ALLIANCE RESOURCE PARTNERS LP, 10-Q filed on 5/9/2022
Quarterly Report
v3.22.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2022
May 09, 2022
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 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 Q1  
Amendment Flag false  
v3.22.1
CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
CURRENT ASSETS:    
Cash and cash equivalents $ 128,191 $ 122,403
Trade receivables 156,698 129,531
Other receivables 440 680
Inventories, net 95,745 60,302
Advance royalties 4,385 4,958
Prepaid expenses and other assets 19,238 21,354
Total current assets 404,697 339,228
PROPERTY, PLANT AND EQUIPMENT:    
Property, plant and equipment, at cost 3,666,987 3,608,347
Less accumulated depreciation, depletion and amortization (1,975,381) (1,909,669)
Total property, plant and equipment, net 1,691,606 1,698,678
OTHER ASSETS:    
Advance royalties 71,403 63,524
Equity method investments 26,194 26,325
Goodwill 4,373 4,373
Operating lease right-of-use assets 15,165 14,158
Other long-term assets 12,109 13,120
Total other assets 129,244 121,500
TOTAL ASSETS 2,225,547 2,159,406
CURRENT LIABILITIES:    
Accounts payable 92,904 69,586
Accrued taxes other than income taxes 15,209 17,787
Accrued payroll and related expenses 31,178 36,805
Accrued interest 12,500 5,000
Workers' compensation and pneumoconiosis benefits 12,293 12,293
Current finance lease obligations 665 840
Current operating lease obligations 2,133 1,820
Other current liabilities 19,815 17,375
Current maturities, long-term debt, net 15,359 16,071
Total current liabilities 202,056 177,577
LONG-TERM LIABILITIES:    
Long-term debt, excluding current maturities, net 415,990 418,942
Pneumoconiosis benefits 108,491 107,560
Accrued pension benefit 24,857 25,590
Workers' compensation 44,669 44,911
Asset retirement obligations 123,989 123,517
Long-term finance lease obligations 590 618
Long-term operating lease obligations 13,009 12,366
Deferred income tax liabilities 37,621 391
Other liabilities 20,882 21,865
Total long-term liabilities 790,098 755,760
Total liabilities 992,154 933,337
COMMITMENTS AND CONTINGENCIES - (Note 3)
ARLP Partners' Capital:    
Limited Partners - Common Unitholders 127,195,219 units outstanding 1,285,725 1,279,183
Accumulated other comprehensive loss (63,439) (64,229)
Total ARLP Partners' Capital 1,222,286 1,214,954
Noncontrolling interest 11,107 11,115
Total Partners' Capital 1,233,393 1,226,069
TOTAL LIABILITIES AND PARTNERS' CAPITAL $ 2,225,547 $ 2,159,406
v3.22.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Mar. 31, 2022
Dec. 31, 2021
CONDENSED CONSOLIDATED BALANCE SHEETS    
Common units outstanding 127,195,219 127,195,219
v3.22.1
CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
SALES AND OPERATING REVENUES:    
Revenues $ 460,863 $ 318,622
EXPENSES:    
General and administrative 18,596 15,504
Depreciation, depletion and amortization 63,314 59,202
Total operating expenses 373,028 282,294
INCOME FROM OPERATIONS 87,835 36,328
Interest expense (net of interest capitalized for the three months ended March 31, 2022 and 2021 of $70 and $86, respectively) (9,662) (10,396)
Interest income 35 17
Equity method investment income 883 62
Other income (expense) 566 (1,197)
INCOME BEFORE INCOME TAXES 79,657 24,814
INCOME TAX EXPENSE (BENEFIT) 42,715 (12)
NET INCOME 36,942 24,826
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTEREST (290) (78)
NET INCOME ATTRIBUTABLE TO ARLP $ 36,652 $ 24,748
EARNINGS PER LIMITED PARTNER UNIT - BASIC (in dollars per unit) $ 0.28 $ 0.19
EARNINGS PER LIMITED PARTNER UNIT - DILUTED (in dollars per unit) $ 0.28 $ 0.19
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - BASIC (in units) 127,195,219 127,195,219
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - DILUTED (in units) 127,195,000 127,195,000
Product    
EXPENSES:    
Operating expenses (excluding depreciation, depletion and amortization) $ 261,746 $ 196,520
Coal sales    
SALES AND OPERATING REVENUES:    
Revenues 388,360 287,487
Oil & gas royalties    
SALES AND OPERATING REVENUES:    
Revenues 30,927 13,999
Transportation    
SALES AND OPERATING REVENUES:    
Revenues 29,372 11,068
EXPENSES:    
Operating expenses (excluding depreciation, depletion and amortization) 29,372 11,068
Other revenues    
SALES AND OPERATING REVENUES:    
Revenues $ 12,204 $ 6,068
v3.22.1
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF INCOME    
Interest expense, interest capitalized $ 70 $ 86
v3.22.1
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
NET INCOME $ 36,942 $ 24,826
OTHER COMPREHENSIVE INCOME:    
OTHER COMPREHENSIVE INCOME 790 2,231
COMPREHENSIVE INCOME 37,732 27,057
Less: Comprehensive income attributable to noncontrolling interest (290) (78)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ARLP 37,442 26,979
Defined benefit pension plan    
OTHER COMPREHENSIVE INCOME:    
Amortization of prior service cost 47 47
Amortization of net actuarial loss 483 1,141
Total recognized in accumulated other comprehensive loss 530 1,188
Pneumoconiosis benefits    
OTHER COMPREHENSIVE INCOME:    
Amortization of net actuarial loss 260 1,043
Total recognized in accumulated other comprehensive loss $ 260 $ 1,043
v3.22.1
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended 4 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
May 13, 2022
Dec. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS        
CASH FLOWS FROM OPERATING ACTIVITIES $ 89,036 $ 54,647    
Property, plant and equipment:        
Capital expenditures (59,153) (31,437)    
Increase in accounts payable and accrued liabilities 13,551 7,200    
Proceeds from sale of property, plant and equipment 928 1,139    
Distributions received from investments in excess of cumulative earnings 131 361    
Other (982)      
Net cash used in investing activities (45,525) (22,737)    
CASH FLOWS FROM FINANCING ACTIVITIES:        
Payments under securitization facility   (17,800)    
Payments on equipment financings (4,472) (4,239)    
Borrowings under revolving credit facilities   10,000    
Payments under revolving credit facilities   (42,500)    
Borrowings from line of credit   1,830    
Payments on finance lease obligations (203) (185)    
Payment of debt issuance costs   (6)    
Distributions paid to Partners (32,750)   $ (32,750) $ (52,158)
Other (298) (141)    
Net cash used in financing activities (37,723) (53,041)    
NET CHANGE IN CASH AND CASH EQUIVALENTS 5,788 (21,131)    
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 122,403 55,574 $ 122,403 55,574
CASH AND CASH EQUIVALENTS AT END OF PERIOD 128,191 34,443   $ 122,403
SUPPLEMENTAL CASH FLOW INFORMATION:        
Cash paid for interest 1,254 2,094    
SUPPLEMENTAL NON-CASH ACTIVITY:        
Accounts payable for purchase of property, plant and equipment 21,876 $ 12,931    
Right-of-use assets acquired by operating lease $ 99      
v3.22.1
ORGANIZATION AND PRESENTATION
 3 Months Ended
Mar. 31, 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 7 – Income Taxes.

