ALLIANCE RESOURCE PARTNERS LP, 10-Q filed on 11/7/2022
Quarterly Report
v3.22.2.2
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2022
Nov. 07, 2022
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2022  
Entity File Number 0-26823  
Entity Registrant Name ALLIANCE RESOURCE PARTNERS LP  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 73-1564280  
Entity Address, Address Line One 1717 South Boulder Avenue, Suite 400  
Entity Address, City or Town Tulsa  
Entity Address, State or Province OK  
Entity Address, Postal Zip Code 74119  
City Area Code 918  
Local Phone Number 295-7600  
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  
Title of 12(b) Security Common units  
Trading Symbol ARLP  
Security Exchange Name NASDAQ  
Entity Common Units Outstanding   127,195,219
Entity Central Index Key 0001086600  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3  
Amendment Flag false  
v3.22.2.2
CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
CURRENT ASSETS:    
Cash and cash equivalents $ 278,471 $ 122,403
Trade receivables 190,435 129,531
Other receivables 6,873 680
Inventories, net 98,765 60,302
Advance royalties 3,458 4,958
Prepaid expenses and other assets 14,733 21,354
Total current assets 592,735 339,228
PROPERTY, PLANT AND EQUIPMENT:    
Property, plant and equipment, at cost 3,765,400 3,608,347
Less accumulated depreciation, depletion and amortization (2,034,345) (1,909,669)
Total property, plant and equipment, net 1,731,055 1,698,678
OTHER ASSETS:    
Advance royalties 70,181 63,524
Equity method investments 46,158 26,325
Equity securities 32,639  
Goodwill 4,373 4,373
Operating lease right-of-use assets 15,395 14,158
Other long-term assets 11,845 13,120
Total other assets 180,591 121,500
TOTAL ASSETS 2,504,381 2,159,406
CURRENT LIABILITIES:    
Accounts payable 97,032 69,586
Accrued taxes other than income taxes 25,133 17,787
Accrued payroll and related expenses 42,966 36,805
Accrued interest 12,500 5,000
Workers' compensation and pneumoconiosis benefits 12,296 12,293
Current finance lease obligations 302 840
Current operating lease obligations 2,757 1,820
Other current liabilities 45,375 17,375
Current maturities, long-term debt, net 15,133 16,071
Total current liabilities 253,494 177,577
LONG-TERM LIABILITIES:    
Long-term debt, excluding current maturities, net 409,944 418,942
Pneumoconiosis benefits 109,687 107,560
Accrued pension benefit 23,415 25,590
Workers' compensation 39,031 44,911
Asset retirement obligations 124,622 123,517
Long-term finance lease obligations 533 618
Long-term operating lease obligations 12,778 12,366
Deferred income tax liabilities 37,607 391
Other liabilities 25,450 21,865
Total long-term liabilities 783,067 755,760
Total liabilities 1,036,561 933,337
COMMITMENTS AND CONTINGENCIES - (NOTE 3)
ARLP Partners' Capital:    
Limited Partners - Common Unitholders 127,195,219 units outstanding 1,518,679 1,279,183
Accumulated other comprehensive loss (61,843) (64,229)
Total ARLP Partners' Capital 1,456,836 1,214,954
Noncontrolling interest 10,984 11,115
Total Partners' Capital 1,467,820 1,226,069
TOTAL LIABILITIES AND PARTNERS' CAPITAL $ 2,504,381 $ 2,159,406
v3.22.2.2
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Sep. 30, 2022
Dec. 31, 2021
CONDENSED CONSOLIDATED BALANCE SHEETS    
Common units outstanding 127,195,219 127,195,219
v3.22.2.2
CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
SALES AND OPERATING REVENUES:        
Revenues $ 628,420 $ 415,439 $ 1,705,784 $ 1,096,504
EXPENSES:        
Outside coal purchases   6,065 151 6,179
General and administrative 21,341 18,655 62,394 51,651
Depreciation, depletion and amortization 70,143 68,763 200,191 192,698
Total operating expenses 450,330 348,711 1,264,587 938,441
INCOME FROM OPERATIONS 178,090 66,728 441,197 158,063
Interest expense (net of interest capitalized for the three and nine months ended September 30, 2022 and 2021 of $264, $123, $505 and $314, respectively) (9,245) (9,408) (28,304) (29,646)
Interest income 426 19 554 51
Equity method investment income 2,108 703 4,576 1,106
Other income (expense) 192 (84) 1,337 (2,632)
INCOME BEFORE INCOME TAXES 171,571 57,958 419,360 126,942
INCOME TAX EXPENSE 6,600 234 55,646 227
NET INCOME 164,971 57,724 363,714 126,715
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTEREST (364) (176) (977) (384)
NET INCOME ATTRIBUTABLE TO ARLP $ 164,607 $ 57,548 $ 362,737 $ 126,331
EARNINGS PER LIMITED PARTNER UNIT - BASIC (in dollars per unit) $ 1.25 $ 0.44 $ 2.76 $ 0.97
EARNINGS PER LIMITED PARTNER UNIT - DILUTED (in dollars per unit) $ 1.25 $ 0.44 $ 2.76 $ 0.97
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - BASIC (in units) 127,195,219 127,195,219 127,195,219 127,195,219
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - DILUTED (in units) 127,195,000 127,195,000 127,195,000 127,195,000
Product        
EXPENSES:        
Operating expenses (excluding depreciation, depletion and amortization) $ 330,298 $ 233,201 $ 908,546 $ 642,760
Coal sales        
SALES AND OPERATING REVENUES:        
Revenues 550,563 362,264 1,470,730 975,725
Oil & gas royalties        
SALES AND OPERATING REVENUES:        
Revenues 35,312 20,109 102,166 51,222
Transportation        
SALES AND OPERATING REVENUES:        
Revenues 28,548 22,027 93,305 45,153
EXPENSES:        
Operating expenses (excluding depreciation, depletion and amortization) 28,548 22,027 93,305 45,153
Other revenues        
SALES AND OPERATING REVENUES:        
Revenues $ 13,997 $ 11,039 $ 39,583 $ 24,404
v3.22.2.2
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
CONDENSED CONSOLIDATED STATEMENTS OF INCOME        
Interest expense, interest capitalized $ 264 $ 123 $ 505 $ 314
v3.22.2.2
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
NET INCOME $ 164,971 $ 57,724 $ 363,714 $ 126,715
OTHER COMPREHENSIVE INCOME:        
OTHER COMPREHENSIVE INCOME 802 2,231 2,386 6,693
COMPREHENSIVE INCOME 165,773 59,955 366,100 133,408
Less: Comprehensive income attributable to noncontrolling interest (364) (176) (977) (384)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ARLP 165,409 59,779 365,123 133,024
Defined benefit pension plan        
OTHER COMPREHENSIVE INCOME:        
Amortization of prior service cost [1] 47 47 140 140
Amortization of net actuarial loss [1] 495 1,141 1,467 3,424
Total recognized in accumulated other comprehensive loss 542 1,188 1,607 3,564
Pneumoconiosis benefits        
OTHER COMPREHENSIVE INCOME:        
Amortization of net actuarial loss [1] 260 1,043 779 3,129
Total recognized in accumulated other comprehensive loss $ 260 $ 1,043 $ 779 $ 3,129
[1] Amortization of prior service cost and net actuarial loss is included in the computation of net periodic benefit cost (see Notes 14 and 16 for additional details).
v3.22.2.2
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS      
CASH FLOWS FROM OPERATING ACTIVITIES $ 548,554 $ 310,977  
Property, plant and equipment:      
Capital expenditures (221,286) (88,661)  
Increase in accounts payable and accrued liabilities 39,500 2,281  
Proceeds from sale of property, plant and equipment 5,006 6,432  
Contributions to equity method investments (20,220)    
Purchase of equity security (32,639)    
Distributions received from investments in excess of cumulative earnings 387 1,088  
Payments for acquisitions of business (11,391)    
Escrow deposit for oil & gas reserve acquisitions (4,150) (1,550)  
Other (2,704)    
Net cash used in investing activities (247,497) (80,410)  
CASH FLOWS FROM FINANCING ACTIVITIES:      
Borrowings under securitization facility 27,500 35,000  
Payments under securitization facility (27,500) (90,900)  
Payments on equipment financings (12,360) (12,888)  
Borrowings under revolving credit facilities   15,000  
Payments under revolving credit facilities   (102,500)  
Borrowings from line of credit   3,230  
Payments on finance lease obligations (623) (568)  
Payment of debt issuance costs   (113)  
Payments for purchase of units and tax withholdings related to settlements under deferred compensation plans   (1,090)  
Distributions paid to Partners (130,898) (26,086) $ (52,158)
Other (1,108) (615)  
Net cash used in financing activities (144,989) (181,530)  
NET CHANGE IN CASH AND CASH EQUIVALENTS 156,068 49,037  
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 122,403 55,574 55,574
CASH AND CASH EQUIVALENTS AT END OF PERIOD 278,471 104,611 $ 122,403
SUPPLEMENTAL CASH FLOW INFORMATION:      
Cash paid for interest 18,708 20,045  
Cash paid for income taxes 17,404 11  
SUPPLEMENTAL NON-CASH ACTIVITY:      
Accounts payable for purchase of property, plant and equipment 47,825 8,012  
Right-of-use assets acquired by operating lease $ 1,291    
Market value of common units issued under deferred compensation plans before tax withholding requirements   $ 1,082  
v3.22.2.2
ORGANIZATION AND PRESENTATION
 9 Months Ended
Sep. 30, 2022
ORGANIZATION AND PRESENTATION  
ORGANIZATION AND PRESENTATION

1.ORGANIZATION AND PRESENTATION

​

Significant Relationships Referenced in Notes to Condensed Consolidated Financial Statements

​

●References to "we," "us," "our" or "ARLP Partnership" mean the business and operations of Alliance Resource Partners, L.P., the parent company, as well as its consolidated subsidiaries.
●References to "ARLP" mean Alliance Resource Partners, L.P., individually as the parent company, and not on a consolidated basis.
●References to "MGP" mean Alliance Resource Management GP, LLC, ARLP's general partner.  
●References to "Mr. Craft" mean Joseph W. Craft III, the Chairman, President and Chief Executive Officer of MGP.
●References to "Intermediate Partnership" mean Alliance Resource Operating Partners, L.P., the intermediate partnership of Alliance Resource Partners, L.P.
●References to "Alliance Coal" mean Alliance Coal, LLC, the holding company for our coal mining operations.
●References to "Alliance Minerals" mean Alliance Minerals, LLC, the holding company for our oil and gas mineral interests.
●References to "Alliance Resource Properties" mean Alliance Resource Properties, LLC, the land holding company for certain of our coal mineral interests, including the subsidiaries of Alliance Resource Properties, LLC.

​

Organization

​

ARLP is a Delaware limited partnership listed on the NASDAQ Global Select Market under the ticker symbol "ARLP."  ARLP was formed in May 1999 and completed its initial public offering on August 19, 1999 when it acquired substantially all of the coal production and marketing assets of Alliance Resource Holdings, Inc., a Delaware corporation, and its subsidiaries.  We are managed by our general partner, MGP, a Delaware limited liability company which holds a non-economic general partner interest in ARLP.

​

Change in Tax Status

​

On March 15, 2022, Alliance Minerals changed its federal income tax status from a pass-through entity to a taxable entity via a "check the box" election (the "Tax Election"), which became effective January 1, 2022. This election for Alliance Minerals is anticipated to reduce the total income tax burden on our oil & gas royalties, as Alliance Minerals will pay entity-level taxes at corporate tax rates that are well below individual tax rates that would otherwise be paid by our unitholders. For more information on the Tax Election please see Note 8 – Income Taxes.

​

Francis Investment

​

On April 5, 2022, we committed to invest up to $50 million in Francis Renewable Energy, LLC ("Francis") through the purchase of preferred equity interests.  As of September 30, 2022, we have elected to hold our commitment to Francis at our initial $20 million convertible note investment. Francis currently is active in the installation, management and operation of metered-for-fee, public-access electric vehicle ("EV") charging stations. Francis also develops and constructs EV charging stations for third-party customers.  Our investment in Francis furthers our business strategy to develop strategic relationships and invest in attractive opportunities in the fast-growing energy infrastructure transition.  For more information on this investment please see Note 9 – Variable Interest Entities.

​

Infinitum Investment

​

On April 29, 2022, we purchased $32.6 million of Series D Preferred Stock from Infinitum Electric, Inc. ("Infinitum"), a Texas-based startup developer and manufacturer of electric motors featuring printed circuit board stators which have the potential to result in motors that are smaller, lighter, quieter, more efficient and capable of operating at a fraction of the carbon footprint of conventional electric motors.  The preferred stock provides for non-cumulative dividends when and if declared by Infinitum's board of directors.  Each share is convertible, at any time, at our option, into shares of common stock of Infinitum.  Our investment in Infinitum furthers our business strategy to develop strategic relationships and invest in attractive opportunities in the fast-growing energy infrastructure transition.  For more information on this investment please see Note 10 – Investments.

​

On November 2, 2022, we purchased an additional $9.4 million of Series D Preferred Stock in Infinitum.

​

NGP ETP IV Investment

​

On June 2, 2022, we committed to purchase $25.0 million of limited partner interests in NGP ETP IV, L.P. ("NGP ETP IV"), a private equity fund sponsored by NGP Energy Capital Management, LLC ("NGP").   NGP ETP IV focuses on investments that are part of the global transition toward a lower carbon economy by partnering with top tier management teams and investing growth equity in companies that drive or enable the growth of renewable energy, the electrification of our economy or the efficient use of energy. For more information on this investment please see Note 9 – Variable Interest Entities.

​

Belvedere Acquisition

​

On September 9, 2022, we acquired approximately 394 net oil & gas royalty acres in the Delaware Basin from Belvedere Operating, LLC ("Belvedere") for a purchase price of $11.4 million (the "Belvedere Acquisition"). This acquisition enhances our ownership position in the Permian Basin and furthers our business strategy to grow our Oil & Gas Royalties segment. For more information on this acquisition please see Note 3 – Acquisition.

​

Basis of Presentation

​

The accompanying condensed consolidated financial statements include the accounts and operations of the ARLP Partnership and present our financial position as of September 30, 2022 and December 31, 2021, the results of our operations and comprehensive income for the three and nine months ended September 30, 2022 and 2021, and cash flows for the nine months ended September 30, 2022 and 2021.  All intercompany transactions and accounts have been eliminated.

​

These condensed consolidated financial statements and notes are prepared pursuant to the rules and regulations of the Securities and Exchange Commission for interim reporting and do not include all the information normally included with financial statements prepared in accordance with generally accepted accounting principles ("GAAP") of the United States.  These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2021.

​

These condensed consolidated financial statements and notes are unaudited. However, in the opinion of management, these condensed consolidated financial statements reflect all normal recurring adjustments necessary for a fair presentation of the results for the periods presented.  Results for interim periods are not necessarily indicative of results to be expected for the full year ending December 31, 2022.

​

Use of Estimates

​

The preparation of the ARLP Partnership's condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts and disclosures in our condensed consolidated financial statements.  Actual results could differ from those estimates.

​

Income Taxes

​

We are not a taxable entity for federal or state income tax purposes; the tax effect of our activities accrues to our unitholders. Although publicly traded partnerships as a general rule are taxed as corporations, we qualify for an exemption because at least 90% of our income consists of qualifying income, as defined in Section 7704(c) of the Internal Revenue Code.  Net income for financial statement purposes may differ significantly from taxable income reportable to unitholders as a result of differences between the tax basis and financial reporting basis of assets and liabilities and the taxable income allocation requirements under our partnership agreement. Individual unitholders have different investment bases depending upon the timing and price of acquisition of their partnership units. Furthermore, each unitholder's tax accounting, which is partially dependent upon the unitholder's tax position, differs from the accounting followed in our consolidated financial statements.  Accordingly, the aggregate difference in the basis of our net assets for financial and tax reporting purposes cannot be readily determined because information regarding each unitholder's tax attributes in our partnership is not available to us.

​

Our subsidiary Alliance Minerals within our Oil & Gas Royalties segment and certain other subsidiaries within our Other, Corporate and Elimination category are subject to federal and state income taxes.  We use the liability method of accounting for income taxes, under which deferred tax assets and liabilities are recognized for the future tax consequences of (i) temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities and (ii) operating losses and tax credit carryforwards.  Deferred income tax assets and liabilities are based on enacted rates applicable to the future period when those temporary differences are expected to be recovered or settled.  The effect of a change in tax status or a change in tax rates on deferred tax assets and liabilities is recognized in the period the change in status is elected or rate change is enacted.  A valuation allowance is provided for deferred tax assets when it is more likely than not the deferred tax assets will not be realized.

v3.22.2.2
NEW ACCOUNTING STANDARDS
 9 Months Ended
Sep. 30, 2022
NEW ACCOUNTING STANDARDS  
NEW ACCOUNTING STANDARDS

2.NEW ACCOUNTING STANDARDS

​

New Accounting Standards Issued and Adopted

​

In November 2021, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance ("ASU 2021-10").  ASU 2021-10 increases the transparency of government assistance including the disclosure of (1) the types of assistance, (2) an entity's accounting for the assistance, and (3) the effect of the assistance on an entity’s financial statements.  We adopted ASU 2021-10 on January 1, 2022.  The adoption of ASU 2021-10 did not have a material impact on our condensed consolidated financial statements.
v3.22.2.2
ACQUISITIONS
 9 Months Ended
Sep. 30, 2022
ACQUISITION  
ACQUISITION

3.ACQUISITION

​

Belvedere

​

On September 9, 2022 (the "Belvedere Acquisition Date"), our subsidiary, Alliance Royalty, LLC acquired approximately 394 net oil & gas royalty acres in the Delaware Basin from Belvedere for a cash purchase price of $11.4 million, which was funded with cash on hand. This acquisition gives us increased exposure to a prolific area of the Delaware Basin and is within close proximity to reserves that we currently own.  Because the mineral interests acquired in the Belvedere Acquisition include royalty interests in both developed properties and undeveloped properties, we have determined that the acquisition should be accounted for as a business combination and the underlying assets should be recorded at fair value as of the Belvedere Acquisition Date on our condensed consolidated balance sheet.

