 680,313
Held to maturity, gross unrealized gains 0 0
Held to maturity, gross unrealized losses (107,565) (121,954)
Held to maturity, fair value 538,485 558,359
U.S. Treasury securities and obligations of U.S. government agencies    
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total 30,542 37,718
Available for sale, gross unrealized gains 375 205
Available for sale, gross unrealized losses (335) (478)
Available for sale, fair value 30,582 37,445
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities    
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total 1,558,076 1,152,753
Available for sale, gross unrealized gains 8,560 780
Available for sale, gross unrealized losses (158,627) (184,152)
Available for sale, fair value 1,408,009 969,381
Held-to-Maturity Debt Securities    
Held to maturity, amortized cost, total 557,119 590,676
Held to maturity, gross unrealized gains 0 0
Held to maturity, gross unrealized losses (99,722) (111,746)
Held to maturity, fair value 457,397 478,930
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities    
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total 299,975 385,013
Available for sale, gross unrealized gains 3,860 2,824
Available for sale, gross unrealized losses (11,586) (19,565)
Available for sale, fair value 292,249 368,272
Held-to-Maturity Debt Securities    
Held to maturity, amortized cost, total 88,931 89,637
Held to maturity, gross unrealized gains 0 0
Held to maturity, gross unrealized losses (7,843) (10,208)
Held to maturity, fair value 81,088 79,429
Private mortgage-backed securities and collateralized mortgage obligations    
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total 136,038 135,878
Available for sale, gross unrealized gains 288 36
Available for sale, gross unrealized losses (7,028) (10,911)
Available for sale, fair value 129,298 125,003
Collateralized loan obligations    
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total 286,042 300,855
Available for sale, gross unrealized gains 648 11
Available for sale, gross unrealized losses (158) (1,411)
Available for sale, fair value 286,532 299,455
Obligations of state and political subdivisions    
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total 7,137 10,486
Available for sale, gross unrealized gains 9 0
Available for sale, gross unrealized losses (1,216) (1,096)
Available for sale, fair value 5,930 9,390
Other debt securities    
Available-for-Sale Debt Securities    
Available for sale, amortized cost, total 7,389 26,599
Available for sale, gross unrealized gains 66 576
Available for sale, gross unrealized losses 0 (101)
Available for sale, fair value $ 7,455 $ 27,074
v3.24.3
Securities - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]          
Proceeds from sale of available-for-sale debt securities, including legacy securities $ 17,600,000 $ 0 $ 104,400,000    
Gross losses from sale of securities 300,000   4,000,000.0    
Securities gains (losses), net 187,000 (387,000) 372,000 $ (456,000)  
Unrealized losses on mortgage backed securities of government sponsored entities 178,950,000   178,950,000   $ 217,714,000
Fair value of securities in unrealized loss position 1,324,829,000   1,324,829,000   1,669,656,000
Held-to-maturity securities, allowance for credit loss 0   0    
Federal Home Loan Bank and Federal Reserve stock recorded in other assets 77,200,000   77,200,000   67,700,000
Accrued interest receivable on AFS debt securities 8,400,000   8,400,000   7,900,000
Accrued interest receivable on HTM debt securities $ 1,100,000   $ 1,100,000   $ 1,100,000
Common stock, shares outstanding (in shares) 85,441,001   85,441,001   84,861,498
Proceeds from sale of Visa Class B shares     $ 4,104,000 0  
Visa | Common Class B          
Debt Securities, Available-for-sale [Line Items]          
Common stock, shares outstanding (in shares)         11,330
Proceeds from sale of Visa Class B shares     4,100,000    
Asset Pledged as Collateral          
Debt Securities, Available-for-sale [Line Items]          
Fair value of debt securities pledged as collateral $ 1,500,000,000   1,500,000,000    
Professional Holding Corp.          
Debt Securities, Available-for-sale [Line Items]          
Proceeds from sale of available-for-sale debt securities, including legacy securities       22,100,000  
Other debt securities          
Debt Securities, Available-for-sale [Line Items]          
Proceeds from sale of available-for-sale debt securities, including legacy securities       8,400,000  
Gross losses from sale of securities       19,000  
Gross gains from sale of securities       24,000  
Unrealized losses on mortgage backed securities of government sponsored entities         $ 101,000
Fair value of securities in unrealized loss position         10,579,000
CRA - Qualified Mutual Fund          
Debt Securities, Available-for-sale [Line Items]          
Securities gains (losses), net 500,000 $ (400,000) 300,000 $ (500,000)  
Investment in mutual fund carried at fair value 13,900,000   13,900,000   13,600,000
U.S. Treasury securities and obligations of U.S. government agencies          
Debt Securities, Available-for-sale [Line Items]          
Unrealized losses on mortgage backed securities of government sponsored entities 335,000   335,000   478,000
Fair value of securities in unrealized loss position 20,885,000   20,885,000   28,527,000
Allowance for credit losses on AFS debt securities 0   0    
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities          
Debt Securities, Available-for-sale [Line Items]          
Unrealized losses on mortgage backed securities of government sponsored entities 170,200,000   170,200,000    
Fair value of securities in unrealized loss position 1,100,000,000   1,100,000,000    
Allowance for credit losses on AFS debt securities 0   0    
Private mortgage-backed securities and collateralized mortgage obligations          
Debt Securities, Available-for-sale [Line Items]          
Unrealized losses on mortgage backed securities of government sponsored entities 7,028,000   7,028,000   10,911,000
Fair value of securities in unrealized loss position 106,748,000   106,748,000   123,420,000
Allowance for credit losses on AFS debt securities $ 0   $ 0    
Average credit support percentage 22.00%   22.00%    
Collateralized loan obligations          
Debt Securities, Available-for-sale [Line Items]          
Unrealized losses on mortgage backed securities of government sponsored entities $ 158,000   $ 158,000   1,411,000
Fair value of securities in unrealized loss position 61,616,000   61,616,000   292,632,000
Allowance for credit losses on AFS debt securities $ 0   $ 0    
Collateralized loan obligations | Standard & Poor's, AAA Rating          
Debt Securities, Available-for-sale [Line Items]          
Number of positions held, percentage of total 38.00%   38.00%    
Collateralized loan obligations | Standard & Poor's, AA Rating          
Debt Securities, Available-for-sale [Line Items]          
Number of positions held, percentage of total 30.00%   30.00%    
Obligations of state and political subdivisions          
Debt Securities, Available-for-sale [Line Items]          
Unrealized losses on mortgage backed securities of government sponsored entities $ 1,216,000   $ 1,216,000   1,096,000
Fair value of securities in unrealized loss position 5,588,000   5,588,000   $ 9,390,000
Allowance for credit losses on AFS debt securities $ 0   $ 0    
v3.24.3
Securities - Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Amortized Cost    
Due in less than one year $ 0  
Due after one year through five years 0  
Due after five years through ten years 0  
Due after ten years 0  
Held to maturity loans with maturity date, amortized cost, total 0  
Held to maturity, amortized cost, total 646,050 $ 680,313
Fair Value    
Due in less than one year 0  
Due after one year through five years 0  
Due after five years through ten years 0  
Due after ten years 0  
Held to maturity loans with maturity date, fair value, total 0  
Held to maturity, fair value, total 538,485 558,359
Amortized Cost    
Due in less than one year 999  
Due after one year through five years 6,163  
Due after five years through ten years 8,373  
Due after ten years 22,144  
Available for sale loans with maturity date, amortized cost, total 37,679  
Available for sale, amortized cost, total 2,325,199 2,049,302
Fair Value    
Due in less than one year 999  
Due after one year through five years 6,187  
Due after five years through ten years 8,413  
Due after ten years 20,913  
Available for sale loans with maturity date, fair value, total 36,512  
Available for sale, fair value, total 2,160,055 1,836,020
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities    
Amortized Cost    