​

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 March 31, 2022 and December 31, 2021 and the results of our operations, comprehensive income and cash flows for the three months ended March 31, 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.

v3.22.1
NEW ACCOUNTING STANDARDS
 3 Months Ended
Mar. 31, 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.
v3.22.1
CONTINGENCIES
 3 Months Ended
Mar. 31, 2022
CONTINGENCIES  
CONTINGENCIES

3.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.
v3.22.1
INVENTORIES
 3 Months Ended
Mar. 31, 2022
INVENTORIES  
INVENTORIES

4.INVENTORIES

​

Inventories consist of the following:

​

​

​

​

​

​

​

​

​

​

    

March 31, 

​

December 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

Coal

​

$

56,084

​

$

24,845

​

Supplies (net of reserve for obsolescence of $5,571 and $5,554, respectively)

​

 

39,661

​

 

35,457

​

Total inventories, net

​

$

95,745

​

$

60,302

​

​
v3.22.1
FAIR VALUE MEASUREMENTS
 3 Months Ended
Mar. 31, 2022
FAIR VALUE MEASUREMENTS  
FAIR VALUE MEASUREMENTS

5.FAIR VALUE MEASUREMENTS

​

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

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

March 31, 2022

​

December 31, 2021

​

​

    

Level 1

    

Level 2

    

Level 3

    

Level 1

    

Level 2

    

Level 3

 

​

​

(in thousands)

​

Long-term debt

​

$

—

​

$

438,553

​

$

—

​

$

—

​

$

457,758

​

$

—

​

Total

​

$

—

​

$

438,553

​

$

—

​

$

—

​

$

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 6 – 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.
v3.22.1
LONG-TERM DEBT
 3 Months Ended
Mar. 31, 2022
LONG-TERM DEBT  
LONG-TERM DEBT

6.LONG-TERM DEBT

​

Long-term debt consists of the following:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unamortized Discount and

​

​

​

Principal

​

Debt Issuance Costs

​

​

​

March 31, 

​

December 31, 

​

March 31, 

​

December 31, 

​

​

    

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Revolving credit facility

​

$

—

​

$

—

​

$

(4,441)

​

$

(5,019)

​

Senior notes

​

 

400,000

​

 

400,000

​

 

(2,820)

​

 

(3,048)

​

Securitization facility

​

​

—

​

​

—

​

​

—

​

​

—

​

May 2019 equipment financing

​

​

606

​

​

1,503

​

​

—

​

​

—

​

November 2019 equipment financing

​

​

29,295

​

​

31,972

​

​

—

​

​

—

​

June 2020 equipment financing

​

​

8,709

​

​

9,605

​

​

—

​

​

—

​

​

​

 

438,610

​

 

443,080

​

 

(7,261)

​

 

(8,067)

​

Less current maturities

​

 

(15,359)

​

 

(16,071)

​

 

—

​

 

—

​

Total long-term debt

​

$

423,251

​

$

427,009

​

$

(7,261)

​

$

(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 2.80% as of March 31, 2022.  On March 31, 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 0.88 to 1.0, 12.91 to 1.0 and 0.09 to 1.0, respectively, for the trailing twelve months ended March 31, 2022.  We remained in compliance with the covenants of the Credit Agreement as of March 31, 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 Eurodollar Rate.  The agreement governing the Securitization Facility contains customary terms and conditions, including limitations with regards to certain customer credit ratings.  In January 2022, we extended the term of the Securitization Facility to January 2023.  The Securitization Facility was previously scheduled to mature in January 2022.  On March 31, 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 contains customary terms and events of default and provides 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.
v3.22.1
INCOME TAXES
 3 Months Ended
Mar. 31, 2022
INCOME TAXES  
INCOME TAXES

7.INCOME TAXES

​

Components of income tax expense (benefit) are as follows:

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended March 31, 

 

​

​

2022

    

2021

 

​

​

(in thousands)

​

Current:

​

​

​

​

​

​

​

Federal

​

$

5,034

​

$

(1)

​

State

​

 

386

​

 

—

​

​

​

 

5,420

​

 

(1)

​

Deferred:

​

​

​

​

​

​

​

Federal

​

 

34,920

​

 

(11)

​

State

​

 

2,375

​

 

—

​

​

​

 

37,295

​

 

(11)

​

Income tax expense (benefit)

​

$

42,715

​

$

(12)

​

​

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 three months ended March 31, 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 three months ended March 31, 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 March 31, 

 

​

    

2022

    

2021

 

​

​

(in thousands)

​

Income taxes at statutory rate

​

$

16,728

​

$

5,211

​

​

​

​

​

​

​

​

​

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

​

 

(12,087)

​

 

(5,033)

​

​

​

​

​

​

​

​

​

Increase (decrease) resulting from:

​

​

​

​

​

​

​

State taxes, net of federal income tax

​

 

361

​

 

38

​

Change in valuation allowance of deferred tax assets

​

 

(10)

​

 

(163)

​

Deferred taxes related to tax election

​

​

37,253

​

​

—

​

Other

​

 

470

​

 

(65)

​

Income tax expense (benefit)

​

$

42,715

​

$

(12)

​

​

The effective income tax rate for our income tax expense for the three months ended March 31, 2022 is greater than the federal statutory rate, primarily due to the effect of the Tax Election previously discussed, partially offset by the portion of income not subject to income taxes. The effective income tax rate for our income tax benefit for the three months ended March 31, 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:

​

​

​

​

​

​

​

​

​

​

​

March 31, 

​

December 31, 

 

​

    

2022

    

2021

 

​

​

(in thousands)

​

Deferred tax liabilities:

​

​

​

​

​

​

​

Property, plant and equipment

​

$

(40,119)

​

$

(2,169)

​

Total deferred tax liabilities

​

​

(40,119)

​

​

(2,169)

​

​

​

​

​

​

​

​

​

Deferred tax assets:

​

​

​

​

​

​

​

Federal loss carryovers and credits

​

​

2,071

​

​

1,328

​

Other

​

 

735

​

 

808

​

Total deferred tax assets

​

​

2,806

​

​

2,136

​

Less valuation allowance

​

​

(307)

​

​

(317)

​

Net deferred tax assets

​

​

2,499

​

​

1,819

​

​

​

​

​

​

​

​

​

Overall net deferred tax liabilities

​

$

(37,620)

​

$

(350)

​

​

The change in deferred tax liabilities for property, plant and equipment is primarily as a result 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 March 31, 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 2018 through 2021 tax years remain open to examination by tax authorities.
v3.22.1
VARIABLE INTEREST ENTITIES
 3 Months Ended
Mar. 31, 2022
VARIABLE INTEREST ENTITIES  
VARIABLE INTEREST ENTITIES

8.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

​

​

117,162

​

​

4,881

​

​

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 1) not having the ability to remove the general partner and 2) 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 9 – Investment for more information.
v3.22.1
INVESTMENT
 3 Months Ended
Mar. 31, 2022
INVESTMENT  
INVESTMENT

9.INVESTMENT

​

AllDale III

​

As discussed in Note 8 – Variable Interest Entities, 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.  The changes in our equity method investment in AllDale III for each of the periods presented were as follows:

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

​

​

March 31, 

​

​

    

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

26,325

​

$

27,268

​

Equity method investment income

​

​

883

​

​

62

​

Distributions received

​

​

(1,014)

​

​

(423)

​

Ending balance

​

$

26,194

​

$

26,907

​

​
v3.22.1
PARTNERS' CAPITAL
 3 Months Ended
Mar. 31, 2022
PARTNERS' CAPITAL  
PARTNERS' CAPITAL

10.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 (1)

​

​

0.3500

​

​

—

​

Total

​

$

0.6000

​

$

32,750

​

(1)On April 26, 2022, we declared this quarterly distribution payable on May 13, 2022 to all unitholders of record as of May 6, 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 three months ended March 31, 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 three months ended March 31, 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

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

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

​

​
v3.22.1
REVENUE FROM CONTRACTS WITH CUSTOMERS
 3 Months Ended
Mar. 31, 2022
REVENUE FROM CONTRACTS WITH CUSTOMERS  
REVENUE FROM CONTRACTS WITH CUSTOMERS

11.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 16 – Segment Information.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

    

Coal Operations

​

Royalties

​

Other,

​

​

​

​

​

​

Illinois

    

​

    

​

​

​

    

Corporate and

    

​

​

​

​

    

Basin

    

Appalachia

    

Oil & Gas

    

Coal

    

