Alpha Metallurgical Resources (AMR) 10-Q 8 Aug 22 2022 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2022	Jul. 31, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	001-38735
Entity Registrant Name	ALPHA METALLURGICAL RESOURCES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	81-3015061
Entity Address, Address Line One	340 Martin Luther King Jr. Blvd.
Entity Address, City or Town	Bristol
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37620
City Area Code	423
Local Phone Number	573-0300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock
Trading Symbol	AMR
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		17,324,096
Entity Central Index Key	0001704715
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Amendment Flag	false

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Coal revenues	$ 1,334,258	$ 393,458	$ 2,403,996	$ 778,910
Other revenues	2,154	1,817	4,380	2,618
Total revenues	1,336,412	395,275	2,408,376	781,528
Costs and expenses:
Cost of coal sales (exclusive of items shown separately below)	625,892	346,763	1,181,209	694,191
Depreciation, depletion and amortization	27,730	27,304	55,765	55,742
Accretion on asset retirement obligations	5,947	6,648	11,901	13,296
Amortization of acquired intangibles, net	5,747	2,553	11,495	6,422
Asset impairment and restructuring	0	0	0	(561)
Selling, general and administrative expenses (exclusive of depreciation, depletion and amortization shown separately above)	18,158	14,645	33,244	29,627
Total other operating loss (income):
Mark-to-market adjustment for acquisition-related obligations	4,208	3,157	13,569	6,333
Other income	(1,516)	(3,608)	(2,144)	(4,833)
Total costs and expenses	686,166	397,462	1,305,039	800,217
Income (loss) from operations	650,246	(2,187)	1,103,337	(18,689)
Other (expense) income:
Interest expense	(5,218)	(17,962)	(18,301)	(35,952)
Interest income	164	104	348	268
Equity loss in affiliates	(2,136)	(384)	(3,497)	(518)
Miscellaneous income, net	1,385	1,847	3,182	3,613
Total other expense, net	(5,805)	(16,395)	(18,268)	(32,589)
Income (loss) from continuing operations before income taxes	644,441	(18,582)	1,085,069	(51,278)
Income tax expense	(69,012)	(8)	(108,636)	(3)
Net income (loss) from continuing operations	575,429	(18,590)	976,433	(51,281)
Discontinued operations:
Loss from discontinued operations before income taxes	(1,652)	(401)	(1,798)	(638)
Income tax benefit from discontinued operations	380	0	413	0
Loss from discontinued operations	(1,272)	(401)	(1,385)	(638)
Net income (loss)	$ 574,157	$ (18,991)	$ 975,048	$ (51,919)
Basic income (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	$ 31.31	$ (1.01)	$ 52.85	$ (2.78)
Loss from discontinued operations (in dollars per share)	(0.07)	(0.02)	(0.08)	(0.04)
Net income (loss) (in dollars per share)	31.24	(1.03)	52.77	(2.82)
Diluted income (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	30.03	(1.01)	50.46	(2.78)
Loss from discontinued operations (in dollars per share)	(0.06)	(0.02)	(0.07)	(0.04)
Net income (loss) (in dollars per share)	$ 29.97	$ (1.03)	$ 50.39	$ (2.82)
Weighted average shares - basic (in shares)	18,380,114	18,438,699	18,476,534	18,416,946
Weighted average shares - diluted (in shares)	19,158,848	18,438,699	19,349,209	18,416,946

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Other Comprehensive Income [Abstract]
Net income (loss)	$ 574,157	$ (18,991)	$ 975,048	$ (51,919)
Employee benefit plans:
Amortization of and adjustments to employee benefit costs	(3,976)	10,180	(3,201)	11,664
Income tax expense	0	0	0	0
Total other comprehensive (loss) income, net of tax	(3,976)	10,180	(3,201)	11,664
Total comprehensive income (loss)	$ 570,181	$ (8,811)	$ 971,847	$ (40,255)