​

The following table summarizes the fair value allocation of assets acquired as of the Belvedere Acquisition Date:

​

​

​

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

Mineral interests in proved properties

​

$

7,724

​

Mineral interests in unproved properties

​

​

3,667

​

​

​

$

11,391

​

​

The fair value of the mineral interests was determined using an income approach consisting of a discounted cash flow model.  The assumptions used in the discounted cash flow model included estimated production, projected cash flows, forward oil & gas prices and risk adjusted discount rates.  Certain assumptions used are not observable in active markets; therefore, the fair value measurements represent Level 3 fair value measurements.  

​

The amounts of revenue and earnings from the mineral interests acquired in the Belvedere Acquisition included in our condensed consolidated statements of income since the Belvedere Acquisition Date are as follows:

​

​

​

​

​

​

Three Months Ended

​

​

September 30, 

​

​

2022

    

​

(in thousands)

​

​

​

​

Revenue

$

112

​

Net income

 

78

​

​

The following represents our pro forma revenues and net income for the three and nine months ended September 30, 2022 and 2021 as if the mineral interests acquired in the Belvedere Acquisition had been included in our consolidated results since January 1, 2021.  These amounts have been calculated after applying our accounting policies.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

​

​

​

(in thousands)

​

Total revenues

​

​

​

​

​

​

​

​

​

​

​

​

​

As reported

​

$

628,420

​

$

415,439

​

$

1,705,784

​

$

1,096,504

​

Pro forma

​

​

628,645

​

​

415,943

​

​

1,706,641

​

​

1,097,261

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

​

​

​

​

​

​

​

​

​

​

​

​

​

As reported

​

$

164,971

​

$

57,724

​

$

363,714

​

$

126,715

​

Pro forma

​

​

165,168

​

​

58,154

​

​

364,472

​

​

127,375

​

​
v3.22.2.2
CONTINGENCIES
 9 Months Ended
Sep. 30, 2022
CONTINGENCIES  
CONTINGENCIES

4.CONTINGENCIES

​

We are party to litigation that has been initiated against certain of our subsidiaries in which the plaintiffs allege violations of the Fair Labor Standards Act and Kentucky Wage and Hour Act due to an alleged failure to compensate for time "donning" and "doffing" equipment and to account for certain bonuses in the calculation of overtime rates and pay.  The plaintiffs seek class or collective action certification.  Because the litigation of these matters is in the early stages, we cannot reasonably estimate a range of potential exposure at this time.  We believe the plaintiffs' claims are without merit and our ultimate exposure, if any, will not be material to our results of operations or financial position and we intend to defend the litigation vigorously.  However, if our current belief that the claims are without merit is not upheld, it is reasonably possible that the ultimate resolution of these matters could result in a potential loss that may be material to our results of operations.

​

We also have various other lawsuits, claims and regulatory proceedings incidental to our business that are pending against the ARLP Partnership.  We record an accrual for a potential loss related to these matters when, in management's opinion, such loss is probable and reasonably estimable.  Based on known facts and circumstances, we believe the ultimate outcome of these outstanding lawsuits, claims and regulatory proceedings will not have a material adverse effect on our financial condition, results of operations or liquidity.  However, if the results of these matters are different from management's current expectations and in amounts greater than our accruals, such matters could have a material adverse effect on our business and operations.
v3.22.2.2
INVENTORIES
 9 Months Ended
Sep. 30, 2022
INVENTORIES  
INVENTORIES

5.INVENTORIES

​

Inventories consist of the following:

​

​

​

​

​

​

​

​

​

​

    

September 30, 

​

December 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

Coal

​

$

48,676

​

$

24,845

​

Supplies (net of reserve for obsolescence of $5,914 and $5,554, respectively)

​

 

50,089

​

 

35,457

​

Total inventories, net

​

$

98,765

​

$

60,302

​

​
v3.22.2.2
FAIR VALUE MEASUREMENTS
 9 Months Ended
Sep. 30, 2022
FAIR VALUE MEASUREMENTS  
FAIR VALUE MEASUREMENTS

6.FAIR VALUE MEASUREMENTS

​

The following table summarizes our fair value measurements within the hierarchy not included elsewhere in these notes:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

September 30, 2022

​

December 31, 2021

​

​

    

Level 1

    

Level 2

    

Level 3

    

Level 1

    

Level 2

    

Level 3

 

​

​

(in thousands)

​

Long-term debt

​

$

—

​

$

417,464

​

$

—

​

$

—

​

$

457,758

​

$

—

​

Total

​

$

—

​

$

417,464

​

$

—

​

$

—

​

$

457,758

​

$

—

​

​

The carrying amounts for cash equivalents, accounts receivable, accounts payable, accrued and other liabilities approximate fair value due to the short maturity of those instruments.

​

The estimated fair value of our long-term debt, including current maturities, is based on interest rates that we believe are currently available to us in active markets for issuance of debt with similar terms and remaining maturities (See Note 7 – Long-Term Debt).  The fair value of debt, which is based upon these interest rates, is classified as a Level 2 measurement under the fair value hierarchy.
v3.22.2.2
LONG-TERM DEBT
 9 Months Ended
Sep. 30, 2022
LONG-TERM DEBT  
LONG-TERM DEBT

7.LONG-TERM DEBT

​

Long-term debt consists of the following:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unamortized Discount and

​

​

​

Principal

​

Debt Issuance Costs

​

​

​

September 30, 

​

December 31, 

​

September 30, 

​

December 31, 

​

​

    

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Revolving credit facility

​

$

—

​

$

—

​

$

(3,281)

​

$

(5,019)

​

Senior notes

​

 

400,000

​

 

400,000

​

 

(2,362)

​

 

(3,048)

​

Securitization facility

​

​

—

​

​

—

​

​

—

​

​

—

​

May 2019 equipment financing

​

​

—

​

​

1,503

​

​

—

​

​

—

​

November 2019 equipment financing

​

​

23,846

​

​

31,972

​

​

—

​

​

—

​

June 2020 equipment financing

​

​

6,874

​

​

9,605

​

​

—

​

​

—

​

​

​

 

430,720

​

 

443,080

​

 

(5,643)

​

 

(8,067)

​

Less current maturities

​

 

(15,133)

​

 

(16,071)

​

 

—

​

 

—

​

Total long-term debt

​

$

415,587

​

$

427,009

​

$

(5,643)

​

$

(8,067)

​

​

Credit Facility.  On March 9, 2020, our Intermediate Partnership entered into a Fifth Amended and Restated Credit Agreement (the "Credit Agreement") with various financial institutions.  The Credit Agreement provides for a $459.5 million revolving credit facility, including a sublimit of $125 million for the issuance of letters of credit and a sublimit of $15.0 million for swingline borrowings (the "Revolving Credit Facility"), with a termination date of March 9, 2024.  

​

The Credit Agreement is guaranteed by certain of our Intermediate Partnership's material direct and indirect subsidiaries (the "Restricted Subsidiaries") and is secured by substantially all the assets of the Restricted Subsidiaries.  The Credit Agreement is also guaranteed by Alliance Minerals but the oil and gas mineral assets of Alliance Minerals and its direct and indirect subsidiaries (collectively with Alliance Minerals, the "Unrestricted Subsidiaries") are not collateral under the Credit Agreement.  Borrowings under the Revolving Credit Facility bear interest, at our option, at either (i) the Base Rate at the greater of three benchmarks or (ii) a Eurodollar Rate, plus margins for (i) or (ii), as applicable, that fluctuate depending upon the ratio of Consolidated Debt to Consolidated Cash Flow (each as defined in the Credit Agreement).  The Eurodollar Rate, with applicable margin, under the Revolving Credit Facility was 5.49% as of September 30, 2022.  On September 30, 2022, we had $44.1 million of letters of credit outstanding with $415.4 million available for borrowing under the Revolving Credit Facility. We incur an annual commitment fee of 0.35% on the undrawn portion of the Revolving Credit Facility.  We utilize the Revolving Credit Facility, as appropriate, for working capital requirements, capital expenditures and investments, scheduled debt payments and distribution payments.

​

The Credit Agreement contains various restrictions affecting the Intermediate Partnership and its Restricted Subsidiaries including, among other things, restrictions on incurrence of additional indebtedness and liens, sale of assets, investments, mergers and consolidations and transactions with affiliates, including transactions with Unrestricted Subsidiaries.  In each case, these restrictions are subject to various exceptions.  In addition, the payment of cash distributions is restricted if such payment would result in a fixed charge coverage ratio of less than 1.0 to 1.0 (as defined in the Credit Agreement) for the four most recently ended fiscal quarters.  The Credit Agreement requires the Intermediate Partnership to maintain (a) a debt to cash flow ratio of not more than 2.5 to 1.0, (b) a cash flow to interest expense ratio of not less than 3.0 to 1.0 and (c) a first lien debt to cash flow ratio of not more than 1.5 to 1.0, in each case, during the four most recently ended fiscal quarters. The debt to cash flow ratio, cash flow to interest expense ratio and first lien debt to cash flow ratio were 0.64 to 1.0, 17.63 to 1.0 and 0.05 to 1.0, respectively, for the trailing twelve months ended September 30, 2022.  We remained in compliance with the covenants of the Credit Agreement as of September 30, 2022 and anticipate remaining in compliance with the covenants.  

​

Senior Notes.  On April 24, 2017, the Intermediate Partnership and Alliance Resource Finance Corporation (as co-issuer), a wholly owned subsidiary of the Intermediate Partnership ("Alliance Finance"), issued an aggregate principal amount of $400.0 million of senior unsecured notes due 2025 ("Senior Notes") in a private placement to qualified institutional buyers.  The Senior Notes have a term of eight years, maturing on May 1, 2025 (the "Term") and accrue interest at an annual rate of 7.5%.  Interest is payable semi-annually in arrears on each May 1 and November 1.  The indenture governing the Senior Notes contains customary terms, events of default and covenants relating to, among other things, the incurrence of debt, the payment of distributions or similar restricted payments, undertaking transactions with affiliates and limitations on asset sales.  The issuers of the Senior Notes may redeem all or a part of the notes at any time at redemption prices set forth in the indenture governing the Senior Notes.    

​

Accounts Receivable Securitization.  On December 5, 2014, certain direct and indirect wholly owned subsidiaries of our Intermediate Partnership entered into a $100.0 million accounts receivable securitization facility ("Securitization Facility").  In January 2021, we reduced the borrowing availability under the facility to $60.0 million.  Under the Securitization Facility, certain subsidiaries sell certain trade receivables on an ongoing basis to our Intermediate Partnership, which then sells the trade receivables to AROP Funding, LLC ("AROP Funding"), a wholly owned bankruptcy-remote special purpose subsidiary of our Intermediate Partnership, which in turn borrows on a revolving basis up to $60.0 million secured by the trade receivables.  After the sale, Alliance Coal, as servicer of the assets, collects the receivables on behalf of AROP Funding.  The Securitization Facility bears interest based on a short-term bank yield index.  On September 30, 2022, we had $9.2 million of letters of credit outstanding with $50.8 million available for borrowing under the Securitization Facility. The agreement governing the Securitization Facility contains customary terms and conditions, including limitations with regards to certain customer credit ratings.  The Securitization Facility is scheduled to mature in January 2023.  On September 30, 2022, we had no outstanding balance under the Securitization Facility.  

​

May 2019 Equipment Financing.  On May 17, 2019, the Intermediate Partnership entered into an equipment financing arrangement accounted for as debt, wherein the Intermediate Partnership received $10.0 million in exchange for conveying its interest in certain equipment owned indirectly by the Intermediate Partnership and entering into a master lease agreement for that equipment (the "May 2019 Equipment Financing"). The May 2019 Equipment Financing contained customary terms and events of default and provided for thirty-six monthly payments with an implicit interest rate of 6.25%.  The May 2019 Equipment Financing matured on May 1, 2022 and the equipment reverted to the Intermediate Partnership.

​

November 2019 Equipment Financing.  On November 6, 2019, the Intermediate Partnership entered into an equipment financing arrangement accounted for as debt, wherein the Intermediate Partnership received $53.1 million in exchange for conveying its interest in certain equipment owned indirectly by the Intermediate Partnership and entering into a master lease agreement for that equipment (the "November 2019 Equipment Financing").  The November 2019 Equipment Financing contains customary terms and events of default and an implicit interest rate of 4.75%, providing for a four-year term with forty-seven monthly payments of $1.0 million and a balloon payment of $11.6 million upon maturity on November 6, 2023.  Upon maturity, the equipment will revert to the Intermediate Partnership.  

​

June 2020 Equipment Financing.  On June 5, 2020, the Intermediate Partnership entered into an equipment financing arrangement accounted for as debt, wherein the Intermediate Partnership received $14.7 million in exchange for conveying its interest in certain equipment owned indirectly by the Intermediate Partnership and entering into a master lease agreement for that equipment (the "June 2020 Equipment Financing"). The June 2020 Equipment Financing contains customary terms and events of default and provides for forty-eight monthly payments with an implicit interest rate of 6.1%, maturing on June 5, 2024. Upon maturity, the equipment will revert to the Intermediate Partnership.
v3.22.2.2
INCOME TAXES
 9 Months Ended
Sep. 30, 2022
INCOME TAXES  
INCOME TAXES

8.INCOME TAXES

​

Components of income tax expense are as follows:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

 

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Current:

​

​

​

​

​

​

​

​

​

​

​

​

​

Federal

​

$

5,944

​

$

2

​

$

17,153

​

$

1

​

State

​

 

387

​

 

—

​

 

1,218

​

 

—

​

​

​

 

6,331

​

 

2

​

 

18,371

​

 

1

​

Deferred:

​

​

​

​

​

​

​

​

​

​

​

​

​

Federal

​

 

267

​

 

188

​

 

34,932

​

 

182

​

State

​

 

2

​

 

44

​

 

2,343

​

 

44

​

​

​

 

269

​

 

232

​

 

37,275

​

 

226

​

Income tax expense

​

$

6,600

​

$

234

​

$

55,646

​

$

227

​

​

Alliance Minerals' Tax Election resulted in the recognition of an initial deferred tax liability of $37.3 million and a corresponding increase to income tax expense for the nine months ended September 30, 2022.  This increase in income tax expense reduced net income by $37.3 million, or approximately $0.29 per basic and diluted limited partner unit, for the nine months ended September 30, 2022. Recognition of the initial deferred tax liability and expense is primarily the result of the $177.0 million non-cash acquisition gain recognized in 2019 related to the acquisition of the remaining interests in AllDale Minerals LP ("AllDale I") and AllDale Minerals II, LP ("AllDale II", and collectively with AllDale I, "AllDale I & II") (the "Acquisition Gain").  The Acquisition Gain was recognized to step up to fair value the financial reporting basis of the interests we already owned at the time of acquisition. The tax basis of the underlying properties of AllDale I & II did not include the Acquisition Gain.

​

Reconciliations of income taxes at the U.S. federal statutory tax rate to income taxes at our effective tax rate are as follows:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

 

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Income taxes at statutory rate

​

$

36,030

​

$

12,171

​

$

88,066

​

$

26,658

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Less: Income taxes at statutory rate on Partnership income not subject to income taxes

​

 

(29,888)

​

 

(11,777)

​

 

(71,562)

​

 

(25,935)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Increase (decrease) resulting from:

​

​

​

​

​

​

​

​

​

​

​

​

​

State taxes, net of federal income tax

​

 

426

​

 

66

​

 

1,244

​

 

138

​

Change in valuation allowance of deferred tax assets

​

 

9

​

 

(361)

​

 

10

​

 

(666)

​

Deferred taxes related to tax election

​

​

—

​

​

—

​

​

37,253

​

​

—

​

Other

​

 

23

​

 

135

​

 

635

​

 

32

​

Income tax expense

​

$

6,600

​

$

234

​

$

55,646

​

$

227

​

​

The effective income tax rate for our income tax expense for the three and nine months ended September 30, 2022 is less than the federal statutory rate, primarily due to the portion of income not subject to income taxes, partially offset by the effect of the Tax Election previously discussed. The effective income tax rate for our income tax expense for the three and nine months ended September 30, 2021 is less than the federal statutory rate, primarily due to the portion of income not subject to income taxes.

​

Significant components of deferred tax liabilities and deferred tax assets are as follows:

​

​

​

​

​

​

​

​

​

​

​

September 30, 

​

December 31, 

 

​

    

2022

    

2021

 

​

​

(in thousands)

​

Deferred tax liabilities:

​

​

​

​

​

​

​

Property, plant and equipment

​

$

(38,770)

​

$

(2,169)

​

Total deferred tax liabilities

​

​

(38,770)

​

​

(2,169)

​

​

​

​

​

​

​

​

​

Deferred tax assets:

​

​

​

​

​

​

​

Federal loss carryovers and credits

​

​

734

​

​

1,328

​

Other

​

 

764

​

 

808

​

Total deferred tax assets

​

​

1,498

​

​

2,136

​

Less valuation allowance

​

​

(327)

​

​

(317)

​

Net deferred tax assets

​

​

1,171

​

​

1,819

​

​

​

​

​

​

​

​

​

Overall net deferred tax liabilities

​

$

(37,599)

​

$

(350)

​

​

The change in deferred tax liabilities for property, plant and equipment is primarily as a result of the Alliance Minerals' Tax Election and associated impact of the Acquisition Gain discussed above.  

​

Federal loss carryovers and credits are primarily due to net operating losses and research and development credits associated with the operations of other subsidiaries that are taxable for federal income tax purposes.  

​

The valuation allowance as of September 30, 2022 and 2021 serves to reduce the available deferred tax assets to amounts that will, more likely than not, be realized.  We considered all available positive and negative evidence, which incorporates available tax planning strategies and our estimate of future reversals of existing temporary differences, and have determined that a portion of our deferred tax assets relating to state losses and credits may not be realized.