Loans without single maturity date 557,119  
Held to maturity, amortized cost, total 557,119 590,676
Fair Value    
Loans without single maturity date 457,397  
Held to maturity, fair value, total 457,397 478,930
Amortized Cost    
Loans without single maturity date 1,558,076  
Available for sale, amortized cost, total 1,558,076 1,152,753
Fair Value    
Loans without single maturity date 1,408,009  
Available for sale, fair value, total 1,408,009 969,381
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities    
Amortized Cost    
Loans without single maturity date 88,931  
Held to maturity, amortized cost, total 88,931 89,637
Fair Value    
Loans without single maturity date 81,088  
Held to maturity, fair value, total 81,088 79,429
Amortized Cost    
Loans without single maturity date 299,975  
Available for sale, amortized cost, total 299,975 385,013
Fair Value    
Loans without single maturity date 292,249  
Available for sale, fair value, total 292,249 368,272
Private mortgage-backed securities and collateralized mortgage obligations    
Amortized Cost    
Loans without single maturity date 0  
Fair Value    
Loans without single maturity date 0  
Amortized Cost    
Loans without single maturity date 136,038  
Available for sale, amortized cost, total 136,038 135,878
Fair Value    
Loans without single maturity date 129,298  
Available for sale, fair value, total 129,298 125,003
Collateralized loan obligations    
Amortized Cost    
Loans without single maturity date 0  
Fair Value    
Loans without single maturity date 0  
Amortized Cost    
Loans without single maturity date 286,042  
Available for sale, amortized cost, total 286,042 300,855
Fair Value    
Loans without single maturity date 286,532  
Available for sale, fair value, total 286,532 299,455
Other debt securities    
Amortized Cost    
Loans without single maturity date 0  
Fair Value    
Loans without single maturity date 0  
Amortized Cost    
Loans without single maturity date 7,389  
Available for sale, amortized cost, total 7,389 26,599
Fair Value    
Loans without single maturity date 7,455  
Available for sale, fair value, total $ 7,455 $ 27,074
v3.24.3
Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details)
$ in Thousands
Sep. 30, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
security
Fair Value    
Less Than 12 Months $ 157,285 $ 215,988
12 Months or Longer 1,167,544 1,453,668
Total 1,324,829 1,669,656
Unrealized Losses    
Less Than 12 Months (589) (11,128)
12 Months or Longer (178,361) (206,586)
Total $ (178,950) $ (217,714)
Number of individual securities | security 350 504
U.S. Treasury securities and obligations of U.S. government agencies    
Fair Value    
Less Than 12 Months $ 372 $ 24,933
12 Months or Longer 20,513 3,594
Total 20,885 28,527
Unrealized Losses    
Less Than 12 Months (1) (143)
12 Months or Longer (334) (335)
Total (335) (478)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities    
Fair Value    
Less Than 12 Months 103,020 91,867
12 Months or Longer 828,586 826,324
Total 931,606 918,191
Unrealized Losses    
Less Than 12 Months (449) (9,320)
12 Months or Longer (158,178) (174,832)
Total (158,627) (184,152)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities    
Fair Value    
Less Than 12 Months 0 24,251
12 Months or Longer 198,386 262,666
Total 198,386 286,917
Unrealized Losses    
Less Than 12 Months 0 (1,270)
12 Months or Longer (11,586) (18,295)
Total (11,586) (19,565)
Private mortgage-backed securities and collateralized mortgage obligations    
Fair Value    
Less Than 12 Months 0 3,945
12 Months or Longer 106,748 119,475
Total 106,748 123,420
Unrealized Losses    
Less Than 12 Months 0 (69)
12 Months or Longer (7,028) (10,842)
Total (7,028) (10,911)
Collateralized loan obligations    
Fair Value    
Less Than 12 Months 53,893 60,087
12 Months or Longer 7,723 232,545
Total 61,616 292,632
Unrealized Losses    
Less Than 12 Months (139) (223)
12 Months or Longer (19) (1,188)
Total (158) (1,411)
Obligations of state and political subdivisions    
Fair Value    
Less Than 12 Months 0 326
12 Months or Longer 5,588 9,064
Total 5,588 9,390
Unrealized Losses    
Less Than 12 Months 0 (2)
12 Months or Longer (1,216) (1,094)
Total $ (1,216) (1,096)
Other debt securities    
Fair Value    
Less Than 12 Months   10,579
12 Months or Longer   0
Total   10,579
Unrealized Losses    
Less Than 12 Months   (101)
12 Months or Longer   0
Total   $ (101)
v3.24.3
Loans - Schedule of Portfolio Loans, Purchased Credit Impaired Loans and Purchased Unimpaired Loans (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans $ 10,205,281 $ 10,062,940
Construction and land development    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 595,753 767,622
Commercial real estate - owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 1,676,814 1,670,281
Commercial real estate - non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 3,573,076 3,319,890
Residential real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 2,564,903 2,445,692
Commercial and financial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 1,575,228 1,607,888
Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 219,507 251,567
Acquired Non-PCD Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 2,815,635 3,227,169
Acquired Non-PCD Loans | Construction and land development    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 99,756 247,654
Acquired Non-PCD Loans | Commercial real estate - owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 493,986 552,627
Acquired Non-PCD Loans | Commercial real estate - non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 1,214,092 1,323,222
Acquired Non-PCD Loans | Residential real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 734,399 710,129
Acquired Non-PCD Loans | Commercial and financial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 213,109 318,683
Acquired Non-PCD Loans | Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 60,293 74,854
PCD Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 211,460 264,317
PCD Loans | Construction and land development    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 539 542
PCD Loans | Commercial real estate - owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 32,019 38,021
PCD Loans | Commercial real estate - non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 130,847 152,080
PCD Loans | Residential real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 18,563 20,815
PCD Loans | Commercial and financial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 29,180 52,115
PCD Loans | Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 312 744
Portfolio Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 7,178,186 6,571,454
Portfolio Loans | Construction and land development    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 495,458 519,426
Portfolio Loans | Commercial real estate - owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 1,150,809 1,079,633
Portfolio Loans | Commercial real estate - non-owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 2,228,137 1,844,588
Portfolio Loans | Residential real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 1,811,941 1,714,748
Portfolio Loans | Commercial and financial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans 1,332,939 1,237,090
Portfolio Loans | Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans $ 158,902 $ 175,969
v3.24.3
Loans - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]          
Net deferred costs $ 44.9   $ 44.9   $ 43.1
Loans sold     9.1    
Gain on sale of loans     0.9    
Accrued interest receivable 38.8   38.8   39.4
Interest income on nonaccrual loans $ 0.2 $ 0.4 1.1 $ 0.8  
Loans          
Financing Receivable, Troubled Debt Restructuring [Line Items]          
Remaining fair value adjustment for loans acquired     $ 141.8   $ 174.0
Percentage of fair value adjustment for loans acquired 4.50%   4.50%   4.80%
v3.24.3
Loans - Past Due Financing Receivables (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Financing Receivable, Past Due [Line Items]    
Loans $ 10,205,281 $ 10,062,940
Nonaccrual 80,857 65,104
Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 2,815,635 3,227,169
Nonaccrual 25,469 14,256
PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 211,460 264,317
Nonaccrual 27,977 25,976
Current    
Financing Receivable, Past Due [Line Items]    
Loans 10,073,730 9,967,309
Current | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 2,766,170 3,192,780
Current | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 176,114 237,328
Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 37,607 25,257
Accruing 30-59 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 18,252 17,363