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 161,732	$ 81,211
Trade accounts receivable, net of allowance for doubtful accounts of $473 and $393 as of June 30, 2022 and December 31, 2021, respectively	721,830	489,241
Inventories, net	167,192	129,382
Prepaid Expense and Other Assets, Current	57,853	47,690
Current assets - discontinued operations	70	462
Total current assets	1,108,677	747,986
Property, plant, and equipment, net of accumulated depreciation and amortization of $478,210 and $443,856 as of June 30, 2022 and December 31, 2021, respectively	392,074	362,218
Owned and leased mineral rights, net of accumulated depletion and amortization of $66,891 and $52,444 as of June 30, 2022 and December 31, 2021, respectively	429,854	444,302
Other acquired intangibles, net of accumulated amortization of $45,716 and $34,221 as of June 30, 2022 and December 31, 2021, respectively	62,702	74,197
Long-term restricted investments	94,794	28,443
Long-term restricted cash	24,920	89,426
Other non-current assets	94,617	102,614
Non-current assets - discontinued operations	8,508	8,526
Total assets	2,216,146	1,857,712
Current liabilities:
Current portion of long-term debt	1,927	2,989
Trade accounts payable	100,957	90,090
Acquisition-related obligations – current	36,211	22,405
Accrued expenses and other current liabilities	200,268	174,607
Current liabilities - discontinued operations	6,104	5,838
Total current liabilities	345,467	295,929
Long-term debt	2,762	445,562
Acquisition-related obligations - long-term	0	19,000
Workers’ compensation and black lung obligations	202,402	208,193
Pension obligations	155,467	159,930
Asset retirement obligations	133,946	132,013
Deferred income taxes	12,934	317
Other non-current liabilities	20,274	26,176
Non-current liabilities - discontinued operations	23,321	23,683
Total liabilities	896,573	1,310,803
Commitments and Contingencies (Note 16)
Stockholders’ Equity
Preferred stock - par value $0.01, 5.0 million shares authorized, none issued	0	0
Common stock - par value $0.01, 50.0 million shares authorized, 21.6 million issued and 17.7 million outstanding at June 30, 2022 and 20.8 million issued and 18.4 million outstanding at December 31, 2021	216	208
Additional paid-in capital	807,603	784,743
Accumulated other comprehensive loss	(61,704)	(58,503)
Treasury stock, at cost: 3.9 million shares at June 30, 2022 and 2.4 million shares at December 31, 2021	(322,874)	(107,800)
Retained earnings (accumulated deficit)	896,332	(71,739)
Total stockholders’ equity	1,319,573	546,909
Total liabilities and stockholders’ equity	$ 2,216,146	$ 1,857,712

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 473	$ 393
Property, plant and equipment, accumulated amortization, depreciation and amortization	478,210	443,856
Owned and lease mineral rights, accumulated depletion and amortization	66,891	52,444
Other acquired intangibles, accumulated amortization	$ 45,716	$ 34,221
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	21,600,000	20,800,000
Common stock, shares outstanding (in shares)	17,700,000	18,400,000
Treasury stock, shares at cost (in shares)	3,900,000	2,400,000

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating activities:
Net income (loss)	$ 574,157	$ (18,991)	$ 975,048	$ (51,919)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization			55,765	55,742
Amortization of acquired intangibles, net	5,747	2,553	11,495	6,422
Amortization of debt issuance costs and accretion of debt discount			7,231	6,480
Mark-to-market adjustment for acquisition-related obligations	4,208	3,157	13,569	6,333
Gain on disposal of assets			(2,172)	(4,878)
Accretion on asset retirement obligations	5,947	6,648	11,901	13,296
Employee benefit plans, net			232	5,744
Deferred income taxes			12,617	3
Stock-based compensation			2,583	3,162
Equity loss in affiliates	2,136	384	3,497	518
Other, net			567	(58)
Changes in operating assets and liabilities			(290,277)	(66,296)
Net cash provided by (used in) operating activities			802,056	(25,451)
Investing activities:
Capital expenditures	(41,866)	(17,644)	(70,012)	(38,039)
Proceeds on disposal of assets			2,511	6,801
Purchases of investment securities			(127,831)	(15,470)
Maturity of investment securities			60,945	7,766
Capital contributions to equity affiliates			(8,525)	(1,895)
Other, net			(4,237)	35
Net cash used in investing activities			(147,149)	(40,802)
Financing activities:
Principal repayments of long-term debt			(450,362)	(7,521)
Principal repayments of financing lease obligations			(1,098)	(1,002)
Debt issuance costs			0	(226)
Common stock repurchases and related expenses			(194,950)	(680)
Proceeds from exercise of stock options			903	0
Proceeds from exercise of warrants			4,486	0
Net cash used in financing activities			(641,021)	(9,429)
Net increase (decrease) in cash and cash equivalents and restricted cash			13,886	(75,682)
Cash and cash equivalents and restricted cash at beginning of period			182,614	244,571
Cash and cash equivalents and restricted cash at end of period	196,500	168,889	196,500	168,889
Reconciliation of Cash and Cash Equivalents and Restricted Cash
Cash and cash equivalents	161,732	72,337	161,732	72,337
Short-term restricted cash (included in Prepaid expenses and other current assets)	9,848	3,794	9,848	3,794
Long-term restricted cash	24,920	92,758	24,920	92,758
Total cash and cash equivalents and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	$ 196,500	$ 168,889	$ 196,500	$ 168,889