​

Our 2019 through 2021 tax years remain open to examination by tax authorities. We have been notified by the Internal Revenue Service that lower-tier partnership income tax returns for the tax year ended December 31, 2020 have been selected for audit.
v3.22.2.2
VARIABLE INTEREST ENTITIES
 9 Months Ended
Sep. 30, 2022
VARIABLE INTEREST ENTITIES  
VARIABLE INTEREST ENTITIES

9.VARIABLE INTEREST ENTITIES

​

Cavalier Minerals

​

On November 10, 2014, our subsidiary, Alliance Minerals, and Bluegrass Minerals Management, LLC ("Bluegrass Minerals") entered into a limited liability company agreement (the "Cavalier Agreement") to create Cavalier Minerals JV, LLC ("Cavalier Minerals"), which was formed to indirectly acquire oil & gas mineral interests through its ownership in AllDale I & II.  Alliance Minerals owns a 96% member interest in Cavalier Minerals, and Bluegrass Minerals owns a 4% member interest in Cavalier Minerals and a profits interest which entitles it to receive distributions equal to 25% of all distributions (including in liquidation) after all members have recovered their investment.  Distributions with respect to Bluegrass Minerals' profits interest will be offset by all distributions received by Bluegrass Minerals from the former general partners of AllDale I & II.  To date, there has been no profits interest distribution.  We hold the managing member interest in Cavalier Minerals.  Total contributions to and cumulative distributions from Cavalier Minerals are as follows:  

​

​

​

​

​

​

​

​

​

​

​

Alliance

​

Bluegrass

​

​

​

Minerals

​

Minerals

​

​

​

(in thousands)

​

Contributions

​

$

143,112

​

$

5,963

​

Distributions

​

​

136,597

​

​

5,691

​

​

We have concluded that Cavalier Minerals is a variable interest entity ("VIE") which we consolidate as the primary beneficiary because we are the managing member and a substantial equity owner in Cavalier Minerals.  Bluegrass Minerals' equity ownership of Cavalier Minerals is accounted for as noncontrolling ownership interest in our condensed consolidated balance sheets.  In addition, earnings attributable to Bluegrass Minerals are recognized as noncontrolling interest in our condensed consolidated statements of income.

​

AllDale III

​

In February 2017, Alliance Minerals committed to directly invest $30.0 million in AllDale Minerals III, LP ("AllDale III") which was created for similar investment purposes as AllDale I & II.  Alliance Minerals completed funding of this commitment in 2018. Alliance Minerals' limited partner interest in AllDale III is 13.9%.

​

The AllDale III Partnership Agreement includes a 25% profits interest for the general partner, subject to a return hurdle equal to the greater of 125% of cumulative capital contributions and a 10% internal rate of return, and following an 80/20 "catch-up" provision for the general partner.  

​

Since AllDale III is structured as a limited partnership with the limited partners (i) not having the ability to remove the general partner and (ii) not participating significantly in the operational decisions, we concluded that AllDale III is a VIE.  We are not the primary beneficiary of AllDale III as we do not have the power to direct the activities that most significantly impact AllDale III's economic performance.  We account for our ownership interest in the income or loss of AllDale III as an equity method investment.  We record equity income or loss based on AllDale III's distribution structure. See Note 10 – Investments for more information.

​

Francis

​

On April 5, 2022, we committed to invest up to $50 million in Francis through the purchase of preferred equity interests. We funded $20 million on April 5, 2022, in the form of a convertible note with a maturity date of April 1, 2023. As of September 30, 2022, we have elected to hold our commitment to Francis at our initial $20 million convertible note investment. Our convertible note represents an ownership interest in Francis upon conversion.  We have determined the note more closely represents equity as opposed to debt. Therefore, we will account for the convertible note as an equity contribution even though we will not participate in Francis' earnings or losses and will not be eligible to receive distributions until the note converts.

​

We have concluded that Francis is a VIE as the management structure is similar to a limited partnership with the non-managing members (i) not having the ability to remove the managing member and (ii) not participating significantly

in the operational decisions.  We are not the primary beneficiary of Francis as we do not have the power to direct the activities that most significantly impact Francis's economic performance. We account for our ownership interest in the income or loss of Francis as an equity method investment. We record equity income or loss based on Francis' distribution structure. See Note 10 – Investments for more information.

​

NGP ETP IV

​

On June 2, 2022, we committed to purchase $25.0 million of limited partner interests in NGP ETP IV, a private equity fund sponsored by NGP and focused on investments that are part of the global transition toward a lower carbon economy. We funded $0.2 million during the nine months ended September 30, 2022.  Our final ownership percentage in NGP ETP IV is not yet known.

​

We have concluded that NGP ETP IV is a VIE as it is structured as a limited partnership with limited partners (i) not having the ability to remove the general partner and (ii) not participating significantly in the operational decisions. We are not the primary beneficiary of NGP ETP IV as we do not have the power to direct the activities that most significantly impact NGP ETP IV's economic performance.  We account for our ownership interest in the income or loss of NGP ETP IV as an equity method investment. See Note 10 – Investments for more information.
v3.22.2.2
INVESTMENTS
 9 Months Ended
Sep. 30, 2022
INVESTMENTS  
INVESTMENTS

10.INVESTMENTS

​

AllDale III

​

As discussed in Note 9 – Variable Interest Entities, we account for our ownership interest in the income or loss of AllDale III as an equity method investment.  The changes in our equity method investment in AllDale III for each of the periods presented were as follows:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

26,278

​

$

26,274

​

$

26,325

​

$

27,268

​

Equity method investment income

​

​

2,108

​

​

703

​

​

4,576

​

​

1,106

​

Distributions received

​

​

(2,448)

​

​

(797)

​

​

(4,963)

​

​

(2,194)

​

Ending balance

​

$

25,938

​

$

26,180

​

$

25,938

​

$

26,180

​

​

Francis

​

As discussed in Note 9 – Variable Interest Entities, we accounted for our ownership interest in the income or loss of Francis as an equity method investment. The changes in our equity method investment in Francis for the three and nine months ended September 30, 2022 were as follows:

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2022

    

​

​

(in thousands)

​

Beginning balance

​

$

20,000

​

$

—

​

Contributions

​

​

—

​

​

20,000

​

Ending balance

​

$

20,000

​

$

20,000

​

​

NGP ETP IV

​

As discussed in Note 9 – Variable Interest Entities, we account for our ownership interest in the income or loss of NGP ETP IV as an equity method investment. The changes in our equity method investment in NGP ETP IV for three and nine months ended September 30, 2022 were as follows:

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2022

​

​

​

(in thousands)

​

Beginning balance

​

$

110

​

$

—

​

Contributions

​

​

110

​

​

220

​

Ending balance

​

$

220

​

$

220

​

​

Infinitum

​

On April 29, 2022, we purchased $32.6 million of Series D Preferred Stock from Infinitum, a Texas-based startup developer and manufacturer of electric motors featuring printed circuit board stators.  The preferred stock provides for non-cumulative dividends when and if declared by Infinitum's board of directors. Each share is convertible, at any time, at our option, into shares of common stock of Infinitum. We account for our ownership interest in Infinitum as an equity investment without a readily determinable fair value.  It is not practicable to estimate the fair value of our investment in Infinitum because of the lack of a quoted market price for our ownership interests.  Therefore, we use a measurement alternative other than fair value to account for our investment. There have been no fair value adjustments in our investment in Infinitum subsequent to our purchase.  During the period we have not observed any price changes that have occurred to identical or similar securities sold by Infinitum that would indicate an adjustment to the fair value of our investment is warranted.

​

As discussed in Note 1 – Organization and Presentation, on November 2, 2022, we purchased an additional $9.4 million of Series D Preferred Stock in Infinitum.  The stock was purchased at the same price per share as those shares of Series D Preferred Stock that we acquired on April 29, 2022.  
v3.22.2.2
PARTNERS' CAPITAL
 9 Months Ended
Sep. 30, 2022
PARTNERS' CAPITAL  
PARTNERS' CAPITAL

11.PARTNERS' CAPITAL

​

Distributions

​

Distributions paid or declared during 2021 and 2022 were as follows:

​

​

​

​

​

​

​

​

​

Payment Date

    

Per Unit Cash Distribution

 

Total Cash Distribution

 

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

May 14, 2021

​

$

0.1000

​

$

13,045

​

August 13, 2021

​

​

0.1000

​

​

13,041

​

November 12, 2021

​

​

0.2000

​

​

26,072

​

Total

​

$

0.4000

​

$

52,158

​

​

​

​

​

​

​

​

​

February 14, 2022

​

$

0.2500

​

$

32,750

​

May 13, 2022

​

​

0.3500

​

​

45,810

​

August 12, 2022

​

​

0.4000

​

​

52,338

​

November 14, 2022 (1)

​

​

0.5000

​

​

—

​

Total

​

$

1.5000

​

$

130,898

​

(1)On October 28, 2022, we declared this quarterly distribution payable on November 14, 2022 to all unitholders of record as of November 7, 2022.  

​

Unit Repurchase Program

​

In May 2018, the MGP board of directors approved the establishment of a unit repurchase program authorizing us to repurchase and retire up to $100 million of ARLP common units.  The program has no time limit and we may repurchase units from time to time in the open market or in other privately negotiated transactions. The unit repurchase program authorization does not obligate us to repurchase any dollar amount or number of units.  No unit repurchases were made during the nine months ended September 30, 2022.  Since inception of the unit repurchase program, we have repurchased and retired 5,460,639 units at an average unit price of $17.12 for an aggregate purchase price of $93.5 million. The remaining authorized amount for unit repurchases under this program is $6.5 million.

​

Change in Partners' Capital

​

The following tables present the quarterly change in Partners' Capital for the nine months ended September 30, 2022 and 2021:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Accumulated

​

​

​

​

​

​

​

​

​

Number of

​

Limited 

​

Other

​

​

​

​

​

​

​

​

​

Limited Partner

​

Partners'

​

Comprehensive

​

Noncontrolling

​

Total Partners'

​

​

    

Units

    

Capital

    

Income (Loss)

    

Interest

    

 Capital

 

​

​

(in thousands, except unit data)

​

Balance at January 1, 2022

 

127,195,219

​

$

1,279,183

​

$

(64,229)

​

$

11,115

​

$

1,226,069

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

36,652

​

 

—

​

​

290

 

 

36,942

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

790

​

 

—

 

 

790

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

37,732

​

Common unit-based compensation

 

—

​

 

2,640

​

​

—

​

​

—

​

​

2,640

​

Distributions on deferred common unit-based compensation

 

—

​

 

(950)

​

​

—

​

​

—

​

​

(950)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(298)

​

​

(298)

​

Distributions to Partners

 

—

​

​

(31,800)

​

​

—

​

​

—

​

​

(31,800)

​

Balance at March 31, 2022

​

127,195,219

​

​

1,285,725

​

​

(63,439)

​

​

11,107

​

​

1,233,393

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

161,478

​

 

—

​

​

323

 

 

161,801

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

794

​

 

—

 

 

794

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

162,595

​

Common unit-based compensation

 

—

​

 

2,340

​

​

—

​

​

—

​

​

2,340

​

Distributions on deferred common unit-based compensation

 

—

​

 

(1,292)

​

​

—

​

​

—

​

​

(1,292)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(325)

​

​

(325)

​

Distributions to Partners

 

—

​

​

(44,518)

​

​

—

​

​

—

​

​

(44,518)

​

Balance at June 30, 2022

​

127,195,219

​

$

1,403,733

​

$

(62,645)

​

$

11,105

​

$

1,352,193

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

164,607

​

 

—

​

​

364

 

 

164,971

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

802

​

 

—

 

 

802

​

Total comprehensive income

 

—

​

​

—

​

​

—

​

​

—

 

​

165,773

​

Common unit-based compensation

 

—

​

 

2,677

​

​

—

​

​

—

​

​

2,677

​

Distributions on deferred common unit-based compensation

 

—

​

 

(1,461)

​

​

—

​

​

—

​

​

(1,461)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(485)

​

​

(485)

​

Distributions to Partners

 

—

​

​

(50,877)

​

​

—

​

​

—

​

​

(50,877)

​

Balance at September 30, 2022

 

127,195,219

​

$

1,518,679

​

$

(61,843)

​

$

10,984

​

$

1,467,820

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Accumulated

​

​

​

​

​

​

​

​

​

Number of

​

Limited 

​

Other

​

​

​

​

​

​

​

​

​

Limited Partner

​

Partners'

​

Comprehensive

​

Noncontrolling

​

Total Partners'

​

​

    

Units

    

Capital

    

Income (Loss)

    

Interest

    

 Capital

 

​

​

(in thousands, except unit data)

​

Balance at January 1, 2021

 

127,195,219

​

$

1,148,565

​

$

(87,674)

​

$

11,376

​

$

1,072,267

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

24,748

​

 

—

​

​

78

 

 

24,826

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

2,231

​

 

—

 

 

2,231

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

27,057

​

Common unit-based compensation

 

—

​

 

723

​

​

—

​

​

—

​

​

723

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(141)

​

​

(141)

​

Balance at March 31, 2021

 

127,195,219

​

​

1,174,036

​

​

(85,443)

​

​

11,313

​

​

1,099,906

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

44,035

​

 

—

​

​

130

 

 

44,165

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

2,231

​

 

—

 

 

2,231

​

Total comprehensive loss

 

​

​

​

​

​

​

​

​

​

​

 

​

46,396

​

Common unit-based compensation

 

—

​

 

1,485

​

​

—

​

​

—

​

​

1,485

​

Distributions on deferred common unit-based compensation

 

—

​

 

(324)

​

​

—

​

​

—

​

​

(324)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(222)

​

​

(222)

​

Distributions to Partners

 

—

​

​

(12,721)

​

​

—

​

​

—

​

​

(12,721)

​

Balance at June 30, 2021

 

127,195,219

​

​

1,206,511

​

​

(83,212)

​

​

11,221

​

​

1,134,520

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

57,548

​

 

—

​

​

176

 

 

57,724

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

2,231

​

 

—

 

 

2,231

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

59,955

​

Settlement of deferred compensation plans

​

​

​

​

(1,090)

​

​

—

​

​

—

​

​

(1,090)

​

Common unit-based compensation

 

—

​

 

1,746

​

​

—

​

​

—

​

​

1,746

​

Distributions on deferred common unit-based compensation

 

—

​

 

(323)

​

​

—

​

​

—

​

​

(323)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(252)

​

​

(252)

​

Distributions to Partners

 

—

​

​

(12,718)

​

​

—

​

​

—

​

​

(12,718)

​

Balance at September 30, 2021

 

127,195,219

​

$

1,251,674

​

$

(80,981)

​

$

11,145

​

$

1,181,838

​

​
v3.22.2.2
REVENUE FROM CONTRACTS WITH CUSTOMERS
 9 Months Ended
Sep. 30, 2022
REVENUE FROM CONTRACTS WITH CUSTOMERS  
REVENUE FROM CONTRACTS WITH CUSTOMERS

12.REVENUE FROM CONTRACTS WITH CUSTOMERS

​

The following table illustrates the disaggregation of our revenues by type, including a reconciliation to our segment presentation as presented in Note 17 – Segment Information.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Coal Operations

​

Royalties

​

Other,

​

​

​

​

​

​

Illinois

    

​

    

​

​

​

    

Corporate and

    

​

​

​

​

    

Basin

    

Appalachia

    

Oil & Gas

    

Coal

    

Elimination

    

Consolidated

​

​

​

(in thousands)

​

Three Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

314,271

​

$

236,292

​

$

—

​

$

—

​

$

—

​

$

550,563

​

Oil & gas royalties

​

​

—

​

​

—

​

​

35,312

​

​

—

​

​

—

​

​

35,312

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

16,708

​

​

(16,708)

​

​

—

​

Transportation revenues

​

​

19,508

​

​

9,040

​

​

—

​

​

—

​

​

—

​

​

28,548

​

Other revenues

​

​

1,455

​

​

392

​

​

2,260

​

​

—

​

​

9,890

​

​

13,997

​

Total revenues

​

$

335,234

​

$

245,724

​

$

37,572

​

$

16,708

​

$

(6,818)

​

$

628,420

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended September 30, 2021

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

217,637

​

$

144,627

​

$

—

​

$

—

​

$

—

​

$

362,264

​

Oil & gas royalties

​

​

—

​

​

—

​

​

20,109

​

​

—

​

​

—

​

​

20,109

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

13,456

​

​

(13,456)

​

​

—

​

Transportation revenues

​

​

12,121

​

​

9,906

​

​

—

​

​

—

​

​

—

​

​

22,027

​

Other revenues

​

​

1,335

​

​

411

​

​

1,082

​

​

—

​

​

8,211

​

​

11,039

​

Total revenues

​

$

231,093

​

$

154,944

​

$

21,191

​

$

13,456

​

$

(5,245)

​

$

415,439

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

858,565

​

$

612,165

​

$

—

​

$

—

​

$

—

​

$

1,470,730

​

Oil & gas royalties

​

​

—

​

​

—

​

​

102,166

​

​

—

​

​

—

​

​

102,166

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

46,400

​

​

(46,400)

​

​

—

​

Transportation revenues

​

​

59,848

​

​

33,457

​

​

—

​

​

—

​

​

—

​

​

93,305

​

Other revenues

​

​

5,014

​

​

1,083

​

​

2,946

​

​

—

​

​

30,540

​

​

39,583

​

Total revenues

​

$

923,427

​

$

646,705

​

$

105,112

​

$

46,400

​

$

(15,860)

​

$

1,705,784

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

610,435

​

$

365,290

​

$

—

​

$

—

​

$

—

​

$

975,725

​

Oil & gas royalties

​

​

—

​

​

—

​

​

51,222

​

​

—

​

​

—

​

​

51,222

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

36,410

​

​

(36,410)

​

​

—

​

Transportation revenues

​

​

27,235

​

​

17,918

​

​

—

​

​

—

​

​

—

​

​

45,153

​

Other revenues

​

​

2,590

​

​

1,078

​

​

1,576

​

​

—

​

​

19,160

​

​

24,404

​

Total revenues

​

$

640,260

​

$

384,286

​

$

52,798

​

$

36,410

​

$

(17,250)

​

$

1,096,504

​

​

The following table illustrates the amount of our transaction price for all current coal supply contracts allocated to performance obligations that are unsatisfied or partially unsatisfied as of September 30, 2022 and disaggregated by segment and contract duration.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

2025 and

​

​

​

    

2022

    

2023

    

2024

    

Thereafter

    

Total

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Illinois Basin Coal Operations coal revenues

​

$

380,626

​

$

853,006

​

$

489,615

​

$

480,298

​

$

2,203,545

Appalachia Coal Operations coal revenues

​

​

298,080

​

​

372,353

​

​

310,436

​

​

156,700

​

​

1,137,569

Total coal revenues (1)

​

$

678,706

​

$

1,225,359

​

$

800,051

​

$

636,998

​

$

3,341,114

(1) Coal revenues generally consists of consolidated revenues excluding our Oil & Gas Royalties segment as well as intercompany revenues from our Coal Royalties segment.

v3.22.2.2
EARNINGS PER LIMITED PARTNER UNIT
 9 Months Ended
Sep. 30, 2022
EARNINGS PER LIMITED PARTNER UNIT  
EARNINGS PER LIMITED PARTNER UNIT

13.EARNINGS PER LIMITED PARTNER UNIT

​

We utilize the two-class method in calculating basic and diluted earnings per limited partner unit ("EPU").  Net income attributable to ARLP is allocated to limited partners and participating securities under deferred compensation plans, which include rights to nonforfeitable distributions or distribution equivalents.  Net losses attributable to ARLP are allocated to limited partners but not to participating securities.  Our participating securities are outstanding restricted unit awards under our Long-Term Incentive Plan ("LTIP") and phantom units in notional accounts under our Supplemental Executive Retirement Plan ("SERP") and the MGP Amended and Restated Deferred Compensation Plan for Directors ("Directors' Deferred Compensation Plan").