Elimination

    

Consolidated

​

​

​

(in thousands)

​

Three Months Ended March 31, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

253,905

​

$

134,455

​

$

—

​

$

—

​

$

—

​

$

388,360

​

Oil & gas royalties

​

​

—

​

​

—

​

​

30,927

​

​

—

​

​

—

​

​

30,927

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

15,167

​

​

(15,167)

​

​

—

​

Transportation revenues

​

​

18,891

​

​

10,481

​

​

—

​

​

—

​

​

—

​

​

29,372

​

Other revenues

​

​

1,900

​

​

363

​

​

34

​

​

—

​

​

9,907

​

​

12,204

​

Total revenues

​

$

274,696

​

$

145,299

​

$

30,961

​

$

15,167

​

$

(5,260)

​

$

460,863

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended March 31, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

182,641

​

$

104,846

​

$

—

​

$

—

​

$

—

​

$

287,487

​

Oil & gas royalties

​

​

—

​

​

—

​

​

13,999

​

​

—

​

​

—

​

​

13,999

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

11,301

​

​

(11,301)

​

​

—

​

Transportation revenues

​

​

7,680

​

​

3,388

​

​

—

​

​

—

​

​

—

​

​

11,068

​

Other revenues

​

​

613

​

​

385

​

​

21

​

​

—

​

​

5,049

​

​

6,068

​

Total revenues

​

$

190,934

​

$

108,619

​

$

14,020

​

$

11,301

​

$

(6,252)

​

$

318,622

​

​

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 March 31, 2022 and disaggregated by segment and contract duration.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

2025 and

​

​

​

    

2022

    

2023

    

2024

    

Thereafter

    

Total

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Illinois Basin Coal Operations coal revenues

​

$

835,565

​

$

467,537

​

$

244,936

​

$

35,747

​

$

1,583,785

Appalachia Coal Operations coal revenues

​

​

436,639

​

​

235,295

​

​

136,936

​

​

—

​

​

808,870

Total coal revenues (1)

​

$

1,272,204

​

$

702,832

​

$

381,872

​

$

35,747

​

$

2,392,655

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

v3.22.1
EARNINGS PER LIMITED PARTNER UNIT
 3 Months Ended
Mar. 31, 2022
EARNINGS PER LIMITED PARTNER UNIT  
EARNINGS PER LIMITED PARTNER UNIT

12.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 months ended March 31, 2022 and 2021:

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

​

​

March 31, 

​

​

    

2022

    

2021

    

​

​

(in thousands, except per unit data)

​

Net income attributable to ARLP

​

$

36,652

​

$

24,748

​

​

​

​

​

​

​

​

​

Less:

​

​

​

​

​

​

​

Distributions to participating securities

​

 

(1,552)

​

 

(218)

​

Undistributed earnings attributable to participating securities

​

 

—

​

 

(200)

​

​

​

​

​

​

​

​

​

Net income attributable to ARLP available to limited partners

​

$

35,100

​

$

24,330

​

​

​

​

​

​

​

​

​

Weighted-average limited partner units outstanding – basic and diluted

​

 

127,195

​

 

127,195

​

​

​

​

​

​

​

​

​

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

​

$

0.28

​

$

0.19

​

(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 3,139 and 1,237 for the three months ended March 31, 2022 and 2021, respectively, were considered anti-dilutive under the treasury stock method.
v3.22.1
WORKERS' COMPENSATION AND PNEUMOCONIOSIS
 3 Months Ended
Mar. 31, 2022
WORKERS' COMPENSATION AND PNEUMOCONIOSIS  
WORKERS' COMPENSATION AND PNEUMOCONIOSIS

13.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

 

​

​

March 31, 

​

​

​

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

53,448

​

$

54,739

​

Accruals increase

​

 

2,275

​

 

1,672

​

Payments

​

 

(2,804)

​

 

(2,410)

​

Interest accretion

​

 

287

​

 

232

​

Ending balance

​

$

53,206

​

$

54,233

​

​

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 March 31, 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

​

​

​

March 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

Service cost

​

$

947

​

$

1,031

 

Interest cost (1)

​

 

747

​

 

636

​

Net amortization (1)

​

 

260

​

 

1,043

​

Net periodic benefit cost

​

$

1,954

​

$

2,710

​

(1)Interest cost and net amortization are included in the Other income (expense) line item within our condensed consolidated statements of income.
v3.22.1
COMMON UNIT-BASED COMPENSATION PLANS
 3 Months Ended
Mar. 31, 2022
COMMON UNIT-BASED COMPENSATION PLANS  
COMMON UNIT-BASED COMPENSATION PLANS

14.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 any 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 three months ended March 31, 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)

 

687,719

​

​

13.34

​

​

​

​

Forfeited

 

(17,063)

​

 

5.25

​

​

​

​

Non-vested grants at March 31, 2022

 

3,801,131

​

 

6.99

​

​

57,926

​

(1)The restricted units granted during 2022 have minimum-value guarantees of either $9.62 or $6.41 per unit, regardless of whether or not the awards vest.

​

LTIP expense for grants of restricted units was $2.3 million and $0.7 million for the three months ended March 31, 2022 and 2021, respectively.  The total obligation associated with LTIP grants of restricted units as of March 31, 2022 was $9.0 million and is included in the partners' capital Limited partners-common unitholders line item in our condensed consolidated balance sheets.  As of March 31, 2022, there was $17.6 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 1.6 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 three months ended March 31, 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

​

12,370

​

​

13.61

​

​

​

​

Phantom units outstanding as of March 31, 2022

 

681,068

​

 

20.25

​

​

10,509

​

​

Total SERP and Directors' Deferred Compensation Plan expense was $0.2 million and $0.04 million for the three months ended March 31, 2022 and 2021, respectively.  As of March 31, 2022, the total obligation associated with the SERP and Directors' Deferred Compensation Plan was $13.8 million and is included in the partners' capital Limited partners-common unitholders line item in our condensed consolidated balance sheets.
v3.22.1
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS
 3 Months Ended
Mar. 31, 2022
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS  
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS

15.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

​

​

​

March 31, 

​

​

​

2022

    

2021

    

​

​

(in thousands)

​

Interest cost

​

$

932

​

$

860

​

Expected return on plan assets

​

 

(1,665)

​

 

(1,671)

​

Amortization of prior service cost

​

​

47

​

​

47

​

Amortization of net loss

​

 

483

​

 

1,141

​

Net periodic benefit cost (1)

​

$

(203)

​

$

377

​

(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.
v3.22.1
SEGMENT INFORMATION
 3 Months Ended
Mar. 31, 2022
SEGMENT INFORMATION  
SEGMENT INFORMATION

16.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 ("Gibson") mining complex, which includes the Gibson South mine, (b) the Warrior Coal, LLC ("Warrior") mining complex, (c) the River View Coal, LLC ("River View") mining complex and (d) the Hamilton County Coal, LLC ("Hamilton") mining complex. The segment also includes our Mt. Vernon Transfer Terminal, LLC ("Mt. Vernon") coal-loading terminal in Indiana which operates on the Ohio River, Mid-America Carbonates, LLC ("MAC") 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 ("Tunnel Ridge") mining complex and (c) the MC Mining, LLC ("MC Mining") mining complex. The Mettiki mining complex includes Mettiki Coal (WV), LLC's Mountain View mine and Mettiki Coal, LLC's preparation plant.  