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Treasury Stock at Cost	(Accumulated Deficit) Retained Earnings
Beginning balance at Dec. 31, 2020	$ 200,102	$ 206	$ 779,424	$ (111,985)	$ (107,014)	$ (360,529)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(32,928)					(32,928)
Other comprehensive income (loss), net	1,484			1,484
Stock-based compensation, issuance of common stock for share vesting, and common stock reissuances	2,183	1	2,182
Common stock repurchases and related expenses	(680)				(680)
Ending balance at Mar. 31, 2021	170,161	207	781,606	(110,501)	(107,694)	(393,457)
Beginning balance at Dec. 31, 2020	200,102	206	779,424	(111,985)	(107,014)	(360,529)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(51,919)
Other comprehensive income (loss), net	11,664
Ending balance at Jun. 30, 2021	162,331	208	782,586	(100,321)	(107,694)	(412,448)
Beginning balance at Mar. 31, 2021	170,161	207	781,606	(110,501)	(107,694)	(393,457)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(18,991)					(18,991)
Other comprehensive income (loss), net	10,180			10,180
Stock-based compensation, issuance of common stock for share vesting, and common stock reissuances	981	1	980
Ending balance at Jun. 30, 2021	162,331	208	782,586	(100,321)	(107,694)	(412,448)
Beginning balance at Dec. 31, 2021	546,909	208	784,743	(58,503)	(107,800)	(71,739)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	400,891					400,891
Other comprehensive income (loss), net	775			775
Stock-based compensation, issuance of common stock for share vesting, and common stock reissuances	1,182	1	(391)		1,572
Exercise of stock options	891		891
Warrant exercises	3,039	1	3,038
Common stock repurchases and related expenses	(23,840)				(23,840)
Ending balance at Mar. 31, 2022	929,847	210	788,281	(57,728)	(130,068)	329,152
Beginning balance at Dec. 31, 2021	546,909	208	784,743	(58,503)	(107,800)	(71,739)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	975,048
Other comprehensive income (loss), net	(3,201)
Ending balance at Jun. 30, 2022	1,319,573	216	807,603	(61,704)	(322,874)	896,332
Beginning balance at Mar. 31, 2022	929,847	210	788,281	(57,728)	(130,068)	329,152
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	574,157					574,157
Other comprehensive income (loss), net	(3,976)			(3,976)
Stock-based compensation, issuance of common stock for share vesting, and common stock reissuances	1,401	0	1,249		152
Exercise of stock options	11		11
Warrant exercises	18,068	6	18,062
Common stock repurchases and related expenses	(192,958)				(192,958)
Cash dividend and dividend equivalents declared ($0.375 per share)	(6,977)					(6,977)
Ending balance at Jun. 30, 2022	$ 1,319,573	$ 216	$ 807,603	$ (61,704)	$ (322,874)	$ 896,332

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical)	3 Months Ended
	Jun. 30, 2022 $ / shares
Statement of Stockholders' Equity [Abstract]
Common stock dividends (in dollars per share)	$ 0.375