​

The following is a reconciliation of net income attributable to ARLP used for calculating basic and diluted earnings per unit and the weighted-average units used in computing EPU for the three and nine months ended September 30, 2022 and 2021:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

    

​

​

(in thousands, except per unit data)

​

Net income attributable to ARLP

​

$

164,607

​

$

57,548

​

$

362,737

​

$

126,331

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Less:

​

​

​

​

​

​

​

​

​

​

​

​

​

Distributions to participating securities

​

 

(2,180)

​

 

(765)

​

 

(5,452)

​

 

(1,384)

​

Undistributed earnings attributable to participating securities

​

 

(3,275)

​

 

(951)

​

 

(6,504)

​

 

(1,832)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income attributable to ARLP available to limited partners

​

$

159,152

​

$

55,832

​

$

350,781

​

$

123,115

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Weighted-average limited partner units outstanding – basic and diluted

​

 

127,195

​

 

127,195

​

 

127,195

​

 

127,195

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Earnings per limited partner unit - basic and diluted (1)

​

$

1.25

​

$

0.44

​

$

2.76

​

$

0.97

​

(1)Diluted EPU gives effect to all potentially dilutive common units outstanding during the period using the treasury stock method. Diluted EPU excludes all potentially dilutive units calculated under the treasury stock method if their effect is anti-dilutive.  The combined total of LTIP, SERP and Directors' Deferred Compensation Plan units of 3,754 and 3,431 for the three and nine months ended September 30, 2022, respectively, and 2,328 and 1,706 for the three and nine months ended September 30, 2021, respectively, were considered anti-dilutive under the treasury stock method.
v3.22.2.2
WORKERS' COMPENSATION AND PNEUMOCONIOSIS
 9 Months Ended
Sep. 30, 2022
WORKERS' COMPENSATION AND PNEUMOCONIOSIS  
WORKERS' COMPENSATION AND PNEUMOCONIOSIS

14.WORKERS' COMPENSATION AND PNEUMOCONIOSIS

​

The changes in the workers' compensation liability, including current and long-term liability balances, for each of the periods presented were as follows:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

 

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

47,221

​

$

52,059

​

$

53,448

​

$

54,739

​

Accruals increase

​

 

2,918

​

 

1,674

​

 

7,464

​

 

4,911

​

Payments

​

 

(2,856)

​

 

(2,939)

​

 

(8,938)

​

 

(7,914)

​

Interest accretion

​

 

287

​

 

232

​

 

861

​

 

695

​

Valuation gain (1)

​

 

—

​

 

—

​

 

(5,265)

​

 

(1,405)

​

Ending balance

​

$

47,570

​

$

51,026

​

$

47,570

​

$

51,026

​

(1)Our estimate of the liability for the present value of current workers′ compensation benefits is based on our actuarial calculations.  Our actuarial calculations are based on a blend of actuarial projection methods and numerous assumptions including claims development patterns, mortality, medical costs and interest rates.  The valuation gain in 2022 is due to an increase in the discount rate from 2.41% on December 31, 2021 to 4.22% on June 30, 2022.  The valuation gain in 2021 is due to an increase in the discount rate from 1.95% on December 31, 2020 to 2.34% on June 30, 2021.

​

We limit our exposure to traumatic injury claims by purchasing a high deductible insurance policy that starts paying benefits after deductibles for a claim have been met.  The deductible level may vary by claim year.  Our workers' compensation liability above is presented on a gross basis and does not include our expected receivables on our insurance policy.  Our receivables for traumatic injury claims under this policy as of September 30, 2022 are $5.7 million and are included in Other long-term assets on our condensed consolidated balance sheet.

​

Certain of our mine operating entities are liable under state statutes and the Federal Coal Mine Health and Safety Act of 1969, as amended, to pay pneumoconiosis, or black lung, benefits to eligible employees and former employees and their dependents.  Components of the net periodic benefit cost for each of the periods presented are as follows:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Service cost

​

$

949

​

$

1,007

​

$

2,850

​

$

3,027

 

Interest cost (1)

​

 

747

​

 

636

​

 

2,243

​

 

1,909

​

Net amortization (1)

​

 

260

​

 

1,043

​

 

779

​

 

3,129

​

Net periodic benefit cost

​

$

1,956

​

$

2,686

​

$

5,872

​

$

8,065

​

(1)Interest cost and net amortization are included in the Other income (expense) line item within our condensed consolidated statements of income.
v3.22.2.2
COMMON UNIT-BASED COMPENSATION PLANS
 9 Months Ended
Sep. 30, 2022
COMMON UNIT-BASED COMPENSATION PLANS  
COMMON UNIT-BASED COMPENSATION PLANS

15.COMMON UNIT-BASED COMPENSATION PLANS

​

Long-Term Incentive Plan

​

We maintain the LTIP for certain employees and officers of MGP and its affiliates who perform services for us.  As part of our LTIP, unit awards of non-vested "phantom" or notional units, also referred to as "restricted units", may be granted which upon satisfaction of time and performance-based vesting requirements, entitle the LTIP participant to receive ARLP common units.  Certain awards may also contain a minimum-value guarantee payable in ARLP common units or cash that would be paid regardless of whether or not the awards vest, as long as service requirements are met.  Annual grant levels, vesting provisions and minimum-value guarantees of restricted units for designated participants are recommended by Mr. Craft, subject to review and approval of the compensation committee of the MGP board of directors

(the "Compensation Committee").  Vesting of all restricted units outstanding is subject to the satisfaction of certain financial tests. If it is not probable the financial tests for a particular grant of restricted units will be met, any previously expensed amounts for that grant are reversed and no future expense will be recognized for that grant.  Assuming the financial tests are met, grants of restricted units issued to LTIP participants are generally expected to cliff vest on January 1st of the third year following issuance of the grants.  We expect to settle restricted unit grants by delivery of newly-issued ARLP common units, except for the portion of the grants that will satisfy employee tax withholding obligations of LTIP participants.  We account for forfeitures of non-vested LTIP restricted unit grants as they occur.  As provided under the distribution equivalent rights ("DERs") provisions of the LTIP and the terms of the LTIP restricted unit awards, all non-vested restricted units include contingent rights to receive quarterly distributions in cash or, at the discretion of the Compensation Committee, phantom units in lieu of cash credited to a bookkeeping account with value equal to the cash distributions we make to unitholders during the vesting period. If it is not probable the financial tests for a particular grant of restricted units will be met, any previously paid DER amounts for that grant are reversed from Partners' Capital and recorded as compensation expense and future DERs for that grant, if any, will be recognized as compensation expense when paid.  

​

A summary of non-vested LTIP grants as of and for the nine months ended September 30, 2022 is as follows:

​

​

​

​

​

​

​

​

​

​

​

​

    

Number of units

 

Weighted average grant date fair value per unit

 

Intrinsic value

 

​

​

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

​

Non-vested grants at January 1, 2022

​

3,130,475

​

$

5.59

​

$

39,569

​

Granted (1)

 

769,907

​

​

14.65

​

​

​

​

Forfeited

 

(200,119)

​

 

6.96

​

​

​

​

Non-vested grants at September 30, 2022

 

3,700,263

​

 

7.40

​

​

84,736

​

(1)The restricted units granted during 2022 have certain minimum-value guarantees per unit, regardless of whether or not the awards vest.

​

LTIP expense for grants of restricted units was $2.4 million and $1.7 million for the three months ended September 30, 2022 and 2021, respectively, and $6.8 million and $3.8 million for the nine months ended September 30, 2022 and 2021, respectively.  The total obligation associated with LTIP grants of restricted units as of September 30, 2022 was $13.4 million and is included in the partners' capital Limited partners-common unitholders line item in our condensed consolidated balance sheets.  As of September 30, 2022, there was $14.0 million in total unrecognized compensation expense related to the non-vested LTIP restricted unit grants that are expected to vest.  That expense is expected to be recognized over a weighted-average period of 1.1 years.

​

Supplemental Executive Retirement Plan and Directors' Deferred Compensation Plan

​

We utilize the SERP to provide deferred compensation benefits for certain officers and key employees. All allocations made to participants under the SERP are made in the form of "phantom" ARLP units and SERP distributions will be settled in the form of ARLP common units.  The SERP is administered by the Compensation Committee.  

​

Our directors participate in the Directors' Deferred Compensation Plan. Pursuant to the Directors' Deferred Compensation Plan, for amounts deferred either automatically or at the election of the director, a notional account is established and credited with notional common units of ARLP, described in the Directors' Deferred Compensation Plan as "phantom" units.  Distributions from the Directors' Deferred Compensation Plan will be settled in the form of ARLP common units.

​

For both the SERP and Directors' Deferred Compensation Plan, when quarterly cash distributions are made with respect to ARLP common units, an amount equal to such quarterly distribution is credited to each participant's notional account as additional phantom units.  All grants of phantom units under the SERP and Directors' Deferred Compensation Plan vest immediately.

​

A summary of SERP and Directors' Deferred Compensation Plan activity as of and for the nine months ended September 30, 2022 is as follows:

​

​

​

​

​

​

​

​

​

​

​

​

    

Number of units

 

Weighted average grant date fair value per unit

 

Intrinsic value

 

​

​

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

​

Phantom units outstanding as of January 1, 2022

​

668,698

​

$

20.37

​

$

8,452

​

Granted

​

37,758

​

​

18.25

​

​

​

​

Phantom units outstanding as of September 30, 2022

 

706,456

​

 

20.26

​

​

16,178

​

​

Total SERP and Directors' Deferred Compensation Plan expense was $0.4 million and $0.1 million for the three months ended September 30, 2022 and 2021, respectively, and $0.9 million and $0.3 million for the nine months ended September 30, 2022 and 2021, respectively.  As of September 30, 2022, the total obligation associated with the SERP and Directors' Deferred Compensation Plan was $14.3 million and is included in the partners' capital Limited partners-common unitholders line item in our condensed consolidated balance sheets.
v3.22.2.2
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS
 9 Months Ended
Sep. 30, 2022
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS  
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS

16.COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS

​

Eligible employees at certain of our mining operations participate in a defined benefit plan (the "Pension Plan") that we sponsor.  The Pension Plan is currently closed to new applicants and participants in the Pension Plan are no longer receiving benefit accruals for service.  The benefit formula for the Pension Plan is a fixed dollar unit based on years of service.  Components of the net periodic benefit cost for each of the periods presented are as follows:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

    

​

​

(in thousands)

​

Interest cost

​

$

940

​

$

860

​

$

2,808

​

$

2,580

​

Expected return on plan assets

​

 

(1,654)

​

 

(1,671)

​

 

(4,983)

​

 

(5,013)

​

Amortization of prior service cost

​

​

47

​

​

47

​

​

140

​

​

140

​

Amortization of net loss

​

 

495

​

 

1,141

​

 

1,467

​

 

3,424

​

Net periodic benefit cost (1)

​

$

(172)

​

$

377

​

$

(568)

​

$

1,131

​

(1)Net periodic benefit cost for the Pension Plan is included in the Other income (expense) line item within our condensed consolidated statements of income.

​

As a result of certain pension plan contribution relief provided by the American Rescue Plan Act enacted in March 2021, we do not expect to make contributions to the Pension Plan during 2022.
v3.22.2.2
SEGMENT INFORMATION
 9 Months Ended
Sep. 30, 2022
SEGMENT INFORMATION  
SEGMENT INFORMATION

17.SEGMENT INFORMATION

​

We operate in the United States as a diversified natural resource company that generates operating and royalty income from the production and marketing of coal to major domestic and international utilities and industrial users as well as royalty income from oil & gas mineral interests.  We aggregate multiple operating segments into four reportable segments, Illinois Basin Coal Operations, Appalachia Coal Operations, Oil & Gas Royalties and Coal Royalties.  We also have an "all other" category referred to as Other, Corporate and Elimination.  Our two coal operations reportable segments correspond to major coal producing regions in the eastern United States with similar economic characteristics including coal quality, geology, coal marketing opportunities, mining and transportation methods and regulatory issues.  The two coal operations reportable segments include seven mining complexes operating in Illinois, Indiana, Kentucky, Maryland, Pennsylvania and West Virginia and a coal-loading terminal in Indiana on the Ohio River.  Our Oil & Gas Royalties reportable segment includes our oil & gas mineral interests which are located primarily in the Permian (Delaware and Midland), Anadarko (SCOOP/STACK) and Williston (Bakken) basins.  The operations within our Oil & Gas Royalties reportable segment primarily include receiving royalties and lease bonuses for our oil & gas mineral interests. Our Coal Royalties reportable segment includes coal mineral reserves and resources owned or leased by Alliance Resource Properties, which are either (a) leased to our mining complexes or (b) near our coal mining operations but not yet leased.

​

The Illinois Basin Coal Operations reportable segment includes operating mining complexes (a) the Gibson County Coal, LLC mining complex, (b) the Warrior Coal, LLC mining complex, (c) the River View Coal, LLC mining complex and (d) the Hamilton County Coal, LLC mining complex. The segment also includes our Mt. Vernon Transfer Terminal, LLC coal-loading terminal in Indiana which operates on the Ohio River, Mid-America Carbonates, LLC and other support services, and our non-operating Illinois Basin mining complexes.    

​

The Appalachia Coal Operations reportable segment includes operating mining complexes (a) the Mettiki mining complex, (b) the Tunnel Ridge, LLC mining complex and (c) the MC Mining, LLC mining complex.

​

The Oil & Gas Royalties reportable segment includes oil & gas mineral interests held by AR Midland, LP ("AR Midland") and AllDale I & II and includes Alliance Minerals' equity interests in both AllDale III (Note 10 – Investments) and Cavalier Minerals.

​

The Coal Royalties reportable segment includes coal mineral reserves and resources owned or leased by Alliance Resource Properties that are (a) leased to certain of our mining complexes in both the Illinois Basin Coal Operations and Appalachia Coal Operations reportable segments or (b) located near our operations and external mining operations.  Approximately two thirds of the coal sold by our Coal Operations' mines is leased from our Coal Royalties entities.

​

Other, Corporate and Elimination includes marketing and administrative activities, Matrix Design Group, LLC, its subsidiaries, and Alliance Design Group, LLC (collectively referred to as the "Matrix Group"), our investments in Francis, Infinitum and NGP ETP IV (see Note 10 – Investments), Wildcat Insurance, LLC, which assists the ARLP Partnership with its insurance requirements, AROP Funding and Alliance Finance (both discussed in Note 7 – Long-Term Debt), Pontiki Coal, LLC's workers' compensation and pneumoconiosis liabilities and other miscellaneous activities.  The eliminations included in Other, Corporate and Elimination primarily represent the intercompany coal royalty transactions described above between our Coal Royalties reportable segment and our coal operations' mines.

​

Reportable segment results are presented below.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Coal Operations

​

Royalties

​

Other,

​

​

​

 

​

​

Illinois

    

​

    

​

​

​

​

Corporate and

    

​

​

​

​

    

Basin

    

Appalachia

    

Oil & Gas

    

Coal

​

Elimination

    

Consolidated

 

​

​

(in thousands)

 

Three Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

335,234

​

$

245,724

​

$

37,572

​

$

—

​

$

9,890

​

$

628,420

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

16,708

​

​

(16,708)

​

​

—

​

Total revenues (1)

​

​

335,234

​

​

245,724

​

​

37,572

​

​

16,708

​

​

(6,818)

​

​

628,420

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

194,967

​

 

134,672

​

 

3,531

​

 

5,545

​

 

(8,609)

​

 

330,106

​

Segment Adjusted EBITDA (3)

​

 

120,760

​

 

102,012

​

 

35,783

​

 

11,163

​

 

1,792

​

 

271,510

​

Capital expenditures

​

 

39,529

​

 

17,780

​

 

—

​

 

40,033

​

 

1,962

​

 

99,304

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended September 30, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

231,093

​

$

154,944

​

$

21,191

​

$

—

​

$

8,211

​

$

415,439

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

13,456

​

​

(13,456)

​

​

—

​

Total revenues (1)

​

​

231,093

​

​

154,944

​

​

21,191

​

​

13,456

​

​

(5,245)

​

​

415,439

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

149,666

​

 

92,312

​

 

2,639

​

 

4,258

​

 

(9,525)

​

 

239,350

​

Segment Adjusted EBITDA (3)

​

 

69,305

​

 

52,726

​

 

19,080

​

 

9,198

​

 

4,280

​

 

154,589

​

Capital expenditures

​

 

19,081

​

 

12,531

​

 

—

​

 

30

​

 

1,393

​

 

33,035

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

923,427

​

$

646,705

​

$

105,112

​

$

—

​

$

30,540

​

$

1,705,784

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

46,400

​

​

(46,400)

​

​

—

​

Total revenues (1)

​

​

923,427

​

​

646,705

​

​

105,112

​

​

46,400

​

​

(15,860)

​

​

1,705,784

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

567,253

​

​

335,756

​

​

9,766

​

​

15,762

​

​

(21,177)

​

 

907,360

​

Segment Adjusted EBITDA (3)

​

 

296,327

​

​

277,492

​

​

98,944

​

​

30,638

​

​

5,317

​

 

708,718

​

Total assets

​

 

731,441

​

​

428,000

​

​

689,874

​

​

325,498

​

​

329,569

​

 

2,504,381

​

Capital expenditures

​

 

111,419

​

​

58,616

​

​

—

​

​

40,033

​

​

11,218

​

 

221,286

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

640,260

​

$

384,286

​

$

52,798

​

$

—

​

$

19,160

​

$

1,096,504

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

36,410

​

​

(36,410)

​

​

—

​

Total revenues (1)

​

​

640,260

​

​

384,286

​

​

52,798

​

​

36,410

​

​

(17,250)

​

​

1,096,504

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

415,423

​

​

240,494

​

​

7,116

​

​

13,157

​

​

(24,619)

​

 

651,571

​

Segment Adjusted EBITDA (3)

​

 

197,601

​

​

125,873

​

​

46,405

​

​

23,253

​

​

7,370

​

 

400,502

​

Total assets

​

 

703,060

​

​

422,504

​

​

601,695

​

​

289,100

​

​

132,616

​

 

2,148,975

​

Capital expenditures

​

 

47,997

​

​

34,579

​

​

—

​

​

30

​

​

6,055

​

 

88,661

​

(1)Revenues included in the Other, Corporate and Elimination column are attributable to intercompany eliminations, which are primarily intercompany coal royalty eliminations, outside revenues at the Matrix Group and other outside miscellaneous sales and revenue activities.