​

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 9 – Investment) 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 and its subsidiaries ("Matrix Design"), Alliance Design Group, LLC ("Alliance Design") (collectively, Matrix Design and Alliance Design referred to as the "Matrix Group"), Pontiki Coal, LLC's workers' compensation and pneumoconiosis liabilities, Wildcat Insurance, LLC ("Wildcat Insurance"), which assists the ARLP Partnership with its insurance requirements, AROP Funding and Alliance Finance (both discussed in Note 6 – Long-Term Debt) 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 March 31, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

274,696

​

$

145,299

​

$

30,961

​

$

—

​

$

9,907

​

$

460,863

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

15,167

​

​

(15,167)

​

​

—

​

Total revenues (1)

​

​

274,696

​

​

145,299

​

​

30,961

​

​

15,167

​

​

(5,260)

​

​

460,863

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

177,589

​

​

83,715

​

​

3,001

​

​

4,819

​

​

(7,944)

​

 

261,180

​

Segment Adjusted EBITDA (3)

​

 

78,215

​

​

51,103

​

​

28,552

​

​

10,348

​

​

2,686

​

 

170,904

​

Total assets

​

 

704,627

​

​

425,929

​

​

650,794

​

​

291,153

​

​

153,044

​

 

2,225,547

​

Capital expenditures

​

 

36,547

​

​

18,345

​

​

—

​

​

—

​

​

4,261

​

 

59,153

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended March 31, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

190,934

​

$

108,619

​

$

14,020

​

$

—

​

$

5,049

​

$

318,622

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

11,301

​

​

(11,301)

​

​

—

​

Total revenues (1)

​

​

190,934

​

​

108,619

​

​

14,020

​

​

11,301

​

​

(6,252)

​

​

318,622

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

125,581

​

​

73,726

​

​

2,058

​

​

4,028

​

​

(7,676)

​

 

197,717

​

Segment Adjusted EBITDA (3)

​

 

57,673

​

​

31,506

​

​

11,946

​

​

7,273

​

​

1,423

​

 

109,821

​

Total assets

​

 

740,945

​

​

442,595

​

​

609,108

​

​

294,333

​

​

64,199

​

 

2,151,180

​

Capital expenditures

​

 

16,401

​

​

11,666

​

​

—

​

​

—

​

​

3,370

​

 

31,437

​

(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

​

​

​

March 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

Segment Adjusted EBITDA Expense

​

$

261,180

​

$

197,717

​

Other income (expense)

​

 

566

​

 

(1,197)

​

Operating expenses (excluding depreciation, depletion and amortization)

​

$

261,746

​

$

196,520

​

​

(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

​

​

​

March 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

Consolidated Segment Adjusted EBITDA

​

$

170,904

​

$

109,821

​

General and administrative

​

 

(18,596)

​

 

(15,504)

​

Depreciation, depletion and amortization

​

 

(63,314)

​

 

(59,202)

​

Interest expense, net

​

 

(9,627)

​

 

(10,379)

​

Income tax (expense) benefit

​

 

(42,715)

​

 

12

​

Net income attributable to ARLP

​

$

36,652

​

$

24,748

​

Noncontrolling interest

​

​

290

​

​

78

​

Net income

​

$

36,942

​

$

24,826

​

​
v3.22.1
SUBSEQUENT EVENTS
 3 Months Ended
Mar. 31, 2022
SUBSEQUENT EVENTS  
SUBSEQUENT EVENTS

17.SUBSEQUENT EVENTS

​

Francis

​

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, subject to adjustment in certain circumstances, which when completed will make us the second largest shareholder in Francis.  Francis currently is active in the installation, management and operation of metered-for-fee, public-access electric vehicle (“EV”) charging stations. Founded in 2015 and based in Tulsa, Oklahoma, Francis is a leading operator of EV chargers in the state of Oklahoma with plans to service states across the Midwest and Eastern U.S.  Francis also develops and constructs EV charging stations for third-party customers. Francis’ goal is to provide EV drivers convenient, affordable, easy to use public access to charging stations.   Our investment in Francis furthers our business strategy to develop strategic relationships to invest in attractive opportunities in the fast-growing energy infrastructure transition.

​

We funded our first commitment payment of $20 million on April 5, 2022, in the form of a convertible note with a maturity date of April 1, 2023.  The note converts into preferred equity interests in Francis at maturity, or any time prior at our option.  We have determined the note more closely represents equity as opposed to debt.  Therefore, we will account for the convertible note as an equity method investment although we will not participate in Francis’ earnings or losses and will not be eligible to receive distributions until the note converts.  We have options exercisable over the next 12 months to acquire the remaining preferred equity interests as part of our investment.

​

Infinitum

​

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. We plan to account for our ownership interest in Infinitum as an equity investment without a readily determinable fair value, wherein we use a measurement alternative other than fair value, because it is not practicable to estimate the fair value due to the lack of a quoted market price for our ownership interests.
v3.22.1
ORGANIZATION AND PRESENTATION (Policies)
 3 Months Ended
Mar. 31, 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 7 – Income Taxes.

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 March 31, 2022 and December 31, 2021 and the results of our operations, comprehensive income and cash flows for the three months ended March 31, 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.
v3.22.1
INVENTORIES (Tables)
 3 Months Ended
Mar. 31, 2022
INVENTORIES  
Schedule of inventories

​

​

​

​

​

​

​

​

​

​

    

March 31, 

​

December 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

​

​

​

​

​

​

​

​

Coal

​

$

56,084

​

$

24,845

​

Supplies (net of reserve for obsolescence of $5,571 and $5,554, respectively)

​

 

39,661

​

 

35,457

​

Total inventories, net

​

$

95,745

​

$

60,302

​
v3.22.1
FAIR VALUE MEASUREMENTS (Tables)
 3 Months Ended
Mar. 31, 2022
FAIR VALUE MEASUREMENTS  
Summary of fair value measurements within the hierarchy

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

March 31, 2022

​

December 31, 2021

​

​

    

Level 1

    

Level 2

    

Level 3

    

Level 1

    

Level 2

    

Level 3

 

​

​

(in thousands)

​

Long-term debt

​

$

—

​

$

438,553

​

$

—

​

$

—

​

$

457,758

​

$

—

​

Total

​

$

—

​

$

438,553

​

$

—

​

$

—

​

$

457,758

​

$

—

​
v3.22.1
LONG-TERM DEBT (Tables)
 3 Months Ended
Mar. 31, 2022
LONG-TERM DEBT  
Schedule of long-term debt

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Unamortized Discount and

​

​

​

Principal

​

Debt Issuance Costs

​

​

​

March 31, 

​

December 31, 

​

March 31, 

​

December 31, 

​

​

    

2022

    

2021

    

2022

    

2021

 

​

​

(in thousands)

​

Revolving credit facility

​

$

—

​

$

—

​

$

(4,441)

​

$

(5,019)

​

Senior notes

​

 

400,000

​

 

400,000

​

 

(2,820)

​

 

(3,048)

​

Securitization facility

​

​

—

​

​

—

​

​

—

​

​

—

​

May 2019 equipment financing

​

​

606

​

​

1,503

​

​

—

​

​

—

​

November 2019 equipment financing

​

​

29,295

​

​

31,972

​

​

—

​

​

—

​

June 2020 equipment financing

​

​

8,709

​

​

9,605

​

​

—

​

​

—

​

​

​

 

438,610

​

 

443,080

​

 

(7,261)

​

 

(8,067)

​

Less current maturities

​

 

(15,359)

​

 

(16,071)

​

 

—

​

 

—

​

Total long-term debt

​

$

423,251

​

$

427,009

​

$

(7,261)

​

$

(8,067)

​
v3.22.1
INCOME TAXES (Tables)
 3 Months Ended
Mar. 31, 2022
INCOME TAXES  
Components of income tax expense (benefit)

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended March 31, 

 

​

​

2022

    

2021

 

​

​

(in thousands)

​

Current:

​

​

​

​

​

​

​

Federal

​

$

5,034

​

$

(1)

​

State

​

 

386

​

 

—

​

​

​

 

5,420

​

 

(1)

​

Deferred:

​

​

​

​

​

​

​

Federal

​

 

34,920

​

 

(11)

​

State

​

 

2,375

​

 

—

​

​

​

 

37,295

​

 

(11)

​

Income tax expense (benefit)

​

$

42,715

​

$

(12)

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

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended March 31, 

 

​

    

2022

    

2021

 

​

​

(in thousands)