Business and Basis of Presentat

Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Business Alpha Metallurgical Resources, Inc. (“Alpha” or the “Company”) is a Tennessee-based mining company with operations across Virginia and West Virginia. With customers across the globe, high-quality reserves and significant port capacity, Alpha is a leading U.S. supplier of metallurgical coal products for the steel industry. Basis of Presentation Together, the condensed consolidated statements of operations, comprehensive income (loss), balance sheets, cash flows and stockholders’ equity for the Company are referred to as the “Condensed Consolidated Financial Statements.” The Condensed Consolidated Financial Statements are also referenced across periods as “Condensed Consolidated Statements of Operations,” “Condensed Consolidated Statements of Comprehensive Income (Loss),” “Condensed Consolidated Balance Sheets,” “Condensed Consolidated Statements of Cash Flows,” and “Condensed Consolidated Statements of Stockholders’ Equity.” The Company’s former Northern Appalachia (“NAPP”) operations results of operations and financial position are reported as discontinued operations in the Condensed Consolidated Financial Statements. Refer to Note 2 for further information on discontinued operations. The Condensed Consolidated Financial Statements include all wholly-owned subsidiaries’ results of operations for the three and six months ended June 30, 2022 and 2021. All significant intercompany transactions have been eliminated in consolidation. The accompanying interim Condensed Consolidated Financial Statements are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) and in accordance with the rules and regulations of the United States Securities and Exchange Commission (“SEC”) for Form 10-Q. Such rules and regulations allow the omission of certain information and footnote disclosures normally included in the financial statements prepared in accordance with U.S. GAAP as long as the financial statements are not misleading. In the opinion of management, these interim Condensed Consolidated Financial Statements reflect all normal and recurring adjustments necessary for a fair presentation of the results for the periods presented. Results of operations for the three and six months ended June 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022 or any other period. These interim Condensed Consolidated Financial Statements should be read in conjunction with the Company’s Consolidated Financial Statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. Reclassifications Certain amounts in the prior year Condensed Consolidated Statements of Cash Flows have been reclassified to conform to the current year presentation. COVID-19 Pandemic In the first quarter of 2020, the COVID-19 virus was declared a pandemic by the World Health Organization. The COVID-19 pandemic has had negative impacts on the Company’s business, results of operations, financial condition and cash flows. The Company experienced an increase in employee absences due to COVID-19. Indirectly, through some of the Company’s third-party vendors, the Company and the Company’s customers have experienced some supply chain disruptions due to the COVID-19 pandemic. The full extent of the impact of the COVID-19 pandemic on the Company’s operational and financial performance will depend on certain developments, including the duration of the virus, its impact on the Company’s customers and suppliers, and the range of governmental and community reactions to the pandemic, which cannot be fully predicted. Health and safety are core values of the Company and are the foundation for how the Company manages every aspect of its business. The Company continues to monitor developments closely and adjust as necessary, including with respect to the Company’s implemented policies, procedures, and prevention measures to protect the safety and health of its employees. Recently Adopted Accounting Guidance Fair Value Measurement: In June 2022, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (“ASU 2022-03”). This update clarifies how the fair value of equity securities subject to contractual sale restrictions is determined. Per the update, a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and is not considered in measuring fair value. Additionally, the update requires entities with investments in equity securities subject to contractual sale restrictions to disclose certain qualitative and quantitative information about such securities. The amendments are effective for fiscal years beginning after December 15, 2023, with early application permitted. The Company adopted ASU 2022-03 during the second quarter of 2022. The adoption of this ASU did not have a material impact on the Company’s Condensed Consolidated Financial Statements and related disclosures. Financial Instruments: In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures (“ASU 2022-02”). This update eliminates the troubled debt restructuring model for creditors that have adopted Topic 326. All loan modifications will now be accounted for under general loan modification guidance and, on a prospective basis, entities will be subject to new disclosure requirements covering modifications of receivables to borrowers experiencing financial difficulty. In addition, entities will be required to prospectively disclose current-period gross write-off information by year of origination. The amendments are effective for fiscal years beginning after December 15, 2022, with early application permitted. The Company adopted ASU 2022-02 during the first quarter of 2022. The adoption of this ASU did not have a material impact on the Company’s Condensed Consolidated Financial Statements and related disclosures.