​

(2)Segment Adjusted EBITDA Expense includes operating expenses, coal purchases and other income. Transportation expenses are excluded as transportation revenues are recognized in an amount equal to transportation expenses when title passes to the customer.  

​

​

The following is a reconciliation of consolidated Segment Adjusted EBITDA Expense to Operating expenses (excluding depreciation, depletion and amortization):

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Segment Adjusted EBITDA Expense

​

$

330,106

​

$

239,350

​

$

907,360

​

$

651,571

​

Outside coal purchases

​

 

—

​

 

(6,065)

​

 

(151)

​

 

(6,179)

​

Other income (expense)

​

 

192

​

 

(84)

​

 

1,337

​

 

(2,632)

​

Operating expenses (excluding depreciation, depletion and amortization)

​

$

330,298

​

$

233,201

​

$

908,546

​

$

642,760

​

​

(3)Segment Adjusted EBITDA is defined as net income attributable to ARLP before net interest expense, income taxes, depreciation, depletion and amortization, and general and administrative expenses.  Management therefore is able to focus solely on the evaluation of segment operating profitability as it relates to our revenues and operating expenses, which are primarily controlled by our segments.  Consolidated Segment Adjusted EBITDA is reconciled to net income as follows:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Consolidated Segment Adjusted EBITDA

​

$

271,510

​

$

154,589

​

$

708,718

​

$

400,502

​

General and administrative

​

 

(21,341)

​

 

(18,655)

​

 

(62,394)

​

 

(51,651)

​

Depreciation, depletion and amortization

​

 

(70,143)

​

 

(68,763)

​

 

(200,191)

​

 

(192,698)

​

Interest expense, net

​

 

(8,819)

​

 

(9,389)

​

 

(27,750)

​

 

(29,595)

​

Income tax expense

​

 

(6,600)

​

 

(234)

​

 

(55,646)

​

 

(227)

​

Net income attributable to ARLP

​

$

164,607

​

$

57,548

​

$

362,737

​

$

126,331

​

Noncontrolling interest

​

​

364

​

​

176

​

​

977

​

​

384

​

Net income

​

$

164,971

​

$

57,724

​

$

363,714

​

$

126,715

​

​
v3.22.2.2
SUBSEQUENT EVENTS
 9 Months Ended
Sep. 30, 2022
SUBSEQUENT EVENTS  
SUBSEQUENT EVENTS

18.SUBSEQUENT EVENTS

​

Jase Acquisition

​

On October 26, 2022, we acquired approximately 3,928 oil & gas net royalty acres in the Midland and Delaware Basins from Jase Minerals, LP for a purchase price of $81.2 million which was funded with cash on hand. Because the acquisition includes both developed and undeveloped properties we will account for the acquisition as a business combination.  This acquisition enhanced our ownership position in the Permian Basin.

​
v3.22.2.2
ORGANIZATION AND PRESENTATION (Policies)
 9 Months Ended
Sep. 30, 2022
ORGANIZATION AND PRESENTATION  
Consolidation

Significant Relationships Referenced in Notes to Condensed Consolidated Financial Statements

​

●References to "we," "us," "our" or "ARLP Partnership" mean the business and operations of Alliance Resource Partners, L.P., the parent company, as well as its consolidated subsidiaries.
●References to "ARLP" mean Alliance Resource Partners, L.P., individually as the parent company, and not on a consolidated basis.
●References to "MGP" mean Alliance Resource Management GP, LLC, ARLP's general partner.  
●References to "Mr. Craft" mean Joseph W. Craft III, the Chairman, President and Chief Executive Officer of MGP.
●References to "Intermediate Partnership" mean Alliance Resource Operating Partners, L.P., the intermediate partnership of Alliance Resource Partners, L.P.
●References to "Alliance Coal" mean Alliance Coal, LLC, the holding company for our coal mining operations.
●References to "Alliance Minerals" mean Alliance Minerals, LLC, the holding company for our oil and gas mineral interests.
●References to "Alliance Resource Properties" mean Alliance Resource Properties, LLC, the land holding company for certain of our coal mineral interests, including the subsidiaries of Alliance Resource Properties, LLC.

​

Organization

​

ARLP is a Delaware limited partnership listed on the NASDAQ Global Select Market under the ticker symbol "ARLP."  ARLP was formed in May 1999 and completed its initial public offering on August 19, 1999 when it acquired substantially all of the coal production and marketing assets of Alliance Resource Holdings, Inc., a Delaware corporation, and its subsidiaries.  We are managed by our general partner, MGP, a Delaware limited liability company which holds a non-economic general partner interest in ARLP.

Change in Tax Status

Change in Tax Status

​

On March 15, 2022, Alliance Minerals changed its federal income tax status from a pass-through entity to a taxable entity via a "check the box" election (the "Tax Election"), which became effective January 1, 2022. This election for Alliance Minerals is anticipated to reduce the total income tax burden on our oil & gas royalties, as Alliance Minerals will pay entity-level taxes at corporate tax rates that are well below individual tax rates that would otherwise be paid by our unitholders. For more information on the Tax Election please see Note 8 – Income Taxes.

Investment

Francis Investment

​

On April 5, 2022, we committed to invest up to $50 million in Francis Renewable Energy, LLC ("Francis") through the purchase of preferred equity interests.  As of September 30, 2022, we have elected to hold our commitment to Francis at our initial $20 million convertible note investment. Francis currently is active in the installation, management and operation of metered-for-fee, public-access electric vehicle ("EV") charging stations. Francis also develops and constructs EV charging stations for third-party customers.  Our investment in Francis furthers our business strategy to develop strategic relationships and invest in attractive opportunities in the fast-growing energy infrastructure transition.  For more information on this investment please see Note 9 – Variable Interest Entities.

​

Infinitum Investment

​

On April 29, 2022, we purchased $32.6 million of Series D Preferred Stock from Infinitum Electric, Inc. ("Infinitum"), a Texas-based startup developer and manufacturer of electric motors featuring printed circuit board stators which have the potential to result in motors that are smaller, lighter, quieter, more efficient and capable of operating at a fraction of the carbon footprint of conventional electric motors.  The preferred stock provides for non-cumulative dividends when and if declared by Infinitum's board of directors.  Each share is convertible, at any time, at our option, into shares of common stock of Infinitum.  Our investment in Infinitum furthers our business strategy to develop strategic relationships and invest in attractive opportunities in the fast-growing energy infrastructure transition.  For more information on this investment please see Note 10 – Investments.

​

On November 2, 2022, we purchased an additional $9.4 million of Series D Preferred Stock in Infinitum.

​

NGP ETP IV Investment

​

On June 2, 2022, we committed to purchase $25.0 million of limited partner interests in NGP ETP IV, L.P. ("NGP ETP IV"), a private equity fund sponsored by NGP Energy Capital Management, LLC ("NGP").   NGP ETP IV focuses on investments that are part of the global transition toward a lower carbon economy by partnering with top tier management teams and investing growth equity in companies that drive or enable the growth of renewable energy, the electrification of our economy or the efficient use of energy. For more information on this investment please see Note 9 – Variable Interest Entities.
Belvedere Acquisition

Belvedere Acquisition

​

On September 9, 2022, we acquired approximately 394 net oil & gas royalty acres in the Delaware Basin from Belvedere Operating, LLC ("Belvedere") for a purchase price of $11.4 million (the "Belvedere Acquisition"). This acquisition enhances our ownership position in the Permian Basin and furthers our business strategy to grow our Oil & Gas Royalties segment. For more information on this acquisition please see Note 3 – Acquisition.
Basis of Presentation

Basis of Presentation

​

The accompanying condensed consolidated financial statements include the accounts and operations of the ARLP Partnership and present our financial position as of September 30, 2022 and December 31, 2021, the results of our operations and comprehensive income for the three and nine months ended September 30, 2022 and 2021, and cash flows for the nine months ended September 30, 2022 and 2021.  All intercompany transactions and accounts have been eliminated.

​

These condensed consolidated financial statements and notes are prepared pursuant to the rules and regulations of the Securities and Exchange Commission for interim reporting and do not include all the information normally included with financial statements prepared in accordance with generally accepted accounting principles ("GAAP") of the United States.  These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2021.

​

These condensed consolidated financial statements and notes are unaudited. However, in the opinion of management, these condensed consolidated financial statements reflect all normal recurring adjustments necessary for a fair presentation of the results for the periods presented.  Results for interim periods are not necessarily indicative of results to be expected for the full year ending December 31, 2022.

Use of Estimates

Use of Estimates

​

The preparation of the ARLP Partnership's condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts and disclosures in our condensed consolidated financial statements.  Actual results could differ from those estimates.
Income Taxes

Income Taxes

​

We are not a taxable entity for federal or state income tax purposes; the tax effect of our activities accrues to our unitholders. Although publicly traded partnerships as a general rule are taxed as corporations, we qualify for an exemption because at least 90% of our income consists of qualifying income, as defined in Section 7704(c) of the Internal Revenue Code.  Net income for financial statement purposes may differ significantly from taxable income reportable to unitholders as a result of differences between the tax basis and financial reporting basis of assets and liabilities and the taxable income allocation requirements under our partnership agreement. Individual unitholders have different investment bases depending upon the timing and price of acquisition of their partnership units. Furthermore, each unitholder's tax accounting, which is partially dependent upon the unitholder's tax position, differs from the accounting followed in our consolidated financial statements.  Accordingly, the aggregate difference in the basis of our net assets for financial and tax reporting purposes cannot be readily determined because information regarding each unitholder's tax attributes in our partnership is not available to us.

​

Our subsidiary Alliance Minerals within our Oil & Gas Royalties segment and certain other subsidiaries within our Other, Corporate and Elimination category are subject to federal and state income taxes.  We use the liability method of accounting for income taxes, under which deferred tax assets and liabilities are recognized for the future tax consequences of (i) temporary differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities and (ii) operating losses and tax credit carryforwards.  Deferred income tax assets and liabilities are based on enacted rates applicable to the future period when those temporary differences are expected to be recovered or settled.  The effect of a change in tax status or a change in tax rates on deferred tax assets and liabilities is recognized in the period the change in status is elected or rate change is enacted.  A valuation allowance is provided for deferred tax assets when it is more likely than not the deferred tax assets will not be realized.

New Accounting Standards Issued and Adopted

New Accounting Standards Issued and Adopted

​

In November 2021, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2021-10, Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance ("ASU 2021-10").  ASU 2021-10 increases the transparency of government assistance including the disclosure of (1) the types of assistance, (2) an entity's accounting for the assistance, and (3) the effect of the assistance on an entity’s financial statements.  We adopted ASU 2021-10 on January 1, 2022.  The adoption of ASU 2021-10 did not have a material impact on our condensed consolidated financial statements.
v3.22.2.2
ACQUISITIONS (Tables)
 9 Months Ended
Sep. 30, 2022
ACQUISITION  
Summary of assets acquired and liabilities assumed

​

​

​

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

Mineral interests in proved properties

​

$

7,724

​

Mineral interests in unproved properties

​

​

3,667

​

​

​

$

11,391

​
Schedule of pro forma income statement

​

​

​

​

​

​

Three Months Ended

​

​

September 30, 

​

​

2022

    

​

(in thousands)

​

​

​

​

Revenue

$

112

​

Net income

 

78

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

​

​

​

(in thousands)

​

Total revenues

​

​

​

​

​

​

​

​

​

​

​

​

​

As reported

​

$

628,420

​

$

415,439

​

$

1,705,784

​

$

1,096,504

​

Pro forma

​

​

628,645

​

​

415,943

​

​

1,706,641

​

​

1,097,261

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

​

​

​

​

​

​

​

​

​

​

​

​

​

As reported

​

$

164,971

​

$

57,724

​

$

363,714

​

$

126,715

​

Pro forma

​

​

165,168

​

​

58,154

​

​

364,472

​

​

127,375

​
v3.22.2.2
INVENTORIES (Tables)
 9 Months Ended
Sep. 30, 2022
INVENTORIES  
Schedule of inventories

​

​

​

​

​

​

​

​

​

​

    

September 30, 

​

December 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

Coal

​

$

48,676

​

$

24,845

​

Supplies (net of reserve for obsolescence of $5,914 and $5,554, respectively)

​

 

50,089

​

 

35,457

​

Total inventories, net

​

$

98,765

​

$

60,302

​
v3.22.2.2
FAIR VALUE MEASUREMENTS (Tables)
 9 Months Ended
Sep. 30, 2022
FAIR VALUE MEASUREMENTS  
Summary of fair value measurements within the hierarchy

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

September 30, 2022

​

December 31, 2021

​

​

    

Level 1

    

Level 2

    

Level 3

    

Level 1

    

Level 2

    

Level 3

 

​

​

(in thousands)

​

Long-term debt

​

$

—

​

$

417,464

​

$

—

​

$

—

​

$

457,758

​

$

—

​

Total

​

$

—

​

$

417,464

​

$

—

​

$

—

​

$

457,758

​

$

—

​
v3.22.2.2
LONG-TERM DEBT (Tables)
 9 Months Ended
Sep. 30, 2022
LONG-TERM DEBT  
Schedule of long-term debt

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unamortized Discount and

​

​

​

Principal

​

Debt Issuance Costs

​

​

​

September 30, 

​

December 31, 

​

September 30, 

​

December 31, 

​

​

    

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Revolving credit facility

​

$

—

​

$

—

​

$

(3,281)

​

$

(5,019)

​

Senior notes

​

 

400,000

​

 

400,000

​

 

(2,362)

​

 

(3,048)

​

Securitization facility

​

​

—

​

​

—

​

​

—

​

​

—

​

May 2019 equipment financing

​

​

—

​

​

1,503

​

​

—

​

​

—

​

November 2019 equipment financing

​

​

23,846

​

​

31,972

​

​

—

​

​

—

​

June 2020 equipment financing

​

​

6,874

​

​

9,605

​

​

—

​

​

—

​

​

​

 

430,720

​

 

443,080

​

 

(5,643)

​

 

(8,067)

​

Less current maturities

​

 

(15,133)

​

 

(16,071)

​

 

—

​

 

—

​

Total long-term debt

​

$

415,587

​

$

427,009

​

$

(5,643)

​

$

(8,067)

​
v3.22.2.2
INCOME TAXES (Tables)
 9 Months Ended
Sep. 30, 2022
INCOME TAXES  
Components of income tax expense

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

 

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Current:

​

​

​

​

​

​

​

​

​

​

​

​

​

Federal

​

$

5,944

​

$

2

​

$

17,153

​

$

1

​

State

​

 

387

​

 

—

​

 

1,218

​

 

—

​

​

​

 

6,331

​

 

2

​

 

18,371

​

 

1

​

Deferred:

​

​

​

​

​

​

​

​

​

​

​

​

​

Federal

​

 

267

​

 

188

​

 

34,932

​

 

182

​

State

​

 

2

​

 

44

​

 

2,343

​

 

44

​

​

​

 

269

​

 

232

​

 

37,275

​

 

226

​

Income tax expense

​

$

6,600

​

$

234

​

$

55,646

​

$

227

​
Reconciliation from provision for income taxes at U.S. federal statutory rate to effective tax rate

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

 

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Income taxes at statutory rate

​

$

36,030

​

$

12,171

​

$

88,066

​

$

26,658

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Less: Income taxes at statutory rate on Partnership income not subject to income taxes

​

 

(29,888)

​

 

(11,777)

​

 

(71,562)

​

 

(25,935)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Increase (decrease) resulting from:

​

​

​

​

​

​

​

​

​

​

​

​

​

State taxes, net of federal income tax

​

 

426

​

 

66

​

 

1,244

​

 

138

​

Change in valuation allowance of deferred tax assets

​

 

9

​

 

(361)

​

 

10

​

 

(666)

​

Deferred taxes related to tax election

​

​

—

​

​

—

​

​

37,253

​

​

—

​

Other

​

 

23

​

 

135

​

 

635

​

 

32

​

Income tax expense

​

$

6,600

​

$

234

​

$

55,646

​

$

227

​
Components of deferred tax liabilities and deferred tax assets

​

​

​

​

​

​

​

​

​

​

​

September 30, 

​

December 31, 

 

​

    

2022

    

2021

 

​

​

(in thousands)

​

Deferred tax liabilities:

​

​

​

​

​

​

​

Property, plant and equipment

​

$

(38,770)

​

$

(2,169)

​

Total deferred tax liabilities

​

​

(38,770)

​

​

(2,169)

​

​

​

​

​

​

​

​

​

Deferred tax assets:

​

​

​

​

​

​

​

Federal loss carryovers and credits

​

​

734

​

​

1,328

​

Other

​

 

764

​

 