Accruing 30-59 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 3,829 682
Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 7,802 4,091
Accruing 60-89 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 3,979 1,964
Accruing 60-89 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 168 177
Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans 5,285 1,179
Accruing Greater Than 90 Days | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 1,765 806
Accruing Greater Than 90 Days | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 3,372 154
Construction and land development    
Financing Receivable, Past Due [Line Items]    
Loans 595,753 767,622
Nonaccrual 838 824
Construction and land development | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 99,756 247,654
Nonaccrual 526 800
Construction and land development | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 539 542
Nonaccrual 94 0
Construction and land development | Current | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 97,011 245,674
Construction and land development | Current | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 45 442
Construction and land development | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 2,219 891
Construction and land development | Accruing 30-59 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 400 100
Construction and land development | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 289
Construction and land development | Accruing 60-89 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Construction and land development | Accruing Greater Than 90 Days | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Construction and land development | Accruing Greater Than 90 Days | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial real estate - owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans 1,676,814 1,670,281
Nonaccrual 9,666 9,684
Commercial real estate - owner occupied | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 493,986 552,627
Nonaccrual 2,736 5,429
Commercial real estate - owner occupied | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 32,019 38,021
Nonaccrual 4,715 3,354
Commercial real estate - owner occupied | Current | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 489,257 545,374
Commercial real estate - owner occupied | Current | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 27,304 34,667
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 1,380 1,691
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 613 133
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial real estate - owner occupied | Accruing Greater Than 90 Days | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial real estate - non-owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans 3,573,076 3,319,890
Nonaccrual 28,706 8,735
Commercial real estate - non-owner occupied | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 1,214,092 1,323,222
Nonaccrual 7,766 1,545
Commercial real estate - non-owner occupied | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 130,847 152,080
Nonaccrual 17,687 3,772
Commercial real estate - non-owner occupied | Current | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 1,203,625 1,310,100
Commercial real estate - non-owner occupied | Current | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 107,265 148,308
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 2,059 11,577
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 2,554 0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 642 0
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 3,341 0
Residential real estate    
Financing Receivable, Past Due [Line Items]    
Loans 2,564,903 2,445,692
Nonaccrual 21,069 9,986
Residential real estate | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 734,399 710,129
Nonaccrual 10,576 2,085
Residential real estate | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 18,563 20,815
Nonaccrual 1,452 1,072
Residential real estate | Current | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 713,224 704,417
Residential real estate | Current | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 16,880 18,923
Residential real estate | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 9,684 2,586
Residential real estate | Accruing 30-59 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 63 497
Residential real estate | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 269 888
Residential real estate | Accruing 60-89 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 168 169
Residential real estate | Accruing Greater Than 90 Days | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 646 153
Residential real estate | Accruing Greater Than 90 Days | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 154
Commercial and financial    
Financing Receivable, Past Due [Line Items]    
Loans 1,575,228 1,607,888
Nonaccrual 19,104 34,693
Commercial and financial | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 213,109 318,683
Nonaccrual 2,949 3,333
Commercial and financial | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 29,180 52,115
Nonaccrual 3,979 17,778
Commercial and financial | Current | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 208,981 315,229
Commercial and financial | Current | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 24,367 34,337
Commercial and financial | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 395 50
Commercial and financial | Accruing 30-59 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 803 0
Commercial and financial | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 749 36
Commercial and financial | Accruing 60-89 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Commercial and financial | Accruing Greater Than 90 Days | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 35 35
Commercial and financial | Accruing Greater Than 90 Days | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 31 0
Consumer    
Financing Receivable, Past Due [Line Items]    
Loans 219,507 251,567
Nonaccrual 1,474 1,182
Consumer | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 60,293 74,854
Nonaccrual 916 1,064
Consumer | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 312 744
Nonaccrual 50 0
Consumer | Current | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 54,072 71,986
Consumer | Current | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 253 651
Consumer | Accruing 30-59 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 2,515 568
Consumer | Accruing 30-59 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 9 85
Consumer | Accruing 60-89 Days Past Due | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 1,706 618
Consumer | Accruing 60-89 Days Past Due | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 8
Consumer | Accruing Greater Than 90 Days | Acquired Non-PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 1,084 618
Consumer | Accruing Greater Than 90 Days | PCD Loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Portfolio Loans    
Financing Receivable, Past Due [Line Items]    
Loans 7,178,186 6,571,454
Nonaccrual 27,411 24,872
Portfolio Loans | Current    
Financing Receivable, Past Due [Line Items]    
Loans 7,131,446 6,537,201
Portfolio Loans | Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 15,526 7,212
Portfolio Loans | Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 3,655 1,950
Portfolio Loans | Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans 148 219
Portfolio Loans | Construction and land development    
Financing Receivable, Past Due [Line Items]    
Loans 495,458 519,426
Nonaccrual 218 24
Portfolio Loans | Construction and land development | Current    
Financing Receivable, Past Due [Line Items]    
Loans 495,240 519,383
Portfolio Loans | Construction and land development | Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 0 19
Portfolio Loans | Construction and land development | Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Portfolio Loans | Construction and land development | Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Portfolio Loans | Commercial real estate - owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans 1,150,809 1,079,633
Nonaccrual 2,215 901
Portfolio Loans | Commercial real estate - owner occupied | Current    
Financing Receivable, Past Due [Line Items]    
Loans 1,147,263 1,078,732
Portfolio Loans | Commercial real estate - owner occupied | Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 496 0
Portfolio Loans | Commercial real estate - owner occupied | Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 835 0
Portfolio Loans | Commercial real estate - owner occupied | Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Portfolio Loans | Commercial real estate - non-owner occupied    