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2022
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations Discontinued operations consist of activity related to the Company’s former NAPP operations. Major Financial Statement Components of Discontinued Operations The loss from discontinued operations before income taxes for the three months ended June 30, 2022 and 2021 was $1,652 and $401, respectively. The loss from discontinued operations before income taxes for the six months ended June 30, 2022 and 2021 was $1,798 and $638, respectively. Refer to the Condensed Consolidated Statements of Operations and Note 5 for loss per share information related to discontinued operations. The major components of assets and liabilities that are classified as discontinued operations in the Condensed Consolidated Balance Sheets are as follows: June 30, 2022 December 31, 2021 Assets: Prepaid expenses and other current assets $ 70 $ 462 Other non-current assets (1) $ 8,508 $ 8,526 Liabilities: Trade accounts payable, accrued expenses and other current liabilities $ 6,104 $ 5,838 Workers’ compensation and black lung obligations, non-current $ 23,321 $ 23,683 (1) Comprised of workers’ compensation insurance receivable and long-term restricted investments collateralizing workers’ compensation obligations.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Disaggregation of Revenue from Contracts with Customers The Company earns revenues primarily through the sale of coal produced at Company operations and coal purchased from third parties. The Company extracts, processes and markets met and thermal coal from deep and surface mines for sale to steel and coke producers, industrial customers, and electric utilities. The Company has disaggregated revenue between met coal and thermal coal and export and domestic revenues which depicts the pricing and contract differences between the two. Export revenue generally is derived by spot or short term contracts with pricing determined at the time of shipment or based on a market index; whereas domestic revenue is characterized by contracts that typically have a term of one year or longer and typically the pricing is fixed. The following tables disaggregate the Company’s coal revenues by product category and by market to depict how the nature, amount, timing, and uncertainty of the Company’s coal revenues and cash flows are affected by economic factors: Three Months Ended June 30, 2022 Met Coal Thermal Coal Total Export coal revenues $ 1,135,757 $ 10,246 $ 1,146,003 Domestic coal revenues 162,483 25,772 188,255 Total coal revenues $ 1,298,240 $ 36,018 $ 1,334,258 Three Months Ended June 30, 2021 Met Coal Thermal Coal Total Export coal revenues $ 250,324 $ 5,693 $ 256,017 Domestic coal revenues 105,235 32,206 137,441 Total coal revenues $ 355,559 $ 37,899 $ 393,458 Six Months Ended June 30, 2022 Met Coal Thermal Coal Total Export coal revenues $ 2,023,763 $ 16,765 $ 2,040,528 Domestic coal revenues 322,470 40,998 363,468 Total coal revenues $ 2,346,233 $ 57,763 $ 2,403,996 Six Months Ended June 30, 2021 Met Coal Thermal Coal Total Export coal revenues $ 493,076 $ 6,724 $ 499,800 Domestic coal revenues 205,477 73,633 279,110 Total coal revenues $ 698,553 $ 80,357 $ 778,910 Performance Obligations The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied as of June 30, 2022: Remainder of 2022 2023 2024 2025 2026 Total Estimated coal revenues $ 23,281 $ 32,919 $ 37,250 $ — $ — $ 93,450