808

​

Total deferred tax assets

​

​

1,498

​

​

2,136

​

Less valuation allowance

​

​

(327)

​

​

(317)

​

Net deferred tax assets

​

​

1,171

​

​

1,819

​

​

​

​

​

​

​

​

​

Overall net deferred tax liabilities

​

$

(37,599)

​

$

(350)

​
v3.22.2.2
VARIABLE INTEREST ENTITIES (Tables)
 9 Months Ended
Sep. 30, 2022
VARIABLE INTEREST ENTITIES  
Schedule of distributions

​

​

​

​

​

​

​

​

​

​

​

Alliance

​

Bluegrass

​

​

​

Minerals

​

Minerals

​

​

​

(in thousands)

​

Contributions

​

$

143,112

​

$

5,963

​

Distributions

​

​

136,597

​

​

5,691

​
v3.22.2.2
INVESTMENTS (Tables)
 9 Months Ended
Sep. 30, 2022
All Dale Minerals III  
INVESTMENTS  
Schedule of changes in equity method investments

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

26,278

​

$

26,274

​

$

26,325

​

$

27,268

​

Equity method investment income

​

​

2,108

​

​

703

​

​

4,576

​

​

1,106

​

Distributions received

​

​

(2,448)

​

​

(797)

​

​

(4,963)

​

​

(2,194)

​

Ending balance

​

$

25,938

​

$

26,180

​

$

25,938

​

$

26,180

​
Francis Renewable Energy  
INVESTMENTS  
Schedule of changes in equity method investments

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2022

    

​

​

(in thousands)

​

Beginning balance

​

$

20,000

​

$

—

​

Contributions

​

​

—

​

​

20,000

​

Ending balance

​

$

20,000

​

$

20,000

​
NGP ETP  
INVESTMENTS  
Schedule of changes in equity method investments

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2022

​

​

​

(in thousands)

​

Beginning balance

​

$

110

​

$

—

​

Contributions

​

​

110

​

​

220

​

Ending balance

​

$

220

​

$

220

​
v3.22.2.2
PARTNERS' CAPITAL (Tables)
 9 Months Ended
Sep. 30, 2022
PARTNERS' CAPITAL  
Summary of quarterly per unit distribution paid

​

​

​

​

​

​

​

​

Payment Date

    

Per Unit Cash Distribution

 

Total Cash Distribution

 

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

May 14, 2021

​

$

0.1000

​

$

13,045

​

August 13, 2021

​

​

0.1000

​

​

13,041

​

November 12, 2021

​

​

0.2000

​

​

26,072

​

Total

​

$

0.4000

​

$

52,158

​

​

​

​

​

​

​

​

​

February 14, 2022

​

$

0.2500

​

$

32,750

​

May 13, 2022

​

​

0.3500

​

​

45,810

​

August 12, 2022

​

​

0.4000

​

​

52,338

​

November 14, 2022 (1)

​

​

0.5000

​

​

—

​

Total

​

$

1.5000

​

$

130,898

​

(1)On October 28, 2022, we declared this quarterly distribution payable on November 14, 2022 to all unitholders of record as of November 7, 2022.  
Summary of changes to Partners' Capital

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Accumulated

​

​

​

​

​

​

​

​

​

Number of

​

Limited 

​

Other

​

​

​

​

​

​

​

​

​

Limited Partner

​

Partners'

​

Comprehensive

​

Noncontrolling

​

Total Partners'

​

​

    

Units

    

Capital

    

Income (Loss)

    

Interest

    

 Capital

 

​

​

(in thousands, except unit data)

​

Balance at January 1, 2022

 

127,195,219

​

$

1,279,183

​

$

(64,229)

​

$

11,115

​

$

1,226,069

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

36,652

​

 

—

​

​

290

 

 

36,942

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

790

​

 

—

 

 

790

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

37,732

​

Common unit-based compensation

 

—

​

 

2,640

​

​

—

​

​

—

​

​

2,640

​

Distributions on deferred common unit-based compensation

 

—

​

 

(950)

​

​

—

​

​

—

​

​

(950)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(298)

​

​

(298)

​

Distributions to Partners

 

—

​

​

(31,800)

​

​

—

​

​

—

​

​

(31,800)

​

Balance at March 31, 2022

​

127,195,219

​

​

1,285,725

​

​

(63,439)

​

​

11,107

​

​

1,233,393

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

161,478

​

 

—

​

​

323

 

 

161,801

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

794

​

 

—

 

 

794

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

162,595

​

Common unit-based compensation

 

—

​

 

2,340

​

​

—

​

​

—

​

​

2,340

​

Distributions on deferred common unit-based compensation

 

—

​

 

(1,292)

​

​

—

​

​

—

​

​

(1,292)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(325)

​

​

(325)

​

Distributions to Partners

 

—

​

​

(44,518)

​

​

—

​

​

—

​

​

(44,518)

​

Balance at June 30, 2022

​

127,195,219

​

$

1,403,733

​

$

(62,645)

​

$

11,105

​

$

1,352,193

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

164,607

​

 

—

​

​

364

 

 

164,971

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

802

​

 

—

 

 

802

​

Total comprehensive income

 

—

​

​

—

​

​

—

​

​

—

 

​

165,773

​

Common unit-based compensation

 

—

​

 

2,677

​

​

—

​

​

—

​

​

2,677

​

Distributions on deferred common unit-based compensation

 

—

​

 

(1,461)

​

​

—

​

​

—

​

​

(1,461)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(485)

​

​

(485)

​

Distributions to Partners

 

—

​

​

(50,877)

​

​

—

​

​

—

​

​

(50,877)

​

Balance at September 30, 2022

 

127,195,219

​

$

1,518,679

​

$

(61,843)

​

$

10,984

​

$

1,467,820

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Accumulated

​

​

​

​

​

​

​

​

​

Number of

​

Limited 

​

Other

​

​

​

​

​

​

​

​

​

Limited Partner

​

Partners'

​

Comprehensive

​

Noncontrolling

​

Total Partners'

​

​

    

Units

    

Capital

    

Income (Loss)

    

Interest

    

 Capital

 

​

​

(in thousands, except unit data)

​

Balance at January 1, 2021

 

127,195,219

​

$

1,148,565

​

$

(87,674)

​

$

11,376

​

$

1,072,267

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

24,748

​

 

—

​

​

78

 

 

24,826

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

2,231

​

 

—

 

 

2,231

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

27,057

​

Common unit-based compensation

 

—

​

 

723

​

​

—

​

​

—

​

​

723

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(141)

​

​

(141)

​

Balance at March 31, 2021

 

127,195,219

​

​

1,174,036

​

​

(85,443)

​

​

11,313

​

​

1,099,906

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

44,035

​

 

—

​

​

130

 

 

44,165

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

2,231

​

 

—

 

 

2,231

​

Total comprehensive loss

 

​

​

​

​

​

​

​

​

​

​

 

​

46,396

​

Common unit-based compensation

 

—

​

 

1,485

​

​

—

​

​

—

​

​

1,485

​

Distributions on deferred common unit-based compensation

 

—

​

 

(324)

​

​

—

​

​

—

​

​

(324)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(222)

​

​

(222)

​

Distributions to Partners

 

—

​

​

(12,721)

​

​

—

​

​

—

​

​

(12,721)

​

Balance at June 30, 2021

 

127,195,219

​

​

1,206,511

​

​

(83,212)

​

​

11,221

​

​

1,134,520

​

Comprehensive income:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income

 

—

​

 

57,548

​

 

—

​

​

176

 

 

57,724

​

Actuarially determined long-term liability adjustments

 

—

​

 

—

​

 

2,231

​

 

—

 

 

2,231

​

Total comprehensive income

 

​

​

​

​

​

​

​

​

​

​

 

​

59,955

​

Settlement of deferred compensation plans

​

​

​

​

(1,090)

​

​

—

​

​

—

​

​

(1,090)

​

Common unit-based compensation

 

—

​

 

1,746

​

​

—

​

​

—

​

​

1,746

​

Distributions on deferred common unit-based compensation

 

—

​

 

(323)

​

​

—

​

​

—

​

​

(323)

​

Distributions from consolidated company to noncontrolling interest

​

—

​

​

—

​

​

—

​

​

(252)

​

​

(252)

​

Distributions to Partners

 

—

​

​

(12,718)

​

​

—

​

​

—

​

​

(12,718)

​

Balance at September 30, 2021

 

127,195,219

​

$

1,251,674

​

$

(80,981)

​

$

11,145

​

$

1,181,838

​
v3.22.2.2
REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)
 9 Months Ended
Sep. 30, 2022
REVENUE FROM CONTRACTS WITH CUSTOMERS  
Schedule of disaggregation of revenues by type

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Coal Operations

​

Royalties

​

Other,

​

​

​

​

​

​

Illinois

    

​

    

​

​

​

    

Corporate and

    

​

​

​

​

    

Basin

    

Appalachia

    

Oil & Gas

    

Coal

    

Elimination

    

Consolidated

​

​

​

(in thousands)

​

Three Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

314,271

​

$

236,292

​

$

—

​

$

—

​

$

—

​

$

550,563

​

Oil & gas royalties

​

​

—

​

​

—

​

​

35,312

​

​

—

​

​

—

​

​

35,312

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

16,708

​

​

(16,708)

​

​

—

​

Transportation revenues

​

​

19,508

​

​

9,040

​

​

—

​

​

—

​

​

—

​

​

28,548

​

Other revenues

​

​

1,455

​

​

392

​

​

2,260

​

​

—

​

​

9,890

​

​

13,997

​

Total revenues

​

$

335,234

​

$

245,724

​

$

37,572

​

$

16,708

​

$

(6,818)

​

$

628,420

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended September 30, 2021

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

217,637

​

$

144,627

​

$

—

​

$

—

​

$

—

​

$

362,264

​

Oil & gas royalties

​

​

—

​

​

—

​

​

20,109

​

​

—

​

​

—

​

​

20,109

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

13,456

​

​

(13,456)

​

​

—

​

Transportation revenues

​

​

12,121

​

​

9,906

​

​

—

​

​

—

​

​

—

​

​

22,027

​

Other revenues

​

​

1,335

​

​

411

​

​

1,082

​

​

—

​

​

8,211

​

​

11,039

​

Total revenues

​

$

231,093

​

$

154,944

​

$

21,191

​

$

13,456

​

$

(5,245)

​

$

415,439

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

858,565

​

$

612,165

​

$

—

​

$

—

​

$

—

​

$

1,470,730

​

Oil & gas royalties

​

​

—

​

​

—

​

​

102,166

​

​

—

​

​

—

​

​

102,166

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

46,400

​

​

(46,400)

​

​

—

​

Transportation revenues

​

​

59,848

​

​

33,457

​

​

—

​

​

—

​

​

—

​

​

93,305

​

Other revenues

​

​

5,014

​

​

1,083

​

​

2,946

​

​

—

​

​

30,540

​

​

39,583

​

Total revenues

​

$

923,427

​

$

646,705

​

$

105,112

​

$

46,400

​

$

(15,860)

​

$

1,705,784

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

610,435

​

$

365,290

​

$

—

​

$

—

​

$

—

​

$

975,725

​

Oil & gas royalties

​

​

—

​

​

—

​

​

51,222

​

​

—

​

​

—

​

​

51,222

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

36,410

​

​

(36,410)

​

​

—

​

Transportation revenues

​

​

27,235

​

​

17,918

​

​

—

​

​

—

​

​

—

​

​

45,153

​

Other revenues

​

​

2,590

​

​

1,078

​

​

1,576

​

​

—

​

​

19,160

​

​

24,404

​

Total revenues

​

$

640,260

​

$

384,286

​

$

52,798

​

$

36,410

​

$

(17,250)

​

$

1,096,504

​
Schedule of current coal supply contracts allocated to performance obligations that are unsatisfied or partially unsatisfied

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

2025 and

​

​

​

    

2022

    

2023

    

2024

    

Thereafter

    

Total

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Illinois Basin Coal Operations coal revenues

​

$

380,626

​

$

853,006

​

$

489,615

​

$

480,298

​

$

2,203,545

Appalachia Coal Operations coal revenues

​

​

298,080

​

​

372,353

​

​

310,436

​

​

156,700

​

​

1,137,569

Total coal revenues (1)

​

$

678,706

​

$

1,225,359

​

$

800,051

​

$

636,998

​

$

3,341,114

(1) Coal revenues generally consists of consolidated revenues excluding our Oil & Gas Royalties segment as well as intercompany revenues from our Coal Royalties segment.

v3.22.2.2
EARNINGS PER LIMITED PARTNER UNIT (Tables)
 9 Months Ended
Sep. 30, 2022
EARNINGS PER LIMITED PARTNER UNIT  
Reconciliation of net income and EPU calculations

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

    

2022

    

2021

    

2022

    

2021

    

​

​

(in thousands, except per unit data)

​

Net income attributable to ARLP

​

$

164,607

​

$

57,548

​

$

362,737

​

$

126,331

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Less:

​

​

​

​

​

​

​

​

​

​

​

​

​

Distributions to participating securities

​

 

(2,180)

​

 

(765)

​

 

(5,452)

​

 

(1,384)

​

Undistributed earnings attributable to participating securities

​

 

(3,275)

​

 

(951)

​

 

(6,504)

​

 

(1,832)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Net income attributable to ARLP available to limited partners

​

$

159,152

​

$

55,832

​

$

350,781

​

$

123,115

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Weighted-average limited partner units outstanding – basic and diluted

​

 

127,195

​

 

127,195

​

 

127,195

​

 

127,195

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Earnings per limited partner unit - basic and diluted (1)

​

$

1.25

​

$

0.44

​

$

2.76

​

$

0.97

​

(1)Diluted EPU gives effect to all potentially dilutive common units outstanding during the period using the treasury stock method. Diluted EPU excludes all potentially dilutive units calculated under the treasury stock method if their effect is anti-dilutive.  The combined total of LTIP, SERP and Directors' Deferred Compensation Plan units of 3,754 and 3,431 for the three and nine months ended September 30, 2022, respectively, and 2,328 and 1,706 for the three and nine months ended September 30, 2021, respectively, were considered anti-dilutive under the treasury stock method.
v3.22.2.2
WORKERS' COMPENSATION AND PNEUMOCONIOSIS (Tables)
 9 Months Ended
Sep. 30, 2022
Black lung benefits:  
Reconciliation of changes in workers' compensation liability

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

 

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

47,221

​

$

52,059

​

$

53,448

​

$

54,739

​

Accruals increase

​

 

2,918

​

 

1,674

​

 

7,464

​

 

4,911

​

Payments

​

 

(2,856)

​

 

(2,939)

​

 

(8,938)

​

 

(7,914)

​

Interest accretion

​

 

287

​

 

232

​

 

861

​

 

695

​

Valuation gain (1)

​

 

—

​

 

—

​

 

(5,265)

​

 

(1,405)

​

Ending balance

​

$

47,570

​

$

51,026

​

$

47,570

​

$

51,026

​

(1)Our estimate of the liability for the present value of current workers′ compensation benefits is based on our actuarial calculations.  Our actuarial calculations are based on a blend of actuarial projection methods and numerous assumptions including claims development patterns, mortality, medical costs and interest rates.  The valuation gain in 2022 is due to an increase in the discount rate from 2.41% on December 31, 2021 to 4.22% on June 30, 2022.  The valuation gain in 2021 is due to an increase in the discount rate from 1.95% on December 31, 2020 to 2.34% on June 30, 2021.
Pneumoconiosis benefits  
Black lung benefits:  
Components of net periodic benefit cost

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Service cost

​

$

949

​

$

1,007

​

$

2,850

​

$

3,027

 

Interest cost (1)

​

 

747

​

 

636

​

 

2,243

​

 

1,909

​

Net amortization (1)

​

 

260

​

 

1,043

​

 

779

​

 

3,129

​

Net periodic benefit cost

​

$

1,956

​

$

2,686

​

$

5,872

​

$

8,065

​

(1)Interest cost and net amortization are included in the Other income (expense) line item within our condensed consolidated statements of income.
v3.22.2.2
COMMON UNIT-BASED COMPENSATION PLANS (Tables)
 9 Months Ended
Sep. 30, 2022
COMMON UNIT-BASED COMPENSATION PLANS  
Summary of non-vested share activity

​

​

​

​

​

​

​

​

​

​

​

​

    

Number of units

 

Weighted average grant date fair value per unit

 

Intrinsic value

 

​

​

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

​

Non-vested grants at January 1, 2022

​

3,130,475

​

$

5.59

​

$

39,569

​

Granted (1)

 

769,907

​

​

14.65

​

​

​

​

Forfeited

 

(200,119)

​

 

6.96

​

​

​

​

Non-vested grants at September 30, 2022

 

3,700,263

​

 

7.40

​

​

84,736

​

(1)The restricted units granted during 2022 have certain minimum-value guarantees per unit, regardless of whether or not the awards vest.
SERP and Deferred Compensation Plans  
COMMON UNIT-BASED COMPENSATION PLANS  
Summary of activity in share-based plans

​

​

​

​

​

​

​

​

​

​

​

​

    

Number of units

 

Weighted average grant date fair value per unit

 

Intrinsic value

 

​

​

​

​

​

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

​

Phantom units outstanding as of January 1, 2022

​

668,698

​

$

20.37

​

$

8,452

​

Granted

​

37,758

​

​

18.25

​

​

​

​

Phantom units outstanding as of September 30, 2022

 

706,456

​

 

20.26

​

​

16,178

​
v3.22.2.2
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS (Tables)
 9 Months Ended
Sep. 30, 2022
Defined benefit pension plan  
Employee Benefit Plans  
Components of net periodic benefit cost

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

    

​

​

(in thousands)

​

Interest cost

​

$

940

​

$

860

​

$

2,808

​

$

2,580

​

Expected return on plan assets

​

 

(1,654)

​

 

(1,671)

​

 

(4,983)

​

 

(5,013)

​

Amortization of prior service cost

​

​

47

​

​

47

​

​

140

​

​

140

​

Amortization of net loss

​

 

495

​

 

1,141

​

 

1,467

​

 

3,424

​

Net periodic benefit cost (1)

​

$

(172)

​

$

377

​

$

(568)