Financing Receivable, Past Due [Line Items]    
Loans 2,228,137 1,844,588
Nonaccrual 3,253 3,418
Portfolio Loans | Commercial real estate - non-owner occupied | Current    
Financing Receivable, Past Due [Line Items]    
Loans 2,224,884 1,840,485
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 0 685
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Portfolio Loans | Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Portfolio Loans | Residential real estate    
Financing Receivable, Past Due [Line Items]    
Loans 1,811,941 1,714,748
Nonaccrual 9,041 6,829
Portfolio Loans | Residential real estate | Current    
Financing Receivable, Past Due [Line Items]    
Loans 1,789,154 1,701,862
Portfolio Loans | Residential real estate | Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 11,571 4,373
Portfolio Loans | Residential real estate | Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 2,175 1,515
Portfolio Loans | Residential real estate | Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans 0 169
Portfolio Loans | Commercial and financial    
Financing Receivable, Past Due [Line Items]    
Loans 1,332,939 1,237,090
Nonaccrual 12,176 13,582
Portfolio Loans | Commercial and financial | Current    
Financing Receivable, Past Due [Line Items]    
Loans 1,317,596 1,221,941
Portfolio Loans | Commercial and financial | Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 2,844 1,372
Portfolio Loans | Commercial and financial | Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 175 145
Portfolio Loans | Commercial and financial | Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans 148 50
Portfolio Loans | Consumer    
Financing Receivable, Past Due [Line Items]    
Loans 158,902 175,969
Nonaccrual 508 118
Portfolio Loans | Consumer | Current    
Financing Receivable, Past Due [Line Items]    
Loans 157,309 174,798
Portfolio Loans | Consumer | Accruing 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 615 763
Portfolio Loans | Consumer | Accruing 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 470 290
Portfolio Loans | Consumer | Accruing Greater Than 90 Days    
Financing Receivable, Past Due [Line Items]    
Loans $ 0
v3.24.3
Loans - Schedule of Nonaccrual Loans by Loan Category (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]    
Nonaccrual Loans With No Related Allowance $ 38,160 $ 15,457
Nonaccrual Loans With an Allowance 42,697 49,647
Total Nonaccrual Loans 80,857 65,104
Allowance for Credit Losses 10,539 2,905
Construction and land development    
Financing Receivable, Nonaccrual [Line Items]    
Nonaccrual Loans With No Related Allowance 94 0
Nonaccrual Loans With an Allowance 744 824
Total Nonaccrual Loans 838 824
Allowance for Credit Losses 177 0
Commercial real estate - owner occupied    
Financing Receivable, Nonaccrual [Line Items]    
Nonaccrual Loans With No Related Allowance 2,664 4,859
Nonaccrual Loans With an Allowance 7,002 4,825
Total Nonaccrual Loans 9,666 9,684
Allowance for Credit Losses 1,188 41
Commercial real estate - non-owner occupied    
Financing Receivable, Nonaccrual [Line Items]    
Nonaccrual Loans With No Related Allowance 25,452 3,938
Nonaccrual Loans With an Allowance 3,254 4,797
Total Nonaccrual Loans 28,706 8,735
Allowance for Credit Losses 1,715 230
Residential real estate    
Financing Receivable, Nonaccrual [Line Items]    
Nonaccrual Loans With No Related Allowance 6,379 1,792
Nonaccrual Loans With an Allowance 14,690 8,194
Total Nonaccrual Loans 21,069 9,986
Allowance for Credit Losses 562 58
Commercial and financial    
Financing Receivable, Nonaccrual [Line Items]    
Nonaccrual Loans With No Related Allowance 3,571 4,868
Nonaccrual Loans With an Allowance 15,533 29,825
Total Nonaccrual Loans 19,104 34,693
Allowance for Credit Losses 6,676 2,319
Consumer    
Financing Receivable, Nonaccrual [Line Items]    
Nonaccrual Loans With No Related Allowance 0 0
Nonaccrual Loans With an Allowance 1,474 1,182
Total Nonaccrual Loans 1,474 1,182
Allowance for Credit Losses $ 221 $ 257
v3.24.3
Loans - Risk Categories of Loans by Class of Loans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year $ 889,469   $ 889,469   $ 974,245
One year prior to current fiscal year 916,194   916,194   2,264,733
Two years prior to current fiscal year 2,200,799   2,200,799   2,112,263
Three years prior to current fiscal year 1,917,146   1,917,146   804,167
Four years prior to current fiscal year 730,623   730,623   797,510
Prior 2,470,916   2,470,916   2,015,489
Revolving 1,080,134   1,080,134   1,094,533
Total 10,205,281   10,205,281   10,062,940
Current fiscal year, Charge Offs     484   1,272
One year prior to current fiscal year, Charge Offs     394   2,027
Two years prior to current fiscal year, Charge Offs     5,183   2,888
Three years prior to current fiscal year, Charge Offs     13,855   3,413
Four years prior to current fiscal year, Charge Offs     316   845
Prior, Charge Offs     3,525   13,409
Revolving, Charge Offs     880   941
Total, Charge Offs 8,584 $ 13,123 24,637 $ 19,468 24,795
Construction and land development          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 65,374   65,374   80,750
One year prior to current fiscal year 130,253   130,253   296,450
Two years prior to current fiscal year 191,972   191,972   107,158
Three years prior to current fiscal year 40,297   40,297   20,199
Four years prior to current fiscal year 9,268   9,268   21,942
Prior 42,568   42,568   29,794
Revolving 116,021   116,021   211,329
Total 595,753   595,753   767,622
Current fiscal year, Charge Offs     0   0
One year prior to current fiscal year, Charge Offs     0   0
Two years prior to current fiscal year, Charge Offs     0   0
Three years prior to current fiscal year, Charge Offs     0   0
Four years prior to current fiscal year, Charge Offs     0   0
Prior, Charge Offs     1   0
Revolving, Charge Offs     0   0
Total, Charge Offs 0 0 1 0 0
Construction and land development | Pass          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 65,374   65,374   80,750
One year prior to current fiscal year 130,253   130,253   295,043
Two years prior to current fiscal year 191,784   191,784   107,158
Three years prior to current fiscal year 40,202   40,202   20,199
Four years prior to current fiscal year 9,268   9,268   21,942
Prior 41,567   41,567   28,902
Revolving 116,021   116,021   210,716
Total 594,469   594,469   764,710
Construction and land development | Special Mention          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   1,407
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 0   0   0
Prior 46   46   393
Revolving 0   0   289
Total 46   46   2,089
Construction and land development | Substandard          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   0
Two years prior to current fiscal year 188   188   0
Three years prior to current fiscal year 95   95   0
Four years prior to current fiscal year 0   0   0
Prior 955   955   499
Revolving 0   0   324
Total 1,238   1,238   823
Construction and land development | Doubtful          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   0
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Commercial real estate - owner occupied          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 137,538   137,538   145,642
One year prior to current fiscal year 143,353   143,353   278,567
Two years prior to current fiscal year 272,863   272,863   284,262
Three years prior to current fiscal year 269,659   269,659   172,466
Four years prior to current fiscal year 168,326   168,326   179,537
Prior 666,690   666,690   572,790
Revolving 18,385   18,385   37,017
Total 1,676,814   1,676,814   1,670,281
Current fiscal year, Charge Offs     0   0
One year prior to current fiscal year, Charge Offs     0   0
Two years prior to current fiscal year, Charge Offs     179   0
Three years prior to current fiscal year, Charge Offs     0   0
Four years prior to current fiscal year, Charge Offs     0   0
Prior, Charge Offs     125   0
Revolving, Charge Offs     0   0
Total, Charge Offs 2 0 304 0 0
Commercial real estate - owner occupied | Pass          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 137,538   137,538   145,642
One year prior to current fiscal year 142,285   142,285   272,384
Two years prior to current fiscal year 268,777   268,777   281,870
Three years prior to current fiscal year 267,741   267,741   165,475
Four years prior to current fiscal year 160,404   160,404   171,897
Prior 644,931   644,931   551,177
Revolving 18,034   18,034   36,952
Total 1,639,710   1,639,710   1,625,397
Commercial real estate - owner occupied | Special Mention          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   159
Two years prior to current fiscal year 1,640   1,640   1,335