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2022
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The following tables summarize the changes to accumulated other comprehensive loss during the six months ended June 30, 2022 and 2021: Balance January 1, 2022 Other comprehensive income (loss) before reclassifications Amounts reclassified from accumulated other comprehensive loss Balance June 30, 2022 Employee benefit costs $ (58,503) $ (4,837) $ 1,636 $ (61,704) Balance January 1, 2021 Other comprehensive income (loss) before reclassifications Amounts reclassified from accumulated other comprehensive loss Balance June 30, 2021 Employee benefit costs $ (111,985) $ 8,838 $ 2,826 $ (100,321) The following table summarizes the amounts reclassified from accumulated other comprehensive loss and the Condensed Consolidated Statements of Operations line items affected by the reclassification during the three and six months ended June 30, 2022 and 2021: Details about accumulated other comprehensive loss components Amounts reclassified from accumulated other comprehensive loss Affected line item in the Condensed Consolidated Statements of Operations Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Employee benefit costs: Amortization of net actuarial loss (1) $ 871 $ 1,342 $ 1,655 $ 2,826 Miscellaneous income, net Settlement (1) (10) — (19) — Miscellaneous income, net Total before income tax $ 861 $ 1,342 $ 1,636 $ 2,826 Income tax — — — — Income tax expense Total, net of income tax $ 861 $ 1,342 $ 1,636 $ 2,826 (1) These accumulated other comprehensive loss components are included in the computation of net periodic benefit costs for certain employee benefit plans. Refer to Note 14.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2022
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income (Loss) Per Share The number of shares used to calculate basic net income (loss) per common share is based on the weighted average number of the Company’s outstanding common shares during the respective period. The number of shares used to calculate diluted net income (loss) per common share is based on the number of common shares used to calculate basic net income (loss) per common share plus the dilutive effect of stock options and other stock-based instruments held by the Company’s employees and directors during the period, and the Company’s outstanding warrants. The dilutive effect of outstanding stock-based instruments is determined by application of the treasury stock method. The stock options and warrants become dilutive for diluted net income (loss) per common share calculations when the market price of the Company’s common stock exceeds the exercise price. As discussed below, dilutive securities are not included in the computation of diluted net loss per common share for the three and six months ended June 30, 2021 as the impact would be anti-dilutive. For the three months ended June 30, 2022 and 2021, 0 and 942,549 warrants and stock options, respectively, were excluded from the computation of dilutive net income (loss) per common share because they would have been anti-dilutive. For six months ended June 30, 2022 and 2021, 0 and 948,398 warrants, stock options, and other stock-based instruments, respectively, were excluded from the computation of dilutive net loss per common share because they would have been anti-dilutive. When applying the treasury stock method, anti-dilution generally occurs when the exercise prices or unrecognized compensation cost per share are higher than the Company’s average stock price during an applicable period. Anti-dilution also occurs in periods of a net loss, and the dilutive impact of all share-based compensation awards are excluded. For the three months ended June 30, 2021 the weighted average share impact of stock options and other stock-based instruments that were excluded from the calculation of diluted shares due to the Company incurring a net loss for the period was 313,640. For the six months ended June 30, 2021, the weighted average share impact of stock options and other-stock-based instruments that were excluded from the calculation of diluted shares due to the Company incurring a net loss for the period was 301,684. The following table presents the net income (loss) per common share for the three and six months ended June 30, 2022 and 2021: Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Net income (loss) Income (loss) from continuing operations $ 575,429 $ (18,590) $ 976,433 $ (51,281) Loss from discontinued operations (1,272) (401) (1,385) (638) Net income (loss) $ 574,157 $ (18,991) $ 975,048 $ (51,919) Basic Weighted average common shares outstanding - basic 18,380,114 18,438,699 18,476,534 18,416,946 Basic income (loss) per common share: Income (loss) from continuing operations $ 31.31 $ (1.01) $ 52.85 $ (2.78) Loss from discontinued operations (0.07) (0.02) (0.08) (0.04) Net income (loss) $ 31.24 $ (1.03) $ 52.77 $ (2.82) Diluted Weighted average common shares outstanding - basic 18,380,114 18,438,699 18,476,534 18,416,946 Diluted effect of warrants 323,087 — 383,180 — Diluted effect of stock options 5,544 — 6,331 — Diluted effect of other stock-based instruments 450,103 — 483,164 — Weighted average common shares outstanding - diluted 19,158,848 18,438,699 19,349,209 18,416,946 Diluted income (loss) per common share: Income (loss) from continuing operations $ 30.03 $ (1.01) $ 50.46 $ (2.78) Loss from discontinued operations (0.06) (0.02) (0.07) (0.04) Net income (loss) $ 29.97 $ (1.03) $ 50.39 $ (2.82)

Inventories, net

Inventories, net	6 Months Ended
	Jun. 30, 2022
Inventory Disclosure [Abstract]
Inventories, net	Inventories, net Inventories, net consisted of the following: June 30, 2022 December 31, 2021 Raw coal $ 35,078 $ 20,347 Saleable coal 96,009 81,240 Materials, supplies and other, net 36,105 27,795 Total inventories, net $ 167,192 $ 129,382