​

Income taxes at statutory rate

​

$

16,728

​

$

5,211

​

​

​

​

​

​

​

​

​

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

​

 

(12,087)

​

 

(5,033)

​

​

​

​

​

​

​

​

​

Increase (decrease) resulting from:

​

​

​

​

​

​

​

State taxes, net of federal income tax

​

 

361

​

 

38

​

Change in valuation allowance of deferred tax assets

​

 

(10)

​

 

(163)

​

Deferred taxes related to tax election

​

​

37,253

​

​

—

​

Other

​

 

470

​

 

(65)

​

Income tax expense (benefit)

​

$

42,715

​

$

(12)

​
Components of deferred tax liabilities and deferred tax assets

​

​

​

​

​

​

​

​

​

​

​

March 31, 

​

December 31, 

 

​

    

2022

    

2021

 

​

​

(in thousands)

​

Deferred tax liabilities:

​

​

​

​

​

​

​

Property, plant and equipment

​

$

(40,119)

​

$

(2,169)

​

Total deferred tax liabilities

​

​

(40,119)

​

​

(2,169)

​

​

​

​

​

​

​

​

​

Deferred tax assets:

​

​

​

​

​

​

​

Federal loss carryovers and credits

​

​

2,071

​

​

1,328

​

Other

​

 

735

​

 

808

​

Total deferred tax assets

​

​

2,806

​

​

2,136

​

Less valuation allowance

​

​

(307)

​

​

(317)

​

Net deferred tax assets

​

​

2,499

​

​

1,819

​

​

​

​

​

​

​

​

​

Overall net deferred tax liabilities

​

$

(37,620)

​

$

(350)

​
v3.22.1
VARIABLE INTEREST ENTITIES (Tables)
 3 Months Ended
Mar. 31, 2022
VARIABLE INTEREST ENTITIES  
Schedule of distributions

​

​

​

​

​

​

​

​

​

​

​

Alliance

​

Bluegrass

​

​

​

Minerals

​

Minerals

​

​

​

(in thousands)

​

Contributions

​

$

143,112

​

$

5,963

​

Distributions

​

​

117,162

​

​

4,881

​
v3.22.1
INVESTMENT (Tables)
 3 Months Ended
Mar. 31, 2022
INVESTMENT  
Schedule of changes in equity method investment

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

​

​

March 31, 

​

​

    

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

26,325

​

$

27,268

​

Equity method investment income

​

​

883

​

​

62

​

Distributions received

​

​

(1,014)

​

​

(423)

​

Ending balance

​

$

26,194

​

$

26,907

​
v3.22.1
PARTNERS' CAPITAL (Tables)
 3 Months Ended
Mar. 31, 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 (1)

​

​

0.3500

​

​

—

​

Total

​

$

0.6000

​

$

32,750

​

(1)On April 26, 2022, we declared this quarterly distribution payable on May 13, 2022 to all unitholders of record as of May 6, 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

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

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

​
v3.22.1
REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)
 3 Months Ended
Mar. 31, 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 March 31, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

253,905

​

$

134,455

​

$

—

​

$

—

​

$

—

​

$

388,360

​

Oil & gas royalties

​

​

—

​

​

—

​

​

30,927

​

​

—

​

​

—

​

​

30,927

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

15,167

​

​

(15,167)

​

​

—

​

Transportation revenues

​

​

18,891

​

​

10,481

​

​

—

​

​

—

​

​

—

​

​

29,372

​

Other revenues

​

​

1,900

​

​

363

​

​

34

​

​

—

​

​

9,907

​

​

12,204

​

Total revenues

​

$

274,696

​

$

145,299

​

$

30,961

​

$

15,167

​

$

(5,260)

​

$

460,863

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended March 31, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Coal sales

​

$

182,641

​

$

104,846

​

$

—

​

$

—

​

$

—

​

$

287,487

​

Oil & gas royalties

​

​

—

​

​

—

​

​

13,999

​

​

—

​

​

—

​

​

13,999

​

Coal royalties

​

​

—

​

​

—

​

​

—

​

​

11,301

​

​

(11,301)

​

​

—

​

Transportation revenues

​

​

7,680

​

​

3,388

​

​

—

​

​

—

​

​

—

​

​

11,068

​

Other revenues

​

​

613

​

​

385

​

​

21

​

​

—

​

​

5,049

​

​

6,068

​

Total revenues

​

$

190,934

​

$

108,619

​

$

14,020

​

$

11,301

​

$

(6,252)

​

$

318,622

​
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

​

$

835,565

​

$

467,537

​

$

244,936

​

$

35,747

​

$

1,583,785

Appalachia Coal Operations coal revenues

​

​

436,639

​

​

235,295

​

​

136,936

​

​

—

​

​

808,870

Total coal revenues (1)

​

$

1,272,204

​

$

702,832

​

$

381,872

​

$

35,747

​

$

2,392,655

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

v3.22.1
EARNINGS PER LIMITED PARTNER UNIT (Tables)
 3 Months Ended
Mar. 31, 2022
EARNINGS PER LIMITED PARTNER UNIT  
Reconciliation of net income and EPU calculations

​

​

​

​

​

​

​

​

​

​

Three Months Ended

​

​

​

March 31, 

​

​

    

2022

    

2021

    

​

​

(in thousands, except per unit data)

​

Net income attributable to ARLP

​

$

36,652

​

$

24,748

​

​

​

​

​

​

​

​

​

Less:

​

​

​

​

​

​

​

Distributions to participating securities

​

 

(1,552)

​

 

(218)

​

Undistributed earnings attributable to participating securities

​

 

—

​

 

(200)

​

​

​

​

​

​

​

​

​

Net income attributable to ARLP available to limited partners

​

$

35,100

​

$

24,330

​

​

​

​

​

​

​

​

​

Weighted-average limited partner units outstanding – basic and diluted

​

 

127,195

​

 

127,195

​

​

​

​

​

​

​

​

​

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

​

$

0.28

​

$

0.19

​

(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 3,139 and 1,237 for the three months ended March 31, 2022 and 2021, respectively, were considered anti-dilutive under the treasury stock method.
v3.22.1
WORKERS' COMPENSATION AND PNEUMOCONIOSIS (Tables)
 3 Months Ended
Mar. 31, 2022
Black lung benefits:  
Reconciliation of changes in workers' compensation liability

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

 

​

​

March 31, 

​

​

​

2022

    

2021

​

​

​

(in thousands)

​

Beginning balance

​

$

53,448

​

$

54,739

​

Accruals increase

​

 

2,275

​

 

1,672

​

Payments

​

 

(2,804)

​

 

(2,410)

​

Interest accretion

​

 

287

​

 

232

​

Ending balance

​

$

53,206

​

$

54,233

​
Pneumoconiosis benefits  
Black lung benefits:  
Components of net periodic benefit cost

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

​

​

March 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

Service cost

​

$

947

​

$

1,031

 

Interest cost (1)

​

 

747

​

 

636

​

Net amortization (1)

​

 

260

​

 

1,043

​

Net periodic benefit cost

​

$

1,954

​

$

2,710

​

(1)Interest cost and net amortization are included in the Other income (expense) line item within our condensed consolidated statements of income.
v3.22.1
COMMON UNIT-BASED COMPENSATION PLANS (Tables)
 3 Months Ended
Mar. 31, 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)

 

687,719

​

​

13.34

​

​

​

​

Forfeited

 

(17,063)

​

 

5.25

​

​

​

​

Non-vested grants at March 31, 2022

 

3,801,131

​

 

6.99

​

​

57,926

​

(1)The restricted units granted during 2022 have minimum-value guarantees of either $9.62 or $6.41 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

​

12,370

​

​

13.61

​

​

​

​

Phantom units outstanding as of March 31, 2022

 

681,068

​

 

20.25

​

​

10,509

​
v3.22.1
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS (Tables)
 3 Months Ended
Mar. 31, 2022
Defined benefit pension plan  
Employee Benefit Plans  
Components of net periodic benefit cost