Three years prior to current fiscal year 700   700   0
Four years prior to current fiscal year 2,006   2,006   524
Prior 6,778   6,778   9,122
Revolving 351   351   1
Total 11,475   11,475   11,141
Commercial real estate - owner occupied | Substandard          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 1,068   1,068   6,024
Two years prior to current fiscal year 2,446   2,446   1,057
Three years prior to current fiscal year 1,218   1,218   6,991
Four years prior to current fiscal year 5,916   5,916   7,116
Prior 14,981   14,981   12,491
Revolving 0   0   64
Total 25,629   25,629   33,743
Commercial real estate - owner occupied | Doubtful          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   0
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Commercial real estate - non-owner occupied          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 335,589   335,589   234,226
One year prior to current fiscal year 237,198   237,198   814,591
Two years prior to current fiscal year 893,802   893,802   668,314
Three years prior to current fiscal year 671,878   671,878   301,109
Four years prior to current fiscal year 281,055   281,055   407,458
Prior 1,130,086   1,130,086   867,988
Revolving 23,468   23,468   26,204
Total 3,573,076   3,573,076   3,319,890
Current fiscal year, Charge Offs     0   0
One year prior to current fiscal year, Charge Offs     0   0
Two years prior to current fiscal year, Charge Offs     0   11
Three years prior to current fiscal year, Charge Offs     0   0
Four years prior to current fiscal year, Charge Offs     89   0
Prior, Charge Offs     616   0
Revolving, Charge Offs     0   109
Total, Charge Offs 602 0 705 109 120
Commercial real estate - non-owner occupied | Pass          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 335,560   335,560   234,226
One year prior to current fiscal year 237,198   237,198   784,525
Two years prior to current fiscal year 863,032   863,032   657,499
Three years prior to current fiscal year 655,870   655,870   288,747
Four years prior to current fiscal year 252,978   252,978   397,031
Prior 1,069,483   1,069,483   841,062
Revolving 23,468   23,468   25,954
Total 3,437,589   3,437,589   3,229,044
Commercial real estate - non-owner occupied | Special Mention          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 29   29   0
One year prior to current fiscal year 0   0   29,381
Two years prior to current fiscal year 20,248   20,248   2,092
Three years prior to current fiscal year 6,323   6,323   2,964
Four years prior to current fiscal year 16,765   16,765   0
Prior 33,324   33,324   12,120
Revolving 0   0   0
Total 76,689   76,689   46,557
Commercial real estate - non-owner occupied | Substandard          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   685
Two years prior to current fiscal year 10,522   10,522   8,723
Three years prior to current fiscal year 9,685   9,685   9,398
Four years prior to current fiscal year 11,312   11,312   10,427
Prior 25,337   25,337   14,806
Revolving 0   0   250
Total 56,856   56,856   44,289
Commercial real estate - non-owner occupied | Doubtful          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   0
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 0   0   0
Prior 1,942   1,942   0
Revolving 0   0   0
Total 1,942   1,942   0
Residential real estate          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 100,798   100,798   177,303
One year prior to current fiscal year 176,426   176,426   450,366
Two years prior to current fiscal year 505,299   505,299   650,005
Three years prior to current fiscal year 640,616   640,616   161,012
Four years prior to current fiscal year 156,346   156,346   95,660
Prior 462,293   462,293   423,161
Revolving 523,125   523,125   488,185
Total 2,564,903   2,564,903   2,445,692
Current fiscal year, Charge Offs     0   0
One year prior to current fiscal year, Charge Offs     0   0
Two years prior to current fiscal year, Charge Offs     0   0
Three years prior to current fiscal year, Charge Offs     0   44
Four years prior to current fiscal year, Charge Offs     40   0
Prior, Charge Offs     62   159
Revolving, Charge Offs     26   153
Total, Charge Offs 6 44 128 312 356
Residential real estate | Pass          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 100,622   100,622   177,000
One year prior to current fiscal year 174,995   174,995   450,366
Two years prior to current fiscal year 500,327   500,327   649,086
Three years prior to current fiscal year 640,263   640,263   160,889
Four years prior to current fiscal year 156,208   156,208   95,288
Prior 454,794   454,794   413,719
Revolving 506,576   506,576   479,047
Total 2,533,785   2,533,785   2,425,395
Residential real estate | Special Mention          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 176   176   208
One year prior to current fiscal year 581   581   0
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 23   23   58
Prior 436   436   482
Revolving 6,669   6,669   4,004
Total 7,885   7,885   4,752
Residential real estate | Substandard          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   95
One year prior to current fiscal year 850   850   0
Two years prior to current fiscal year 4,972   4,972   919
Three years prior to current fiscal year 353   353   123
Four years prior to current fiscal year 115   115   314
Prior 7,063   7,063   8,960
Revolving 9,880   9,880   5,134
Total 23,233   23,233   15,545
Residential real estate | Doubtful          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   0
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total 0   0   0
Commercial and financial          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 237,737   237,737   315,696
One year prior to current fiscal year 213,713   213,713   356,796
Two years prior to current fiscal year 293,975   293,975   355,820
Three years prior to current fiscal year 263,093   263,093   129,454
Four years prior to current fiscal year 100,385   100,385   72,557
Prior 130,656   130,656   102,305
Revolving 335,669   335,669   275,260
Total 1,575,228   1,575,228   1,607,888
Current fiscal year, Charge Offs     0   1,198
One year prior to current fiscal year, Charge Offs     0   117
Two years prior to current fiscal year, Charge Offs     2,747   659
Three years prior to current fiscal year, Charge Offs     10,723   3,007
Four years prior to current fiscal year, Charge Offs     0   582
Prior, Charge Offs     2,621   12,584
Revolving, Charge Offs     695   418
Total, Charge Offs 6,180 11,814 16,786 15,183 18,565
Commercial and financial | Pass          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 237,737   237,737   315,560
One year prior to current fiscal year 212,954   212,954   336,071
Two years prior to current fiscal year 282,492   282,492   333,113
Three years prior to current fiscal year 248,791   248,791   127,069
Four years prior to current fiscal year 93,641   93,641   66,165
Prior 117,672   117,672   89,002
Revolving 329,015   329,015   269,108
Total 1,522,302   1,522,302   1,536,088
Commercial and financial | Special Mention          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   136
One year prior to current fiscal year 759   759   2,167
Two years prior to current fiscal year 2,211   2,211   1,064
Three years prior to current fiscal year 3,023   3,023   1,005
Four years prior to current fiscal year 557   557   503
Prior 2,154   2,154   1,103
Revolving 866   866   2,191
Total 9,570   9,570   8,169
Commercial and financial | Substandard          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   18,558
Two years prior to current fiscal year 9,272   9,272   21,643
Three years prior to current fiscal year 11,279   11,279   1,380
Four years prior to current fiscal year 6,187   6,187   5,889
Prior 10,830   10,830   11,842
Revolving 5,788   5,788   3,961
Total 43,356   43,356   63,273
Commercial and financial | Doubtful          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   0
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 0   0   0
Prior 0   0   358
Revolving 0   0   0
Total 0   0   358
Consumer          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 12,433   12,433   20,628
One year prior to current fiscal year 15,251   15,251   67,963
Two years prior to current fiscal year 42,888   42,888   46,704
Three years prior to current fiscal year 31,603   31,603   19,927
Four years prior to current fiscal year 15,243   15,243   20,356
Prior 38,623   38,623   19,451
Revolving 63,466   63,466   56,538
Total 219,507   219,507   251,567
Current fiscal year, Charge Offs     484   74
One year prior to current fiscal year, Charge Offs     394   1,910
Two years prior to current fiscal year, Charge Offs     2,257   2,218