Capital Stock

Capital Stock	6 Months Ended
	Jun. 30, 2022
Equity [Abstract]
Capital Stock	Capital Stock Share Repurchase Program On March 4, 2022, the Company’s Board of Directors (the “Board”) adopted a share repurchase program that permitted the Company to repurchase up to an aggregate amount of $150,000 of the Company's common stock. On May 3, 2022, the Company’s Board amended the share repurchase program to increase the aggregate amount the Company is permitted to repurchase to an aggregate amount of up to $600,000 of the Company's common stock. Share repurchases may be made from time to time through open market transactions, block trades, tender offers, or otherwise, and has no expiration date. The share repurchase program does not obligate the Company to acquire any particular amount of common stock or to acquire shares on any particular timetable, and the program may be suspended at any time at the Company’s discretion. Repurchases under the program are subject to market and business conditions, levels of available liquidity, the Company’s cash needs, restrictions under agreements or obligations, legal or regulatory requirements or restrictions and other relevant factors. As of June 30, 2022, the Company had repurchased an aggregate of 1,309,362 shares under the plan for an aggregate purchase price of approximately $192,859 (comprised of $192,820 of share repurchases and $39 of related fees). Dividend Program On May 3, 2022, the Company‘s Board adopted a dividend policy. Pursuant to this policy, the Board initially intended to pay aggregate cash dividends of $1.50 per share of common stock per year, with $0.375 per share paid each quarter. Refer to Note 18 for subsequent event disclosures related to the Company’s dividend program including an increase to the declared cash dividend per share for the subsequent quarter. The first quarterly dividend payment became payable on July 1, 2022 for holders of record as of June 15, 2022. In addition, pursuant to the terms of certain stock-based compensation awards under the Company’s Management Incentive Plan and Long-Term Incentive Plan, dividend equivalent amounts will become payable at various vesting dates with respect to each share underlying outstanding award. As of June 30, 2022, the Company recorded a $6,977 dividend payable for the first quarterly dividend declaration, including dividend equivalents, with a reduction to the Company’s retained earnings. Of this dividend payable amount, $6,836 and $141 were included within Accrued expenses and other current liabilities and Other non-current liabilities, respectively, on the Company’s Condensed Consolidated Balance Sheets. We expect any future dividend payments will be targeted to be paid in the first month of each calendar quarter. Any decision to pay future cash dividends will, however, be made by the Board and depend on Alpha’s future earnings and financial condition and other relevant factors. Warrants On July 26, 2016, the Company issued 810,811 warrants, which are classified as equity instruments. Pursuant to the underlying warrants agreement, the warrants are exercisable for cash or on a cashless basis at any time until July 26, 2023, and no fractional shares shall be issued upon warrant exercises. Pursuant to the underlying warrants agreement, the exercise price was adjusted as a result of the occurrence of the dividend declaration during the three months ended June 30, 2022. The exercise price was adjusted from $46.911 per share to $46.804 per share as of the June 15, 2022 dividend record date. The warrant share number remained unchanged, at 1.15. Refer to Note 18 for subsequent event disclosures related to the Company’s dividend program which could result in an adjustment to the warrants exercise price and warrants share number. As of June 30, 2022, 263,718 warrants remained outstanding, with a total of 303,276 shares underlying the un-exercised warrants. For the three and six months ended June 30, 2022, the Company issued 553,296 and 618,157 shares of common stock, respectively, resulting from exercises of its warrants and, pursuant to the terms of the underlying warrants agreement, withheld 168,155 and 168,246 of the issued shares, respectively, in satisfaction of the warrant exercise price and in lieu of fractional shares, which were subsequently reclassified as treasury stock in the amounts of $16,644 and $16,651, respectively. As of June 30, 2021, 801,370 warrants were outstanding, with a total of 921,576 shares underlying the un-exercised warrants. For the three and six months ended June 30, 2021, there were no warrants exercised.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	6 Months Ended
	Jun. 30, 2022
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consisted of the following: June 30, 2022 December 31, 2021 Wages and benefits $ 73,083 $ 52,310 Workers’ compensation 10,582 10,582 Black lung 7,235 7,235 Taxes other than income taxes 32,876 30,734 Asset retirement obligations 32,668 32,159 Accrued interest and fees 1,412 14,489 Freight accrual 20,911 15,085 Dividend payable 6,836 — Other 14,665 12,013 Total accrued expenses and other current liabilities $ 200,268 $ 174,607