​

$

1,131

​

(1)Net periodic benefit cost for the Pension Plan is included in the Other income (expense) line item within our condensed consolidated statements of income.
v3.22.2.2
SEGMENT INFORMATION (Tables)
 9 Months Ended
Sep. 30, 2022
SEGMENT INFORMATION  
Schedule of reportable segment results

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Coal Operations

​

Royalties

​

Other,

​

​

​

 

​

​

Illinois

    

​

    

​

​

​

​

Corporate and

    

​

​

​

​

    

Basin

    

Appalachia

    

Oil & Gas

    

Coal

​

Elimination

    

Consolidated

 

​

​

(in thousands)

 

Three Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

335,234

​

$

245,724

​

$

37,572

​

$

—

​

$

9,890

​

$

628,420

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

16,708

​

​

(16,708)

​

​

—

​

Total revenues (1)

​

​

335,234

​

​

245,724

​

​

37,572

​

​

16,708

​

​

(6,818)

​

​

628,420

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

194,967

​

 

134,672

​

 

3,531

​

 

5,545

​

 

(8,609)

​

 

330,106

​

Segment Adjusted EBITDA (3)

​

 

120,760

​

 

102,012

​

 

35,783

​

 

11,163

​

 

1,792

​

 

271,510

​

Capital expenditures

​

 

39,529

​

 

17,780

​

 

—

​

 

40,033

​

 

1,962

​

 

99,304

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended September 30, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

231,093

​

$

154,944

​

$

21,191

​

$

—

​

$

8,211

​

$

415,439

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

13,456

​

​

(13,456)

​

​

—

​

Total revenues (1)

​

​

231,093

​

​

154,944

​

​

21,191

​

​

13,456

​

​

(5,245)

​

​

415,439

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

149,666

​

 

92,312

​

 

2,639

​

 

4,258

​

 

(9,525)

​

 

239,350

​

Segment Adjusted EBITDA (3)

​

 

69,305

​

 

52,726

​

 

19,080

​

 

9,198

​

 

4,280

​

 

154,589

​

Capital expenditures

​

 

19,081

​

 

12,531

​

 

—

​

 

30

​

 

1,393

​

 

33,035

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

923,427

​

$

646,705

​

$

105,112

​

$

—

​

$

30,540

​

$

1,705,784

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

46,400

​

​

(46,400)

​

​

—

​

Total revenues (1)

​

​

923,427

​

​

646,705

​

​

105,112

​

​

46,400

​

​

(15,860)

​

​

1,705,784

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

567,253

​

​

335,756

​

​

9,766

​

​

15,762

​

​

(21,177)

​

 

907,360

​

Segment Adjusted EBITDA (3)

​

 

296,327

​

​

277,492

​

​

98,944

​

​

30,638

​

​

5,317

​

 

708,718

​

Total assets

​

 

731,441

​

​

428,000

​

​

689,874

​

​

325,498

​

​

329,569

​

 

2,504,381

​

Capital expenditures

​

 

111,419

​

​

58,616

​

​

—

​

​

40,033

​

​

11,218

​

 

221,286

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Nine Months Ended September 30, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

640,260

​

$

384,286

​

$

52,798

​

$

—

​

$

19,160

​

$

1,096,504

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

36,410

​

​

(36,410)

​

​

—

​

Total revenues (1)

​

​

640,260

​

​

384,286

​

​

52,798

​

​

36,410

​

​

(17,250)

​

​

1,096,504

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

415,423

​

​

240,494

​

​

7,116

​

​

13,157

​

​

(24,619)

​

 

651,571

​

Segment Adjusted EBITDA (3)

​

 

197,601

​

​

125,873

​

​

46,405

​

​

23,253

​

​

7,370

​

 

400,502

​

Total assets

​

 

703,060

​

​

422,504

​

​

601,695

​

​

289,100

​

​

132,616

​

 

2,148,975

​

Capital expenditures

​

 

47,997

​

​

34,579

​

​

—

​

​

30

​

​

6,055

​

 

88,661

​

(1)Revenues included in the Other, Corporate and Elimination column are attributable to intercompany eliminations, which are primarily intercompany coal royalty eliminations, outside revenues at the Matrix Group and other outside miscellaneous sales and revenue activities.

​

(2)Segment Adjusted EBITDA Expense includes operating expenses, coal purchases and other income. Transportation expenses are excluded as transportation revenues are recognized in an amount equal to transportation expenses when title passes to the customer.  
Reconciliation of consolidated Segment Adjusted EBITDA Expense to operating expenses (excluding depreciation, depletion and amortization)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Segment Adjusted EBITDA Expense

​

$

330,106

​

$

239,350

​

$

907,360

​

$

651,571

​

Outside coal purchases

​

 

—

​

 

(6,065)

​

 

(151)

​

 

(6,179)

​

Other income (expense)

​

 

192

​

 

(84)

​

 

1,337

​

 

(2,632)

​

Operating expenses (excluding depreciation, depletion and amortization)

​

$

330,298

​

$

233,201

​

$

908,546

​

$

642,760

​
Reconciliation of consolidated Segment Adjusted EBITDA to net income

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

Nine Months Ended

​

​

​

September 30, 

​

September 30, 

​

​

​

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Consolidated Segment Adjusted EBITDA

​

$

271,510

​

$

154,589

​

$

708,718

​

$

400,502

​

General and administrative

​

 

(21,341)

​

 

(18,655)

​

 

(62,394)

​

 

(51,651)

​

Depreciation, depletion and amortization

​

 

(70,143)

​

 

(68,763)

​

 

(200,191)

​

 

(192,698)

​

Interest expense, net

​

 

(8,819)

​

 

(9,389)

​

 

(27,750)

​

 

(29,595)

​

Income tax expense

​

 

(6,600)

​

 

(234)

​

 

(55,646)

​

 

(227)