Three years prior to current fiscal year, Charge Offs     3,132   362
Four years prior to current fiscal year, Charge Offs     187   263
Prior, Charge Offs     100   666
Revolving, Charge Offs     159   261
Total, Charge Offs 1,794 $ 1,265 6,713 $ 3,864 5,754
Consumer | Pass          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 12,300   12,300   20,557
One year prior to current fiscal year 15,159   15,159   66,699
Two years prior to current fiscal year 39,439   39,439   45,534
Three years prior to current fiscal year 30,070   30,070   19,747
Four years prior to current fiscal year 15,109   15,109   20,300
Prior 37,971   37,971   19,080
Revolving 63,234   63,234   56,473
Total 213,282   213,282   248,390
Consumer | Special Mention          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 52   52   5
One year prior to current fiscal year 29   29   334
Two years prior to current fiscal year 1,067   1,067   279
Three years prior to current fiscal year 402   402   77
Four years prior to current fiscal year 18   18   5
Prior 312   312   194
Revolving 157   157   65
Total 2,037   2,037   959
Consumer | Substandard          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 81   81   66
One year prior to current fiscal year 63   63   930
Two years prior to current fiscal year 2,382   2,382   891
Three years prior to current fiscal year 1,131   1,131   103
Four years prior to current fiscal year 116   116   51
Prior 340   340   177
Revolving 75   75   0
Total 4,188   4,188   2,218
Consumer | Doubtful          
Financing Receivable, Credit Quality Indicator [Line Items]          
Current fiscal year 0   0   0
One year prior to current fiscal year 0   0   0
Two years prior to current fiscal year 0   0   0
Three years prior to current fiscal year 0   0   0
Four years prior to current fiscal year 0   0   0
Prior 0   0   0
Revolving 0   0   0
Total $ 0   $ 0   $ 0
v3.24.3
Loans - Troubled Borrower Modifications (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 12,185 $ 900
% of Total Class of Loans 0.12%  
Nonaccrual loans modified $ 8,254  
Loans modified 12,883  
Current    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 3,721  
Accruing 30-59 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 429  
Accruing 60-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 288  
Accruing Greater Than 90 Days    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 191  
Rate Reduction or Rate Reduction with Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 7,264  
Term Extension and/or Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 4,921  
Construction and land development    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 86  
% of Total Class of Loans 0.01%  
Nonaccrual loans modified $ 86  
Loans modified 86  
Construction and land development | Current    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Construction and land development | Accruing 30-59 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Construction and land development | Accruing 60-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Construction and land development | Accruing Greater Than 90 Days    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Construction and land development | Rate Reduction or Rate Reduction with Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 0  
Construction and land development | Term Extension and/or Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 86  
Commercial real estate - owner occupied    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 3,199  
% of Total Class of Loans 0.19%  
Nonaccrual loans modified $ 3,199  
Loans modified 3,293  
Commercial real estate - owner occupied | Current    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 95  
Commercial real estate - owner occupied | Accruing 30-59 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate - owner occupied | Accruing 60-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate - owner occupied | Accruing Greater Than 90 Days    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate - owner occupied | Rate Reduction or Rate Reduction with Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 514  
Commercial real estate - owner occupied | Term Extension and/or Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 2,685  
Commercial real estate - non-owner occupied    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 3,319  
% of Total Class of Loans 0.09%  
Nonaccrual loans modified $ 3,319  
Loans modified 3,319  
Commercial real estate - non-owner occupied | Current    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate - non-owner occupied | Accruing 30-59 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate - non-owner occupied | Accruing 60-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate - non-owner occupied | Accruing Greater Than 90 Days    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial real estate - non-owner occupied | Rate Reduction or Rate Reduction with Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 3,142  
Commercial real estate - non-owner occupied | Term Extension and/or Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 177  
Residential real estate    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 126  
% of Total Class of Loans 0.01%  
Nonaccrual loans modified $ 96  
Loans modified 219  
Residential real estate | Current    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 123  
Residential real estate | Accruing 30-59 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Residential real estate | Accruing 60-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Residential real estate | Accruing Greater Than 90 Days    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Residential real estate | Rate Reduction or Rate Reduction with Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 0  
Residential real estate | Term Extension and/or Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 126  
Commercial and financial    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 4,337  
% of Total Class of Loans 0.28%  
Nonaccrual loans modified $ 1,321  
Loans modified 4,483  
Commercial and financial | Current    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 3,162  
Commercial and financial | Accruing 30-59 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial and financial | Accruing 60-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial and financial | Accruing Greater Than 90 Days    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 0  
Commercial and financial | Rate Reduction or Rate Reduction with Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 3,524  
Commercial and financial | Term Extension and/or Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 813  
Consumer    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 1,118  
% of Total Class of Loans 0.51%  
Nonaccrual loans modified $ 233  
Loans modified 1,483  
Consumer | Current    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 341  
Consumer | Accruing 30-59 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 429  
Consumer | Accruing 60-89 Days Past Due    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 288  
Consumer | Accruing Greater Than 90 Days    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Loans modified 191  
Consumer | Rate Reduction or Rate Reduction with Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total 84  
Consumer | Term Extension and/or Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Total $ 1,034  
v3.24.3
Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning Balance $ 141,641 $ 159,715 $ 148,931 $ 113,895 $ 113,895
Allowance on PCD Loans Acquired During the Period       18,879  
Provision for Credit Losses 6,273 2,694 12,559 33,528  
Charge- Offs (8,584) (13,123) (24,637) (19,468) (24,795)
Recoveries 1,139 375 3,616 2,827  
Ending Balance 140,469 149,661 140,469 149,661 148,931
Construction and land development          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning Balance 5,493 6,960 8,637 6,464 6,464
Allowance on PCD Loans Acquired During the Period       5  
Provision for Credit Losses 1,562 725 (1,593) 1,208  
Charge- Offs 0 0 (1) 0 0
Recoveries 3 0 15 8  
Ending Balance 7,058 7,685 7,058 7,685 8,637
Commercial real estate - owner occupied          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning Balance 11,582 6,418 5,529 6,051 6,051
Allowance on PCD Loans Acquired During the Period       139  
Provision for Credit Losses 338 (353) 6,688 (127)  
Charge- Offs (2) 0 (304) 0 0
Recoveries 0 0 5 2  
Ending Balance 11,918 6,065 11,918 6,065 5,529
Commercial real estate - non-owner occupied          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning Balance 45,434 54,103 48,288 43,258 43,258