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

​

​

March 31, 

​

​

​

2022

    

2021

    

​

​

(in thousands)

​

Interest cost

​

$

932

​

$

860

​

Expected return on plan assets

​

 

(1,665)

​

 

(1,671)

​

Amortization of prior service cost

​

​

47

​

​

47

​

Amortization of net loss

​

 

483

​

 

1,141

​

Net periodic benefit cost (1)

​

$

(203)

​

$

377

​

(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.
v3.22.1
SEGMENT INFORMATION (Tables)
 3 Months Ended
Mar. 31, 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 March 31, 2022

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

274,696

​

$

145,299

​

$

30,961

​

$

—

​

$

9,907

​

$

460,863

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

15,167

​

​

(15,167)

​

​

—

​

Total revenues (1)

​

​

274,696

​

​

145,299

​

​

30,961

​

​

15,167

​

​

(5,260)

​

​

460,863

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

177,589

​

​

83,715

​

​

3,001

​

​

4,819

​

​

(7,944)

​

 

261,180

​

Segment Adjusted EBITDA (3)

​

 

78,215

​

​

51,103

​

​

28,552

​

​

10,348

​

​

2,686

​

 

170,904

​

Total assets

​

 

704,627

​

​

425,929

​

​

650,794

​

​

291,153

​

​

153,044

​

 

2,225,547

​

Capital expenditures

​

 

36,547

​

​

18,345

​

​

—

​

​

—

​

​

4,261

​

 

59,153

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three Months Ended March 31, 2021

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Revenues - Outside

​

$

190,934

​

$

108,619

​

$

14,020

​

$

—

​

$

5,049

​

$

318,622

​

Revenues - Intercompany

​

​

—

​

​

—

​

​

—

​

​

11,301

​

​

(11,301)

​

​

—

​

Total revenues (1)

​

​

190,934

​

​

108,619

​

​

14,020

​

​

11,301

​

​

(6,252)

​

​

318,622

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Segment Adjusted EBITDA Expense (2)

​

 

125,581

​

​

73,726

​

​

2,058

​

​

4,028

​

​

(7,676)

​

 

197,717

​

Segment Adjusted EBITDA (3)

​

 

57,673

​

​

31,506

​

​

11,946

​

​

7,273

​

​

1,423

​

 

109,821

​

Total assets

​

 

740,945

​

​

442,595

​

​

609,108

​

​

294,333

​

​

64,199

​

 

2,151,180

​

Capital expenditures

​

 

16,401

​

​

11,666

​

​

—

​

​

—

​

​

3,370

​

 

31,437

​

(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

​

​

​

March 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

Segment Adjusted EBITDA Expense

​

$

261,180

​

$

197,717

​

Other income (expense)

​

 

566

​

 

(1,197)

​

Operating expenses (excluding depreciation, depletion and amortization)

​

$

261,746

​

$

196,520

​

​

(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:
Reconciliation of consolidated Segment Adjusted EBITDA Expense to operating expenses (excluding depreciation, depletion and amortization)

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

​

​

March 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

Segment Adjusted EBITDA Expense

​

$

261,180

​

$

197,717

​

Other income (expense)

​

 

566

​

 

(1,197)

​

Operating expenses (excluding depreciation, depletion and amortization)

​

$

261,746

​

$

196,520

​
Reconciliation of consolidated Segment Adjusted EBITDA to net income

​

​

​

​

​

​

​

​

​

​

    

Three Months Ended

​

​

​

March 31, 

​

​

​

2022

    

2021

 

​

​

(in thousands)

​

Consolidated Segment Adjusted EBITDA

​

$

170,904

​

$

109,821

​

General and administrative

​

 

(18,596)

​

 

(15,504)

​

Depreciation, depletion and amortization

​

 

(63,314)

​

 

(59,202)

​

Interest expense, net

​

 

(9,627)

​

 

(10,379)

​

Income tax (expense) benefit

​

 

(42,715)

​

 