​

Net income attributable to ARLP

​

$

164,607

​

$

57,548

​

$

362,737

​

$

126,331

​

Noncontrolling interest

​

​

364

​

​

176

​

​

977

​

​

384

​

Net income

​

$

164,971

​

$

57,724

​

$

363,714

​

$

126,715

​
v3.22.2.2
ORGANIZATION AND PRESENTATION (Details)
$ in Thousands
 9 Months Ended
Nov. 02, 2022
USD ($)
Sep. 09, 2022
USD ($)
a
Apr. 29, 2022
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Jun. 02, 2022
USD ($)
Apr. 05, 2022
USD ($)
Dec. 31, 2021
USD ($)
Ownership interests                
Equity method investments       $ 46,158       $ 26,325
Equity investment without readily determinable fair value       32,639        
Payment to acquire investment       32,639        
Payments for acquisitions of businesses       11,391        
Belvedere                
Ownership interests                
Royalty acres, net | a   394            
Payments for acquisitions of businesses   $ 11,400            
Francis Renewable Energy                
Ownership interests                
Funding commitment             $ 50,000  
Equity method investments       20,000 $ 20,000      
Infinitum Electric                
Ownership interests                
Equity investment without readily determinable fair value     $ 32,600          
Payment to acquire investment $ 9,400   $ 32,600          
NGP ETP                
Ownership interests                
Funding commitment           $ 25,000    
Equity method investments       $ 220 $ 110      
v3.22.2.2
ACQUISITIONS - Assets and Liabilities (Details)
$ in Thousands
 9 Months Ended
Sep. 09, 2022
USD ($)
a
Sep. 30, 2022
USD ($)
Acquisition    
Payments for acquisitions of businesses   $ 11,391
Belvedere    
Acquisition    
Royalty acres, net | a 394  
Payments for acquisitions of businesses $ 11,400  
Assets acquired and liabilities assumed    
Mineral interests in proved properties 7,724  
Mineral interests in unproved properties 3,667  
Net assets acquired $ 11,391  
v3.22.2.2
ACQUISITIONS - Pro Forma (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Pro forma condensed consolidated income statement                
Total revenues, As reported $ 628,420     $ 415,439     $ 1,705,784 $ 1,096,504
Net income 164,971 $ 161,801 $ 36,942 57,724 $ 44,165 $ 24,826 363,714 126,715
Belvedere                
Acquisitions, additional information                
Revenue of acquired business 112              
Net income of acquired business 78              
Pro forma condensed consolidated income statement                
Total revenues, Pro forma 628,645     415,943     1,706,641 1,097,261
Net income, Pro forma $ 165,168     $ 58,154     $ 364,472 $ 127,375
v3.22.2.2
INVENTORIES (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
INVENTORIES    
Coal $ 48,676 $ 24,845
Supplies (net of reserve for obsolescence) 50,089 35,457
Total inventories, net 98,765 60,302
Reserve for obsolescence $ 5,914 $ 5,554
v3.22.2.2
FAIR VALUE MEASUREMENTS (Details) - Estimated fair value - Significant Observable Inputs (Level 2) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
FAIR VALUE MEASUREMENTS    
Long-term debt $ 417,464 $ 457,758
Total $ 417,464 $ 457,758
v3.22.2.2
LONG-TERM DEBT - Components (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Principal    
Aggregate maturities of long-term debt $ 430,720 $ 443,080
Less current maturities (15,133) (16,071)
Total long-term debt 415,587 427,009
Unamortized Discount and Debt Issuance Costs    
Unamortized debt issuance costs including current and non-current (5,643) (8,067)
Total unamortized debt issuance costs (5,643) (8,067)
Revolving credit facility    
Unamortized Discount and Debt Issuance Costs    
Unamortized debt issuance costs including current and non-current (3,281) (5,019)
Senior notes due 2025    
Principal    
Aggregate maturities of long-term debt 400,000 400,000
Unamortized Discount and Debt Issuance Costs    
Unamortized debt issuance costs including current and non-current (2,362) (3,048)
May 2019 equipment financing    
Principal    
Aggregate maturities of long-term debt   1,503
November 2019 equipment financing    
Principal    
Aggregate maturities of long-term debt 23,846 31,972
June 2020 equipment financing    
Principal    
Aggregate maturities of long-term debt $ 6,874 $ 9,605
v3.22.2.2
LONG-TERM DEBT - Credit Facility (Details)
$ in Thousands
 9 Months Ended
Mar. 09, 2020
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Long-Term Debt      
Debt issuance costs incurred     $ 113
Credit Agreement      
Long-Term Debt      
Maximum borrowing capacity $ 459,500    
ARLP debt arrangements requirements, fixed charge coverage ratio 1.0    
ARLP debt arrangements requirements, debt to cash flow ratio 2.5    
ARLP debt arrangements requirements, cash flow to interest expense ratio 3.0    
Actual debt to cash flow ratio for trailing twelve months   0.64  
Actual cash flow to interest expense ratio for trailing twelve months   17.63  
ARLP debt arrangements requirements, period over which the ratios are required to be maintained 12 months    
Credit Agreement | Credit Agreement, first lien      
Long-Term Debt      
ARLP debt arrangements requirements, debt to cash flow ratio 1.5    
Actual debt to cash flow ratio for trailing twelve months   0.05  
Revolving credit facility      
Long-Term Debt      
Debt available for borrowing   $ 415,400  
Annual commitment fee percentage, undrawn portion   0.35%  
Revolving credit facility | Eurodollar Rate      
Long-Term Debt      
Effective interest rate (as a percent)   5.49%  
Letters of credit subfacility      
Long-Term Debt      
Maximum borrowing capacity $ 125,000    
Letters of credit outstanding   $ 44,100  
Swingline subfacility      
Long-Term Debt      
Maximum borrowing capacity $ 15,000    
v3.22.2.2
LONG-TERM DEBT - 2025 Senior Notes (Details) - Senior notes due 2025
$ in Millions
Apr. 24, 2017
USD ($)
Issuance of Senior Notes  
Principal amount $ 400.0
Term 8 years
Interest rate (as a percent) 7.50%
v3.22.2.2
LONG-TERM DEBT - Securitization Facility (Details) - Securitization Facility - USD ($)
$ in Millions
Sep. 30, 2022
Jan. 31, 2021
Dec. 05, 2014
Long-Term Debt      
Maximum borrowing capacity   $ 60.0 $ 100.0
Letters of credit outstanding $ 9.2    
Debt available for borrowing 50.8    
Facility outstanding amount $ 0.0    
v3.22.2.2
LONG-TERM DEBT - Equipment financing and other (Details)
$ in Millions
Jun. 05, 2020
USD ($)
Nov. 06, 2019
USD ($)
payment
May 17, 2019
USD ($)
May 2019 Equipment Financing      
Long-Term Debt      
Principal amount     $ 10.0
Term     36 months
Effective interest rate (as a percent)     6.25%
November 2019 Equipment Financing      
Long-Term Debt      
Principal amount   $ 53.1  
Term   4 years  
Effective interest rate (as a percent)   4.75%  
Number of monthly payments | payment   47  
Periodic Payment   $ 1.0  
Balloon payment on maturity   $ 11.6  
June 2020 equipment financing      
Long-Term Debt      
Principal amount $ 14.7    
Term 48 months    
Effective interest rate (as a percent) 6.10%    
v3.22.2.2
INCOME TAXES - Components (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Current:        
Federal $ 5,944 $ 2 $ 17,153 $ 1
State 387   1,218  
Total current income tax expense 6,331 2 18,371 1
Deferred:        
Federal 267 188 34,932 182
State 2 44 2,343 44
Total deferred income tax expense 269 232 37,275 226
Income tax expense $ 6,600 $ 234 $ 55,646 $ 227
v3.22.2.2
INCOME TAXES - Tax election (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2019
Dec. 31, 2021
Taxes            
Deferred tax liability $ 37,599   $ 37,599     $ 350
Income tax expense $ 6,600 $ 234 $ 55,646 $ 227    
Earnings per limited partner unit - basic (in dollars per unit) $ 1.25 $ 0.44 $ 2.76 $ 0.97    
Earnings per limited partner unit - diluted (in dollars per unit) $ 1.25 $ 0.44 $ 2.76 $ 0.97    
AllDale I and II            
Taxes            
Non - cash acquisition gain recognized         $ 177,000  
Change in tax accounting            
Taxes            
Deferred tax liability $ 37,300   $ 37,300      
Income tax expense     $ 37,300      
Earnings per limited partner unit - basic (in dollars per unit)     $ (0.29)      
Earnings per limited partner unit - diluted (in dollars per unit)     $ (0.29)      
v3.22.2.2
INCOME TAXES - Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Taxes        
Income taxes at statutory rate $ 36,030 $ 12,171 $ 88,066 $ 26,658
Less: Income taxes at statutory rate on Partnership income not subject to income taxes (29,888) (11,777) (71,562) (25,935)
Increase/(decrease) resulting from:        
State taxes, net of federal income tax 426 66 1,244 138
Change in valuation allowance of deferred tax assets 9 (361) 10 (666)
Other 23 135 635 32
Income tax expense $ 6,600 $ 234 55,646 $ 227
Change in tax accounting        
Increase/(decrease) resulting from:        
Deferred taxes related to tax election     37,253  
Income tax expense     $ 37,300  
v3.22.2.2
INCOME TAXES - Deferred tax (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Deferred tax liabilities:    
Property, plant and equipment $ (38,770) $ (2,169)
Deferred tax liabilities (38,770) (2,169)
Deferred tax assets:    
Federal loss carryovers and credits 734 1,328
Other 764 808
Total deferred tax assets 1,498 2,136
Less valuation allowance (327) (317)
Net deferred tax assets 1,171 1,819
Overall net deferred tax liabilities $ (37,599) $ (350)
v3.22.2.2
VARIABLE INTEREST ENTITIES - Cavalier (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Aug. 12, 2022
May 13, 2022
Feb. 14, 2022
Nov. 12, 2021
Aug. 13, 2021
May 14, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Variable Interest Entities                  
Distributions paid to Partners $ 52,338 $ 45,810 $ 32,750 $ 26,072 $ 13,041 $ 13,045 $ 130,898 $ 26,086 $ 52,158
Cavalier Minerals | Alliance Minerals                  
Variable Interest Entities                  
Contributions             143,112    
Distributions paid to Partners             136,597    
Cavalier Minerals | Bluegrass Minerals                  
Variable Interest Entities                  
Contributions             5,963    
Distributions paid to Partners             $ 5,691    
Cavalier Minerals | Bluegrass Minerals                  
Variable Interest Entities                  
Incentive distribution of available cash (as a percent)             25.00%    
Cavalier Minerals                  
Variable Interest Entities                  
Ownership interest in VIE (as a percent)             96.00%    
Cavalier Minerals | Bluegrass Minerals                  
Variable Interest Entities                  
Noncontrolling ownership interest (as a percent)             4.00%    
v3.22.2.2
VARIABLE INTEREST ENTITIES - All Dale III (Detail) - All Dale Minerals III - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2022
Feb. 28, 2017
Investments    
Other Commitment   $ 30.0
Distribution after hurdles (as a percent) 25.00%  
Specified internal rate of return (as a percent) 10.00%  
Percentage of available cash distributed 125.00%  
All Dale Minerals III    
Investments    
Ownership percentage by limited partners 13.90%  
v3.22.2.2
VARIABLE INTEREST ENTITIES - Investments (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2022
Jun. 02, 2022
Apr. 05, 2022
Investments        
Purchase of equity method investment   $ 20,220    
Francis Renewable Energy        
Investments        
Funding commitment       $ 50,000
Purchase of equity method investment   20,000    
NGP ETP        
Investments        
Funding commitment     $ 25,000  
Purchase of equity method investment $ 110 $ 220    
v3.22.2.2
INVESTMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Nov. 02, 2022
Apr. 29, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Investments            
Beginning balance         $ 26,325  
Contributions         20,220  
Equity method investment income     $ 2,108 $ 703 4,576 $ 1,106
Ending balance     46,158   46,158  
Payment to acquire investment         32,639  
All Dale Minerals III            
Investments            
Beginning balance     26,278 26,274 26,325 27,268
Equity method investment income     2,108 703 4,576 1,106
Distributions received     (2,448) (797) (4,963) (2,194)
Ending balance     25,938 $ 26,180 25,938 $ 26,180
Francis Renewable Energy            
Investments            
Beginning balance     20,000      
Contributions         20,000  
Ending balance     20,000   20,000  
NGP ETP            
Investments            
Beginning balance     110      
Contributions     110   220  
Ending balance     $ 220   $ 220  
Infinitum Electric            
Investments            
Payment to acquire investment $ 9,400 $ 32,600        
v3.22.2.2
PARTNERS' CAPITAL - Distributions (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Nov. 14, 2022
Aug. 12, 2022
May 13, 2022
Feb. 14, 2022
Nov. 12, 2021
Aug. 13, 2021
May 14, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
PARTNERS' CAPITAL                    
Quarterly distribution paid (in dollars per unit) $ 0.5000 $ 0.4000 $ 0.3500 $ 0.2500 $ 0.2000 $ 0.1000 $ 0.1000 $ 1.5000   $ 0.4000
Total Cash Distribution   $ 52,338 $ 45,810 $ 32,750 $ 26,072 $ 13,041 $ 13,045 $ 130,898 $ 26,086 $ 52,158
v3.22.2.2
PARTNERS' CAPITAL - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 9 Months Ended 53 Months Ended
Sep. 30, 2022
Sep. 30, 2022
May 31, 2018
Partners' capital      
Treasury units retired $ 0.0    
Limited Partners' Capital      
Partners' capital      
Repurchase and retire authorization     $ 100.0
Treasury units retired   $ 93.5  
Number of units retired   5,460,639  
Repurchase price (in dollars per unit)   $ 17.12  
Remaining authorized amount $ 6.5 $ 6.5  
v3.22.2.2
PARTNERS' CAPITAL - Change (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Increase (decrease) in Partners' Capital                
Balance at beginning of period $ 1,352,193 $ 1,233,393 $ 1,226,069 $ 1,134,520 $ 1,099,906 $ 1,072,267 $ 1,226,069 $ 1,072,267
Balance at beginning of period (in units)     127,195,219       127,195,219  
Comprehensive income (loss):                
Net income 164,971 161,801 $ 36,942 57,724 44,165 24,826 $ 363,714 126,715
Actuarially determined long-term liability adjustments 802 794 790 2,231 2,231 2,231 2,386 6,693
COMPREHENSIVE INCOME 165,773 162,595 37,732 59,955 46,396 27,057 366,100 133,408
Settlement of deferred compensation plans       (1,090)        
Common unit-based compensation 2,677 2,340 2,640 1,746 1,485 723    
Distributions on deferred common unit-based compensation (1,461) (1,292) (950) (323) (324)      
Distributions from consolidated company to noncontrolling interest (485) (325) (298) (252) (222) (141)    
Distributions to Partners (50,877) (44,518) (31,800) (12,718) (12,721)      
Balance at end of period $ 1,467,820 1,352,193 1,233,393 1,181,838 1,134,520 1,099,906 $ 1,467,820 1,181,838
Balance at end of period (in units) 127,195,219           127,195,219  
Accumulated Other Comprehensive Income (Loss)                
Increase (decrease) in Partners' Capital                
Balance at beginning of period $ (62,645) (63,439) (64,229) (83,212) (85,443) (87,674) $ (64,229) (87,674)
Comprehensive income (loss):                
Actuarially determined long-term liability adjustments 802 794 790 2,231 2,231 2,231    
Balance at end of period (61,843) (62,645) (63,439) (80,981) (83,212) (85,443) (61,843) (80,981)
Noncontrolling Interest                
Increase (decrease) in Partners' Capital                
Balance at beginning of period 11,105 11,107 11,115 11,221 11,313 11,376 11,115 11,376
Comprehensive income (loss):                
Net income 364 323 290 176 130 78    
Distributions from consolidated company to noncontrolling interest (485) (325) (298) (252) (222) (141)    
Balance at end of period 10,984 11,105 11,107 11,145 11,221 11,313 10,984 11,145
Limited Partners' Capital                
Increase (decrease) in Partners' Capital                
Balance at beginning of period $ 1,403,733 $ 1,285,725 $ 1,279,183 $ 1,206,511 $ 1,174,036 $ 1,148,565 $ 1,279,183 $ 1,148,565
Balance at beginning of period (in units) 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219
Comprehensive income (loss):                
Net income $ 164,607 $ 161,478 $ 36,652 $ 57,548 $ 44,035 $ 24,748    
Settlement of deferred compensation plans       (1,090)        
Common unit-based compensation 2,677 2,340 2,640 1,746 1,485 723    
Distributions on deferred common unit-based compensation (1,461) (1,292) (950) (323) (324)      
Distributions to Partners (50,877) (44,518) (31,800) (12,718) (12,721)      
Balance at end of period $ 1,518,679 $ 1,403,733 $ 1,285,725 $ 1,251,674 $ 1,206,511 $ 1,174,036 $ 1,518,679 $ 1,251,674
Balance at end of period (in units) 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219 127,195,219
v3.22.2.2
REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Disaggregation of revenues        
Revenues $ 628,420 $ 415,439 $ 1,705,784 $ 1,096,504
Illinois Basin        
Disaggregation of revenues        
Revenues 335,234 231,093 923,427 640,260
Appalachia        
Disaggregation of revenues        
Revenues 245,724 154,944 646,705 384,286
Oil & Gas Royalties        
Disaggregation of revenues        
Revenues 37,572 21,191 105,112 52,798
Coal Royalties        
Disaggregation of revenues        
Revenues 16,708 13,456 46,400 36,410
Other, Corporate and Elimination        
Disaggregation of revenues        
Revenues (6,818) (5,245) (15,860) (17,250)
Coal sales        
Disaggregation of revenues        
Revenues 550,563 362,264 1,470,730 975,725
Coal sales | Illinois Basin        
Disaggregation of revenues        
Revenues 314,271 217,637 858,565 610,435
Coal sales | Appalachia        
Disaggregation of revenues        
Revenues 236,292 144,627 612,165 365,290
Oil & gas royalties        
Disaggregation of revenues        
Revenues 35,312 20,109 102,166 51,222
Oil & gas royalties | Oil & Gas Royalties        
Disaggregation of revenues        
Revenues 35,312 20,109 102,166 51,222
Coal royalties | Coal Royalties        
Disaggregation of revenues        
Revenues 16,708 13,456 46,400 36,410
Coal royalties | Other, Corporate and Elimination        
Disaggregation of revenues        
Revenues (16,708) (13,456) (46,400) (36,410)
Transportation        
Disaggregation of revenues        
Revenues 28,548 22,027 93,305 45,153
Transportation | Illinois Basin        
Disaggregation of revenues        
Revenues 19,508 12,121 59,848 27,235
Transportation | Appalachia        
Disaggregation of revenues        
Revenues 9,040 9,906 33,457 17,918
Other revenues        
Disaggregation of revenues        
Revenues 13,997 11,039 39,583 24,404
Other revenues | Illinois Basin        
Disaggregation of revenues        
Revenues 1,455 1,335 5,014 2,590
Other revenues | Appalachia        
Disaggregation of revenues        
Revenues 392 411 1,083 1,078
Other revenues | Oil & Gas Royalties        
Disaggregation of revenues        
Revenues 2,260 1,082 2,946 1,576
Other revenues | Other, Corporate and Elimination        
Disaggregation of revenues        
Revenues $ 9,890 $ 8,211 $ 30,540 $ 19,160
v3.22.2.2
REVENUE FROM CONTRACTS WITH CUSTOMERS - Supply contracts (Details)
$ in Thousands
Sep. 30, 2022
USD ($)
Performance obligations unsatisfied or partially unsatisfied  
Total $ 3,341,114
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 678,706
Expected timing of satisfaction period 3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 1,225,359
Expected timing of satisfaction period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 800,051
Expected timing of satisfaction period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 636,998
Expected timing of satisfaction period 1 year
Illinois Basin  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 2,203,545
Illinois Basin | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 380,626
Expected timing of satisfaction period 3 months
Illinois Basin | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 853,006
Expected timing of satisfaction period 1 year
Illinois Basin | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 489,615
Expected timing of satisfaction period 1 year
Illinois Basin | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 480,298
Expected timing of satisfaction period 1 year
Appalachia  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 1,137,569
Appalachia | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 298,080
Expected timing of satisfaction period 3 months
Appalachia | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 372,353
Expected timing of satisfaction period 1 year
Appalachia | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 310,436
Expected timing of satisfaction period 1 year
Appalachia | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 156,700
Expected timing of satisfaction period 1 year
v3.22.2.2
EARNINGS PER LIMITED PARTNER UNIT - Reconciliation (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
EARNINGS PER LIMITED PARTNER UNIT        
Net income attributable to ARLP $ 164,607 $ 57,548 $ 362,737 $ 126,331
Distributions to participating securities (2,180) (765) (5,452) (1,384)
Undistributed earnings attributable to participating securities (3,275) (951) (6,504) (1,832)
Net income attributable to ARLP available to limited partners $ 159,152 $ 55,832 $ 350,781 $ 123,115
Weighted-average limited partner units outstanding - basic (in units) 127,195,219 127,195,219 127,195,219 127,195,219
Weighted-average limited partner units outstanding - diluted (in units) 127,195,000 127,195,000 127,195,000 127,195,000
Earnings per limited partner unit - basic (in dollars per unit) $ 1.25 $ 0.44 $ 2.76 $ 0.97
Earnings per limited partner unit - diluted (in dollars per unit) $ 1.25 $ 0.44 $ 2.76 $ 0.97
Anti-dilutive under the treasury stock method (in units) 3,754,000 2,328,000 3,431,000 1,706,000
v3.22.2.2
WORKERS' COMPENSATION AND PNEUMOCONIOSIS - Liability (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of changes in the workers' compensation liability            
Beginning balance $ 47,221 $ 52,059 $ 53,448 $ 54,739 $ 54,739  
Accruals increase 2,918 1,674 7,464 4,911    
Payments (2,856) (2,939) (8,938) (7,914)    
Interest accretion 287 232 861 695    
Valuation gain     (5,265) (1,405)    
Ending balance 47,570 $ 51,026 $ 47,570 $ 51,026 $ 53,448 $ 54,739
Estimated present value of future obligations and other information            
Workers' compensation discount rate     4.22% 2.34% 2.41% 1.95%
Other long-term assets            
Estimated present value of future obligations and other information            
Receivables for traumatic injury claims $ 5,700   $ 5,700      
v3.22.2.2
WORKERS' COMPENSATION AND PNEUMOCONIOSIS - Periodic Benefit Cost (Details) - Pneumoconiosis benefits - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Black lung benefits:        
Service cost $ 949 $ 1,007 $ 2,850 $ 3,027
Interest cost $ 747 $ 636 $ 2,243 $ 1,909
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Net amortization $ 260 $ 1,043 $ 779 $ 3,129
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Net periodic benefit cost $ 1,956 $ 2,686 $ 5,872 $ 8,065
v3.22.2.2
COMMON UNIT-BASED COMPENSATION PLANS - LTIP Grants (Details) - ARLP LTIP - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Number of units    
Balance at the beginning of the period (in units) 3,130,475  
Granted (in units) 769,907  
Forfeited (in units) (200,119)  
Balance at the end of the period (in units) 3,700,263  
Weighted average grant date fair value per unit    
Balance at the beginning of the period (in dollars per unit) $ 5.59  
Granted (in dollars per unit) 14.65  
Forfeited (in dollars per unit) 6.96  
Balance at the end of the period (in dollars per unit) $ 7.40  
Intrinsic value (in dollars)    
Intrinsic value of outstanding grants (in dollars) $ 84,736 $ 39,569
v3.22.2.2
COMMON UNIT-BASED COMPENSATION PLANS - LTIP Other (Details) - ARLP LTIP - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Other information        
Unit-based compensation expense $ 2.4 $ 1.7 $ 6.8 $ 3.8
Total unit-based obligation recorded 13.4   13.4  
Unrecognized compensation expense (in dollars) $ 14.0   $ 14.0  
Weighted-average period for recognition of expense     1 year 1 month 6 days  
v3.22.2.2
COMMON UNIT-BASED COMPENSATION PLANS - SERP and Directors Comp (Details) - SERP and Deferred Compensation Plans - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Other information          
Unit-based compensation expense $ 400 $ 100 $ 900 $ 300  
Total unit-based obligation recorded $ 14,300   $ 14,300    
Phantom Share Units (PSUs)          
Number of units          
Balance at the beginning of the period (in units)     668,698    
Granted (in units)     37,758    
Balance at the end of the period (in units) 706,456   706,456    
Weighted average grant date fair value per unit          
Balance at the beginning of the period (in dollars per unit)     $ 20.37    
Granted (in dollars per unit)     18.25    
Balance at the end of the period (in dollars per unit) $ 20.26   $ 20.26    
Intrinsic value of outstanding grants (in dollars) $ 16,178   $ 16,178   $ 8,452
v3.22.2.2
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS (Details) - Defined benefit pension plan - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Components of net periodic benefit cost:        
Interest cost $ 940 $ 860 $ 2,808 $ 2,580
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Expected return on plan assets $ (1,654) $ (1,671) $ (4,983) $ (5,013)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Amortization of prior service cost $ 47 $ 47 $ 140 $ 140
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Amortization of net loss $ 495 $ 1,141 $ 1,467 $ 3,424
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Net periodic benefit cost $ (172) $ 377 $ (568) $ 1,131
v3.22.2.2
SEGMENT INFORMATION - General (Details)
 9 Months Ended
Sep. 30, 2022
segment
SEGMENT INFORMATION  
Number of reportable segments 4
Number Of Coal Reportable Segments 2
Number Of Mining Complex 7
v3.22.2.2
SEGMENT INFORMATION - Segment Results (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Reportable segment results          
Revenues $ 628,420 $ 415,439 $ 1,705,784 $ 1,096,504  
Segment Adjusted EBITDA Expense 330,106 239,350 907,360 651,571  
Segment Adjusted EBITDA 271,510 154,589 708,718 400,502  
Total assets 2,504,381 2,148,975 2,504,381 2,148,975 $ 2,159,406
Capital expenditures 99,304 33,035 221,286 88,661  
Illinois Basin          
Reportable segment results          
Revenues 335,234 231,093 923,427 640,260  
Segment Adjusted EBITDA Expense 194,967 149,666 567,253 415,423  
Segment Adjusted EBITDA 120,760 69,305 296,327 197,601  
Total assets 731,441 703,060 731,441 703,060  
Capital expenditures 39,529 19,081 111,419 47,997  
Appalachia          
Reportable segment results          
Revenues 245,724 154,944 646,705 384,286  
Segment Adjusted EBITDA Expense 134,672 92,312 335,756 240,494  
Segment Adjusted EBITDA 102,012 52,726 277,492 125,873  
Total assets 428,000 422,504 428,000 422,504  
Capital expenditures 17,780 12,531 58,616 34,579  
Oil & Gas Royalties          
Reportable segment results          
Revenues 37,572 21,191 105,112 52,798  
Segment Adjusted EBITDA Expense 3,531 2,639 9,766 7,116  
Segment Adjusted EBITDA 35,783 19,080 98,944 46,405  
Total assets 689,874 601,695 689,874 601,695  
Coal Royalties          
Reportable segment results          
Revenues 16,708 13,456 46,400 36,410  
Segment Adjusted EBITDA Expense 5,545 4,258 15,762 13,157  
Segment Adjusted EBITDA 11,163 9,198 30,638 23,253  
Total assets 325,498 289,100 325,498 289,100  
Capital expenditures 40,033 30 40,033 30  
Other, Corporate and Elimination          
Reportable segment results          
Revenues (6,818) (5,245) (15,860) (17,250)  
Segment Adjusted EBITDA Expense (8,609) (9,525) (21,177) (24,619)  
Segment Adjusted EBITDA 1,792 4,280 5,317 7,370  
Total assets 329,569 132,616 329,569 132,616  
Capital expenditures 1,962 1,393 11,218 6,055  
Operating segments          
Reportable segment results          
Revenues 628,420 415,439 1,705,784 1,096,504  
Operating segments | Illinois Basin          
Reportable segment results          
Revenues 335,234 231,093 923,427 640,260  
Operating segments | Appalachia          
Reportable segment results          
Revenues 245,724 154,944 646,705 384,286  
Operating segments | Oil & Gas Royalties          
Reportable segment results          
Revenues 37,572 21,191 105,112 52,798  
Operating segments | Other, Corporate and Elimination          
Reportable segment results          
Revenues 9,890 8,211 30,540 19,160  
Elimination | Coal Royalties          
Reportable segment results          
Revenues 16,708 13,456 46,400 36,410  
Elimination | Other, Corporate and Elimination          
Reportable segment results          
Revenues $ (16,708) $ (13,456) $ (46,400) $ (36,410)  
v3.22.2.2
SEGMENT INFORMATION - EBITDA Expense Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Reconciliation of consolidated Segment Adjusted EBITDA Expense        
Segment Adjusted EBITDA Expense $ 330,106 $ 239,350 $ 907,360 $ 651,571
Outside coal purchases   (6,065) (151) (6,179)
Other income (expense) 192 (84) 1,337 (2,632)
Product        
Reconciliation of consolidated Segment Adjusted EBITDA Expense        
Operating expenses (excluding depreciation, depletion and amortization) $ 330,298 $ 233,201 $ 908,546 $ 642,760
v3.22.2.2
SEGMENT INFORMATION - EBITDA Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Reconciliation of consolidated Segment Adjusted EBITDA to net income                
Consolidated Segment Adjusted EBITDA $ 271,510     $ 154,589     $ 708,718 $ 400,502
General and administrative (21,341)     (18,655)     (62,394) (51,651)
Depreciation, depletion and amortization (70,143)     (68,763)     (200,191) (192,698)
Interest expense, net (8,819)     (9,389)     (27,750) (29,595)
Income tax expense (6,600)     (234)     (55,646) (227)
NET INCOME ATTRIBUTABLE TO ARLP 164,607     57,548     362,737 126,331
Noncontrolling interest 364     176     977 384
NET INCOME $ 164,971 $ 161,801 $ 36,942 $ 57,724 $ 44,165 $ 24,826 $ 363,714 $ 126,715
v3.22.2.2
SUBSEQUENT EVENTS (Details)
$ in Thousands
 9 Months Ended
Oct. 26, 2022
USD ($)
a
Sep. 30, 2022
USD ($)
Subsequent Event    
Payments for acquisitions of businesses   $ 11,391
Subsequent event | Jase    
Subsequent Event    
Royalty acres, net | a 3,928  
Payments for acquisitions of businesses $ 81,200