Allowance on PCD Loans Acquired During the Period       647  
Provision for Credit Losses 826 (1,677) (2,049) 8,461  
Charge- Offs (602) 0 (705) (109) (120)
Recoveries 18 15 142 184  
Ending Balance 45,676 52,441 45,676 52,441 48,288
Residential real estate          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning Balance 39,209 36,710 39,016 29,605 29,605
Allowance on PCD Loans Acquired During the Period       400  
Provision for Credit Losses (159) 2,009 (152) 8,659  
Charge- Offs (6) (44) (128) (312) (356)
Recoveries 104 60 412 383  
Ending Balance 39,148 38,735 39,148 38,735 39,016
Commercial and financial          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning Balance 28,429 40,272 34,343 15,648 15,648
Allowance on PCD Loans Acquired During the Period       17,527  
Provision for Credit Losses 3,003 2,932 6,208 11,548  
Charge- Offs (6,180) (11,814) (16,786) (15,183) (18,565)
Recoveries 726 135 2,213 1,985  
Ending Balance 25,978 31,525 25,978 31,525 34,343
Consumer          
Financing Receivable, Allowance for Credit Loss [Roll Forward]          
Beginning Balance 11,494 15,252 13,118 12,869 12,869
Allowance on PCD Loans Acquired During the Period       161  
Provision for Credit Losses 703 (942) 3,457 3,779  
Charge- Offs (1,794) (1,265) (6,713) (3,864) (5,754)
Recoveries 288 165 829 265  
Ending Balance $ 10,691 $ 13,210 $ 10,691 $ 13,210 $ 13,118
v3.24.3
Allowance for Credit Losses - Narrative (Details)
$ in Millions
 3 Months Ended
Sep. 30, 2024
USD ($)
Receivables [Abstract]  
Decrease of allowance for credit loss $ (1.2)
% of Total Class of Loans 1.38%
Loan held for investment $ 140.5
% of load held for investment (0.80%)
v3.24.3
Derivatives - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Securities fair value hedges        
Derivative [Line Items]        
Reclassification of fair value hedge from AOCI into income $ (2.8)   $ (2.0)  
Fair value hedge gain (loss) reclassified 0.3 $ 0.2 0.3 $ 0.5
Residential mortgage fair value hedges        
Derivative [Line Items]        
Gain (loss) on derivative instruments $ 0.9   $ (1.8)  
v3.24.3
Derivatives - Schedule of Derivative Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Interest rate contract | Other Assets and Other Liabilities    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional amount $ 817,762 $ 605,735
Fair value of derivative assets and liabilities 26,259 28,804
Securities fair value hedges | Other Assets | Fair Value Hedging    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional amount 400,000 400,000
Fair value of derivative assets and liabilities 692 2,677
Residential mortgage fair value hedges | Other Liabilities | Fair Value Hedging    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional amount 400,000 200,000
Fair value of derivative assets and liabilities 794 75
Interest Rate Contract, Risk Participation Agreements    
Derivative Instruments, Gain (Loss) [Line Items]    
Notional amount $ 18,400 $ 9,400
v3.24.3
Derivatives - Fair Value Hedges (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Derivative [Line Items]    
Portfolio layer method amount designated as hedged $ 400,000 $ 200,000
Securities available-for-sale    
Derivative [Line Items]    
Carrying amount of the hedged items 526,845 584,108
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items 313 2,643
Amortized cost basis and unallocated basis adjustments used in hedging relationships 608,400 680,600
Loans, net    
Derivative [Line Items]    
Carrying amount of the hedged items 599,743 633,693
Cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged items 974 44
Amortized cost basis and unallocated basis adjustments used in hedging relationships $ 400,000 $ 200,000
v3.24.3
Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold Under Agreements to Repurchase and Securities Pledged (Details) - Asset Pledged as Collateral - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Fair value of pledged securities - overnight and continuous:    
Fair value of debt securities pledged as collateral $ 1,500,000  
Fair Value | Repurchase Agreement | Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities    
Fair value of pledged securities - overnight and continuous:    
Fair value of debt securities pledged as collateral $ 253,244 $ 396,378
v3.24.3
Regulatory Capital (Details)
Sep. 30, 2024
Banking And Thrift Disclosure [Abstract]  
Regulatory threshold percentage for well-capitalized institutions 0.065
v3.24.3
Fair Value - Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Financial Assets    
Debt securities available-for-sale $ 2,160,055 $ 1,836,020
Other real estate owned 6,421 7,560
Fair Value, Measurements, Recurring    
Financial Assets    
Debt securities available-for-sale 2,160,055 1,836,020
Derivative financial instruments 26,951 31,481
Loans held for sale 11,039 4,391
Equity securities 13,918 13,623
Financial Liabilities    
Derivative financial instruments 27,053 28,879
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial Assets    
Debt securities available-for-sale 197 192
Derivative financial instruments 0 0
Loans held for sale 0 0
Equity securities 13,918 13,623
Financial Liabilities    
Derivative financial instruments 0 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)    
Financial Assets    
Debt securities available-for-sale 2,159,858 1,835,828
Derivative financial instruments 26,951 31,481
Loans held for sale 11,039 4,391
Equity securities 0 0
Financial Liabilities    
Derivative financial instruments 27,053 28,879
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)    
Financial Assets    
Debt securities available-for-sale 0 0
Derivative financial instruments 0 0
Loans held for sale 0 0
Equity securities 0 0
Financial Liabilities    
Derivative financial instruments 0 0
Fair Value, Measurements, Nonrecurring    
Financial Assets    
Loans 3,974 15,242
Other real estate owned 6,421 7,560
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial Assets    
Loans 0 0
Other real estate owned 0 0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)    
Financial Assets    
Loans 0 0
Other real estate owned 0 0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)    
Financial Assets    
Loans 3,974 15,242
Other real estate owned $ 6,421 $ 7,560
v3.24.3
Fair Value - Narrative (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Allowance for credit losses $ 140,469 $ 141,641 $ 148,931 $ 149,661 $ 159,715 $ 113,895
Collateral-Dependent Real Estate            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Fair value of impaired loans 6,100   17,800      
Allowance for credit losses $ 2,100   $ 2,600      
v3.24.3
Fair Value - Carrying Amount and Fair Value of Other Significant Financial Instruments Not Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Financial Assets    
Held-to-maturity debt securities $ 646,050 $ 680,313
Time deposits with other banks 5,207 5,857
Loans, net 10,064,812 9,914,009
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial Assets    
Time deposits with other banks 0 0
Loans, net 0 0
Financial Liabilities    
Deposits 0 0
FHLB borrowings 0 0
Long-term debt 0 0
Significant Other Observable Inputs (Level 2)    
Financial Assets    
Time deposits with other banks 5,206 5,756
Loans, net 0 0
Financial Liabilities    
Deposits 0 0
FHLB borrowings 240,697 49,745
Long-term debt 93,092 100,851
Significant Unobservable Inputs (Level 3)    
Financial Assets    
Time deposits with other banks 0 0
Loans, net 9,933,594 9,805,693
Financial Liabilities    
Deposits 12,242,892 11,775,613
FHLB borrowings 0 0
Long-term debt 0 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial Assets    
Held-to-maturity debt securities 0 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)    
Financial Assets    
Held-to-maturity debt securities 538,485 558,359
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)    
Financial Assets    
Held-to-maturity debt securities 0 0
Carrying Value    
Financial Assets    
Time deposits with other banks 5,207 5,857
Loans, net 10,060,837 9,898,767
Financial Liabilities    
Deposits 12,243,585 11,776,935
FHLB borrowings 245,000 50,000
Long-term debt 106,800 109,458
Carrying Value | Fair Value, Measurements, Recurring    
Financial Assets    
Held-to-maturity debt securities $ 646,050 $ 680,313
v3.24.3
Business Combinations - Narrative (Details)
$ in Thousands
 9 Months Ended
Jan. 31, 2023
USD ($)
branch
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Business Acquisition [Line Items]              
Goodwill     $ 732,417   $ 732,417    
Allowance for credit losses   $ 149,661 $ 140,469 $ 141,641 $ 148,931 $ 159,715 $ 113,895
Acquisition costs   $ 33,200          
Professional Holding Corp.              