12

​

Net income attributable to ARLP

​

$

36,652

​

$

24,748

​

Noncontrolling interest

​

​

290

​

​

78

​

Net income

​

$

36,942

​

$

24,826

​
v3.22.1
INVENTORIES (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
INVENTORIES    
Coal $ 56,084 $ 24,845
Supplies (net of reserve for obsolescence of $5,571 and $5,554, respectively) 39,661 35,457
Total inventories, net 95,745 60,302
Reserve for obsolescence $ 5,571 $ 5,554
v3.22.1
FAIR VALUE MEASUREMENTS (Details) - Estimated fair value - Significant Observable Inputs (Level 2) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
FAIR VALUE MEASUREMENTS    
Long-term debt $ 438,553 $ 457,758
Total $ 438,553 $ 457,758
v3.22.1
LONG-TERM DEBT - Components (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Principal    
Aggregate maturities of long-term debt $ 438,610 $ 443,080
Less current maturities (15,359) (16,071)
Total long-term debt 423,251 427,009
Unamortized Discount and Debt Issuance Costs    
Unamortized debt issuance costs including current and non-current (7,261) (8,067)
Total unamortized debt issuance costs (7,261) (8,067)
Revolving credit facility    
Unamortized Discount and Debt Issuance Costs    
Unamortized debt issuance costs including current and non-current (4,441) (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 (2,820) (3,048)
May 2019 equipment financing    
Principal    
Aggregate maturities of long-term debt 606 1,503
November 2019 equipment financing    
Principal    
Aggregate maturities of long-term debt 29,295 31,972
June 2020 equipment financing    
Principal    
Aggregate maturities of long-term debt $ 8,709 $ 9,605
v3.22.1
LONG-TERM DEBT - Credit Facility (Details)
$ in Millions
 3 Months Ended
Mar. 09, 2020
USD ($)
Mar. 31, 2022
USD ($)
Credit Agreement    
Long-Term Debt    
Maximum borrowing capacity $ 459.5  
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   0.88
Actual cash flow to interest expense ratio for trailing twelve months   12.91
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   0.09
Revolving credit facility    
Long-Term Debt    
Line of credit facility, available for borrowing   $ 415.4
Annual commitment fee percentage, undrawn portion   0.35%
Revolving credit facility | Eurodollar Rate    
Long-Term Debt    
Effective interest rate (as a percent)   2.80%
Letters of credit subfacility    
Long-Term Debt    
Maximum borrowing capacity $ 125.0  
Letters of credit outstanding   $ 44.1
Swingline subfacility    
Long-Term Debt    
Maximum borrowing capacity $ 15.0  
v3.22.1
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%
v3.22.1
LONG-TERM DEBT - Securitization Facility (Details) - Securitization Facility - USD ($)
$ in Millions
Mar. 31, 2022
Jan. 31, 2021
Dec. 05, 2014
Long-Term Debt      
Maximum borrowing capacity   $ 60.0 $ 100.0
Facility outstanding amount $ 0.0    
v3.22.1
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%    
v3.22.1
INCOME TAXES - Components (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Current:    
Federal $ 5,034 $ (1)
State 386  
Total current income tax expense (benefit) 5,420 (1)
Deferred:    
Federal 34,920 (11)
State 2,375  
Total deferred income tax expense (benefit) 37,295 (11)
Income tax expense (benefit) $ 42,715 $ (12)
v3.22.1
INCOME TAXES - Tax election (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2019
Dec. 31, 2021
Taxes        
Deferred tax liability $ 37,620     $ 350
Income tax expense $ 42,715 $ (12)    
Earnings per limited partner unit - basic (in dollars per unit) $ 0.28 $ 0.19    
Earnings per limited partner unit - diluted (in dollars per unit) $ 0.28 $ 0.19    
AllDale I and II        
Taxes        
Non - cash acquisition gain recognized     $ 177,000  
Change in tax accounting        
Taxes        
Deferred tax liability $ 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)      
v3.22.1
INCOME TAXES - Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Taxes    
Income taxes at statutory rate $ 16,728 $ 5,211
Less: Income taxes at statutory rate on Partnership income not subject to income taxes (12,087) (5,033)
Increase/(decrease) resulting from:    
State taxes, net of federal income tax 361 38
Change in valuation allowance of deferred tax assets (10) (163)
Other 470 (65)
Income tax expense (benefit) 42,715 $ (12)
Change in tax accounting    
Increase/(decrease) resulting from:    
Deferred taxes related to tax election 37,253  
Income tax expense (benefit) $ 37,300  
v3.22.1
INCOME TAXES - Deferred tax (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Deferred tax liabilities:    
Property, plant and equipment $ (40,119) $ (2,169)
Deferred tax liabilities (40,119) (2,169)
Deferred tax assets:    
Federal loss carryovers and credits 2,071 1,328
Other 735 808
Total deferred tax assets 2,806 2,136
Less valuation allowance (307) (317)
Net deferred tax assets 2,499 1,819
Overall net deferred tax liabilities $ (37,620) $ (350)
v3.22.1
VARIABLE INTEREST ENTITIES - Cavalier (Details) - USD ($)
$ in Thousands
 3 Months Ended 4 Months Ended 12 Months Ended
Feb. 14, 2022
Nov. 12, 2021
Aug. 13, 2021
May 14, 2021
Mar. 31, 2022
May 13, 2022
Dec. 31, 2021
Variable Interest Entities              
Distributions paid to Partners $ 32,750 $ 26,072 $ 13,041 $ 13,045 $ 32,750 $ 32,750 $ 52,158
Cavalier Minerals | Alliance Minerals              
Variable Interest Entities              
Contributions         143,112    
Distributions paid to Partners         117,162    
Cavalier Minerals | Bluegrass Minerals              
Variable Interest Entities              
Contributions         5,963    
Distributions paid to Partners         $ 4,881    
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%    
v3.22.1
VARIABLE INTEREST ENTITIES - All Dale III (Detail) - All Dale Minerals III - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Feb. 28, 2017
Equity 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    
Equity Investments    
Ownership percentage by limited partners 13.90%  
v3.22.1
INVESTMENT - AllDale (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
ASSETS    
Beginning balance $ 26,325  
Equity method investment income 883 $ 62
Ending balance 26,194  
All Dale Minerals III    
ASSETS    
Beginning balance 26,325 27,268
Equity method investment income 883 62
Distributions received (1,014) (423)
Ending balance $ 26,194 $ 26,907
v3.22.1
PARTNERS' CAPITAL - Distributions (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 4 Months Ended 12 Months Ended
May 13, 2022
Feb. 14, 2022
Nov. 12, 2021
Aug. 13, 2021
May 14, 2021
Mar. 31, 2022
May 13, 2022
Dec. 31, 2021
PARTNERS' CAPITAL                
Quarterly distribution paid (in dollars per unit) $ 0.3500 $ 0.2500 $ 0.2000 $ 0.1000 $ 0.1000   $ 0.6000 $ 0.4000
Total Cash Distribution   $ 32,750 $ 26,072 $ 13,041 $ 13,045 $ 32,750 $ 32,750 $ 52,158
v3.22.1
PARTNERS' CAPITAL - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 47 Months Ended
Mar. 31, 2022
Mar. 31, 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  
v3.22.1
PARTNERS' CAPITAL - Change (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Increase (decrease) in Partners' Capital    
Balance at beginning of period $ 1,226,069 $ 1,072,267
Balance at beginning of period (in units) 127,195,219  
Comprehensive income (loss):    
Net income (loss) $ 36,942 24,826
Actuarially determined long-term liability adjustments 790 2,231
COMPREHENSIVE INCOME 37,732 27,057
Common unit-based compensation 2,640 723
Distributions on deferred common unit-based compensation (950)  
Distributions from consolidated company to noncontrolling interest (298) (141)
Distributions to Partners (31,800)  
Balance at end of period $ 1,233,393 1,099,906
Balance at end of period (in units) 127,195,219  
Accumulated Other Comprehensive Income (Loss)    
Increase (decrease) in Partners' Capital    
Balance at beginning of period $ (64,229) (87,674)
Comprehensive income (loss):    
Actuarially determined long-term liability adjustments 790 2,231
Balance at end of period (63,439) (85,443)
Noncontrolling Interest    
Increase (decrease) in Partners' Capital    
Balance at beginning of period 11,115 11,376
Comprehensive income (loss):    
Net income (loss) 290 78
Distributions from consolidated company to noncontrolling interest (298) (141)
Balance at end of period 11,107 11,313
Limited Partners' Capital    
Increase (decrease) in Partners' Capital    
Balance at beginning of period $ 1,279,183 $ 1,148,565
Balance at beginning of period (in units) 127,195,219 127,195,219
Comprehensive income (loss):    
Net income (loss) $ 36,652 $ 24,748
Common unit-based compensation 2,640 723
Distributions on deferred common unit-based compensation (950)  
Distributions to Partners (31,800)  
Balance at end of period $ 1,285,725 $ 1,174,036
Balance at end of period (in units) 127,195,219 127,195,219
v3.22.1
REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of revenues    
Revenues $ 460,863 $ 318,622
Illinois Basin    
Disaggregation of revenues    
Revenues 274,696 190,934
Appalachia    
Disaggregation of revenues    
Revenues 145,299 108,619
Oil & Gas Royalties    
Disaggregation of revenues    
Revenues 30,961 14,020
Coal Royalties    
Disaggregation of revenues    
Revenues 15,167 11,301
Other, Corporate and Elimination    
Disaggregation of revenues    
Revenues (5,260) (6,252)
Coal sales    
Disaggregation of revenues    
Revenues 388,360 287,487
Coal sales | Illinois Basin    
Disaggregation of revenues    
Revenues 253,905 182,641
Coal sales | Appalachia    
Disaggregation of revenues    
Revenues 134,455 104,846
Oil & gas royalties    
Disaggregation of revenues    
Revenues 30,927 13,999
Oil & gas royalties | Oil & Gas Royalties    
Disaggregation of revenues    
Revenues 30,927 13,999
Coal royalties | Coal Royalties    
Disaggregation of revenues    
Revenues 15,167 11,301
Coal royalties | Other, Corporate and Elimination    
Disaggregation of revenues    
Revenues (15,167) (11,301)
Transportation    
Disaggregation of revenues    
Revenues 29,372 11,068
Transportation | Illinois Basin    
Disaggregation of revenues    
Revenues 18,891 7,680
Transportation | Appalachia    
Disaggregation of revenues    
Revenues 10,481 3,388
Other revenues    
Disaggregation of revenues    
Revenues 12,204 6,068
Other revenues | Illinois Basin    
Disaggregation of revenues    
Revenues 1,900 613
Other revenues | Appalachia    
Disaggregation of revenues    
Revenues 363 385
Other revenues | Oil & Gas Royalties    
Disaggregation of revenues    
Revenues 34 21
Other revenues | Other, Corporate and Elimination    
Disaggregation of revenues    
Revenues $ 9,907 $ 5,049
v3.22.1
REVENUE FROM CONTRACTS WITH CUSTOMERS - Supply contracts (Details)
$ in Thousands
Mar. 31, 2022
USD ($)
Performance obligations unsatisfied or partially unsatisfied  
Total $ 2,392,655
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 1,272,204
Expected timing of satisfaction period 9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 702,832
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 $ 381,872
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 $ 35,747
Expected timing of satisfaction period 1 year
Illinois Basin  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 1,583,785
Illinois Basin | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 835,565
Expected timing of satisfaction period 9 months
Illinois Basin | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 467,537
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 $ 244,936
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 $ 35,747
Expected timing of satisfaction period 1 year
Appalachia  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 808,870
Appalachia | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 436,639
Expected timing of satisfaction period 9 months
Appalachia | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Performance obligations unsatisfied or partially unsatisfied  
Total $ 235,295
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 $ 136,936
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  
Expected timing of satisfaction period 1 year
v3.22.1
EARNINGS PER LIMITED PARTNER UNIT - Reconciliation (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
EARNINGS PER LIMITED PARTNER UNIT    
Net income attributable to ARLP $ 36,652 $ 24,748
Distributions to participating securities (1,552) (218)
Undistributed earnings attributable to participating securities   (200)
Net income attributable to ARLP available to limited partners $ 35,100 $ 24,330
Weighted-average limited partner units outstanding - basic (in units) 127,195,219 127,195,219
Weighted-average limited partner units outstanding - diluted (in units) 127,195,000 127,195,000
Earnings per limited partner unit - basic (in dollars per unit) $ 0.28 $ 0.19
Earnings per limited partner unit - diluted (in dollars per unit) $ 0.28 $ 0.19
Anti-dilutive under the treasury stock method (in units) 3,139,000 1,237,000
v3.22.1
WORKERS' COMPENSATION AND PNEUMOCONIOSIS - Liability (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Reconciliation of changes in the workers' compensation liability    
Beginning balance $ 53,448 $ 54,739
Accruals increase 2,275 1,672
Payments (2,804) (2,410)
Interest accretion 287 232
Ending balance 53,206 $ 54,233
Other long-term assets    
Estimated present value of future obligations and other information    
Receivables for traumatic injury claims $ 5,700  
v3.22.1
WORKERS' COMPENSATION AND PNEUMOCONIOSIS - Periodic Benefit Cost (Details) - Pneumoconiosis benefits - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Black lung benefits:    
Service cost $ 947 $ 1,031
Interest cost 747 636
Net amortization 260 1,043
Net periodic benefit cost $ 1,954 $ 2,710
v3.22.1
COMMON UNIT-BASED COMPENSATION PLANS - LTIP Grants (Details) - ARLP LTIP - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Number of units    
Balance at the beginning of the period (in units) 3,130,475  
Granted (in units) 687,719  
Forfeited (in units) (17,063)  
Balance at the end of the period (in units) 3,801,131  
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) 13.34  
Forfeited (in dollars per unit) 5.25  
Balance at the end of the period (in dollars per unit) $ 6.99  
Intrinsic value (in dollars)    
Intrinsic value of outstanding grants (in dollars) $ 57,926 $ 39,569
$9.62 minimum-value guarantee    
Other information    
Guaranteed minimum (in dollars per unit) $ 9.62  
$6.41 minimum-value guarantee    
Other information    
Guaranteed minimum (in dollars per unit) $ 6.41  
v3.22.1
COMMON UNIT-BASED COMPENSATION PLANS - LTIP Other (Details) - ARLP LTIP - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Other information    
Unit-based compensation expense $ 2.3 $ 0.7
Total unit-based obligation recorded 9.0  
Unrecognized compensation expense (in dollars) $ 17.6  
Weighted-average period for recognition of expense 1 year 7 months 6 days  
v3.22.1
COMMON UNIT-BASED COMPENSATION PLANS - SERP and Directors Comp (Details) - SERP and Deferred Compensation Plans - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Other information      
Unit-based compensation expense $ 200 $ 40  
Total unit-based obligation recorded $ 13,800    
Phantom Share Units (PSUs)      
Number of units      
Balance at the beginning of the period (in units) 668,698    
Granted (in units) 12,370    
Balance at the end of the period (in units) 681,068    
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) 13.61    
Balance at the end of the period (in dollars per unit) $ 20.25    
Intrinsic value of outstanding grants (in dollars) $ 10,509   $ 8,452
v3.22.1
COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COSTS (Details) - Defined benefit pension plan - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Components of net periodic benefit cost:    
Interest cost $ 932 $ 860
Expected return on plan assets (1,665) (1,671)
Amortization of prior service cost 47 47
Amortization of net loss 483 1,141
Net periodic benefit cost $ (203) $ 377
v3.22.1
SEGMENT INFORMATION - General (Details)
 3 Months Ended
Mar. 31, 2022
segment
SEGMENT INFORMATION  
Number of reportable segments 4
Number Of Coal Reportable Segments 2
Number Of Mining Complex 7
v3.22.1
SEGMENT INFORMATION - Segment Results (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Reportable segment results      
Revenues $ 460,863 $ 318,622  
Segment Adjusted EBITDA Expense 261,180 197,717  
Segment Adjusted EBITDA 170,904 109,821  
Total assets 2,225,547 2,151,180 $ 2,159,406
Capital expenditures 59,153 31,437  
Illinois Basin      
Reportable segment results      
Revenues 274,696 190,934  
Segment Adjusted EBITDA Expense 177,589 125,581  
Segment Adjusted EBITDA 78,215 57,673  
Total assets 704,627 740,945  
Capital expenditures 36,547 16,401  
Appalachia      
Reportable segment results      
Revenues 145,299 108,619  
Segment Adjusted EBITDA Expense 83,715 73,726  
Segment Adjusted EBITDA 51,103 31,506  
Total assets 425,929 442,595  
Capital expenditures 18,345 11,666  
Oil & Gas Royalties      
Reportable segment results      
Revenues 30,961 14,020  
Segment Adjusted EBITDA Expense 3,001 2,058  
Segment Adjusted EBITDA 28,552 11,946  
Total assets 650,794 609,108  
Coal Royalties      
Reportable segment results      
Revenues 15,167 11,301  
Segment Adjusted EBITDA Expense 4,819 4,028  
Segment Adjusted EBITDA 10,348 7,273  
Total assets 291,153 294,333  
Other, Corporate and Elimination      
Reportable segment results      
Revenues (5,260) (6,252)  
Segment Adjusted EBITDA Expense (7,944) (7,676)  
Segment Adjusted EBITDA 2,686 1,423  
Total assets 153,044 64,199  
Capital expenditures 4,261 3,370  
Operating segments      
Reportable segment results      
Revenues 460,863 318,622  
Operating segments | Illinois Basin      
Reportable segment results      
Revenues 274,696 190,934  
Operating segments | Appalachia      
Reportable segment results      
Revenues 145,299 108,619  
Operating segments | Oil & Gas Royalties      
Reportable segment results      
Revenues 30,961 14,020  
Operating segments | Other, Corporate and Elimination      
Reportable segment results      
Revenues 9,907 5,049  
Elimination | Coal Royalties      
Reportable segment results      
Revenues 15,167 11,301  
Elimination | Other, Corporate and Elimination      
Reportable segment results      
Revenues $ (15,167) $ (11,301)  
v3.22.1
SEGMENT INFORMATION - EBITDA Expense Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Reconciliation of consolidated Segment Adjusted EBITDA Expense    
Segment Adjusted EBITDA Expense $ 261,180 $ 197,717
Other income (expense) 566 (1,197)
Product    
Reconciliation of consolidated Segment Adjusted EBITDA Expense    
Operating expenses (excluding depreciation, depletion and amortization) $ 261,746 $ 196,520
v3.22.1
SEGMENT INFORMATION - EBITDA Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Reconciliation of consolidated Segment Adjusted EBITDA to net income    
Consolidated Segment Adjusted EBITDA $ 170,904 $ 109,821
General and administrative (18,596) (15,504)
Depreciation, depletion and amortization (63,314) (59,202)
Interest expense, net (9,627) (10,379)
Income tax (expense) benefit (42,715) 12
NET INCOME ATTRIBUTABLE TO ARLP 36,652 24,748
Noncontrolling interest 290 78
NET INCOME $ 36,942 $ 24,826
v3.22.1
SUBSEQUENT EVENTS (Details) - Subsequent event - USD ($)
$ in Millions
Apr. 05, 2022
Apr. 29, 2022
Francis Renewable Energy, LLC    
Subsequent Event    
Funding commitment $ 50.0  
Purchase of equity method investment $ 20.0  
Infinitum Electric, Inc    
Subsequent Event    
Equity investment without readily determinable fair value   $ 32.6