Business Acquisition [Line Items]              
Number of branches operated | branch 9            
Percentage of common stock acquired 100.00%            
Per share exchange ratio (in shares) 0.8909            
Goodwill $ 251,674            
Fair value of options and warrants converted 10,304            
Allowance for credit losses 45,500            
Measurement period adjustment $ (5,544)            
Intangible assets weighted average useful life 8 years            
Professional Holding Corp. | PCD Loans              
Business Acquisition [Line Items]              
Allowance for credit losses at acquisition $ 18,879            
Professional Holding Corp. | Acquired Non-PCD Loans              
Business Acquisition [Line Items]              
Allowance for credit losses $ 26,600            
v3.24.3
Business Combinations - Purchase Price (Details) - Professional Holding Corp.
$ / shares in Units, shares in Thousands, $ in Thousands
Jan. 31, 2023
USD ($)
$ / shares
shares
Business Acquisition [Line Items]  
Number of common shares outstanding (in shares) | shares 14,358
Per share exchange ratio (in shares) 0.8909
Number of shares of SBCF common stock issues (in shares) | shares 12,792
Multiplied by common stock price per share (in dollars per share) | $ / shares $ 32.11
Value of common stock issued $ 410,738
Payments To Acquire Fractional Shares 5
Fair value of options and warrants converted 10,304
Total purchase price $ 421,047
v3.24.3
Business Combinations - Fair Value of the Assets Purchased, Including Goodwill and Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2023
Sep. 30, 2024
Dec. 31, 2023
Assets:      
Goodwill   $ 732,417 $ 732,417
Professional Holding Corp.      
Assets:      
Cash and cash equivalents $ 141,680    
Measurement Period Adjustments, Cash and cash equivalents 0    
Investment securities 167,059    
Measurement Period Adjustments, Investment Securities 0    
Loans 1,986,169    
Measurement Period Adjustments, Loans (5,544)    
Bank premises and equipment 2,478    
Measurement Period Adjustments, Bank premises and equipment 0    
Core deposit intangibles 48,885    
Measurement Period Adjustments, Core deposit intangibles 0    
Goodwill 251,674    
Measurement Period Adjustments, Goodwill 3,583    
BOLI 55,071    
Measurement Period Adjustments, BOLI 0    
Other Assets 76,793    
Measurement Period Adjustments, Other Assets 2,561    
Total Assets 2,729,809    
Measurement Period Adjustments, Total Assets 600    
Liabilities:      
Deposits 2,119,341    
Measurement Period Adjustments, Deposits 0    
Subordinated debt 21,141    
Measurement Period Adjustments, Subordinated debt 0    
Other Liabilities 168,280    
Measurement Period Adjustments, Other Liabilities 600    
Total Liabilities 2,308,762    
Measurement Period Adjustments, Total Liabilities 600    
Professional Holding Corp. | Initially Measured      
Assets:      
Cash and cash equivalents 141,680    
Investment securities 167,059    
Loans 1,991,713    
Bank premises and equipment 2,478    
Core deposit intangibles 48,885    
Goodwill 248,091    
BOLI 55,071    
Other Assets 74,232    
Total Assets 2,729,209    
Liabilities:      
Deposits 2,119,341    
Subordinated debt 21,141    
Other Liabilities 167,680    
Total Liabilities $ 2,308,162    
v3.24.3
Business Combinations - Fair Value of Acquired Loans (Details) - Professional Holding Corp.
$ in Thousands
Jan. 31, 2023
USD ($)
Business Acquisition [Line Items]  
Book Balance $ 2,139,222
Fair Value 1,986,169
Construction and land development  
Business Acquisition [Line Items]  
Book Balance 156,048
Fair Value 151,012
Commercial real estate - owner occupied  
Business Acquisition [Line Items]  
Book Balance 293,473
Fair Value 274,068
Commercial real estate - non-owner occupied  
Business Acquisition [Line Items]  
Book Balance 752,393
Fair Value 692,746
Residential real estate  
Business Acquisition [Line Items]  
Book Balance 509,305
Fair Value 483,611
Commercial and financial  
Business Acquisition [Line Items]  
Book Balance 392,396
Fair Value 350,628
Consumer  
Business Acquisition [Line Items]  
Book Balance 33,656
Fair Value 32,153
PPP Loans  
Business Acquisition [Line Items]  
Book Balance 1,951
Fair Value $ 1,951
v3.24.3
Business Combinations - Purchased Credit Impaired Loans (Details) - PCD Loans - Professional Holding Corp.
$ in Thousands
Jan. 31, 2023
USD ($)
Business Acquisition [Line Items]  
Book balance of loans at acquisition $ 155,031
Allowance for credit losses at acquisition (18,879)
Non-credit related discount (12,361)
Total PCD loans acquired $ 123,791
v3.24.3
Subsequent Event (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2024
Sep. 30, 2024
Sep. 30, 2024
Sep. 30, 2023
Subsequent Event [Line Items]        
Gross losses from sale of securities   $ 300 $ 4,000  
Proceeds from sale of debt securities available-for-sale     $ 104,425 $ 30,490
Subsequent Event        
Subsequent Event [Line Items]        
Securities weighted average yield 2.80%      
Gross losses from sale of securities $ 8,000      
Proceeds from sale of debt securities available-for-sale $ 113,000      
Subsequent Event | Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities        
Subsequent Event [Line Items]        
Securities weighted average yield 5.40%      
Subsequent Event | Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities | Maximum        
Subsequent Event [Line Items]        
Debt securities term 3 years