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2022
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt consisted of the following: June 30, 2022 December 31, 2021 Term Loan Credit Facility - due June 2024 $ — $ 449,435 Other (1) 4,689 5,311 Debt discount and issuance costs — (6,195) Total long-term debt $ 4,689 $ 448,551 Less current portion (1,927) (2,989) Long-term debt, net of current portion $ 2,762 $ 445,562 (1) Includes financing leases. Term Loan Credit Facility - due June 2024 On June 14, 2019, the Company entered into a Credit Agreement that provided for a senior secured term loan facility with a maturity date of June 14, 2024 (the “Term Loan Credit Facility”). As of June 30, 2022, there were no outstanding borrowings under the Term Loan Credit Facility as a result of the Company’s voluntary prepayments of $449,435 of outstanding principal borrowings during the first and second quarters of 2022. Effective with the final voluntary prepayment on June 3, 2022, the Credit Agreement was terminated, and the Company was released of all underlying obligations including the Credit Agreement covenants. As December 31, 2021, the carrying value of the Term Loan Credit Facility was $443,241, all of which was classified as long-term within the Condensed Consolidated Balance Sheets. Second Amended and Restated Asset-Based Revolving Credit Agreement The Second Amended and Restated Asset-Based Revolving Credit Agreement (“ABL Agreement”) includes a senior secured asset-based revolving credit facility (the “ABL Facility”). Under the ABL Facility, the Company may borrow cash or obtain letters of credit, on a revolving basis, in an aggregate amount of up to $155,000, of which no more than $150,000 may represent outstanding letters of credit ($125,000 on a committed basis and another $25,000 on an uncommitted cash collateralized basis) with any borrowings having a maturity date of December 6, 2024. As of June 30, 2022 and December 31, 2021, there were no outstanding borrowings under the ABL Facility. As of June 30, 2022 and December 31, 2021, the Company had $63,898 and $121,037 letters of credit outstanding under the ABL Facility, respectively. The ABL Agreement provides that a specified percentage of billed and unbilled receivables and raw and clean inventory meeting certain criteria are eligible to be counted for purposes of collateralizing the amount of financing available, subject to certain terms and conditions. Availability under the ABL Facility is calculated on a monthly basis and fluctuates based on qualifying amounts of coal inventory and trade accounts receivable (the “Borrowing Base”) and the facility's covenant limitations related to the Fixed Charge Coverage Ratio (as defined in therein). In accordance with terms of the ABL Facility, the Company may be required to collateralize the ABL Facility to the extent outstanding borrowings and letters of credit under the ABL Facility exceed the Borrowing Base after considering covenant limitations. The ABL Facility is guaranteed by substantially all of Alpha’s direct and indirect subsidiaries (together with Alpha, the “Loan Parties”) and secured by all or substantially all assets of the Loan Parties, including equity in Alpha’s direct domestic subsidiaries, as collateral for the obligations under the ABL Facility. The ABL Facility has a first lien on ABL priority collateral and a second lien on Term Loan Priority Collateral. As noted above, the Term Loan Credit Facility was voluntarily prepaid in full on June 3, 2022, and in connection therewith, the Term Loan Priority Collateral has been released in connection therewith, and the ABL Facility’s lien on the Term Loan Priority Collateral is no longer second. The ABL Agreement, as amended, and related documents contain negative and affirmative covenants including certain financial covenants. The Company is in compliance with all covenants under these agreements as of June 30, 2022.

Acquisition-Related Obligations

Acquisition-Related Obligations	6 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Acquisition-Related Obligations	Acquisition-Related Obligations Acquisition-related obligations consisted of the following: June 30, 2022 December 31, 2021 Contingent Revenue Obligation $ 32,408 $ 35,005 Environmental Settlement Obligations 3,849 6,633 Discount (46) (233) Total acquisition-related obligations $ 36,211 $ 41,405 Less current portion (36,211) (22,405) Acquisition-related obligations, net of current portion $ — $ 19,000 Contingent Revenue Obligation

Asset Retirement Obligations

Asset Retirement Obligations	6 Months Ended
	Jun. 30, 2022
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	Asset Retirement Obligations The following table summarizes the changes in asset retirement obligations for the six months ended June 30, 2022: Total asset retirement obligations at December 31, 2021 $ 164,172 Accretion for the period 11,901 Revisions in estimated cash flows (881) Expenditures for the period (8,578) Total asset retirement obligations at June 30, 2022 166,614 Less current portion (1) (32,668) Long-term portion $ 133,946 (1) Included within Accrued expenses and other current liabilities on the Company’s Condensed Consolidated Balance Sheets. Refer to Note 8.

Fair Value of Financial Instrum

Fair Value of Financial Instruments and Fair Value Measurements	6 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments and Fair Value Measurements	Fair Value of Financial Instruments and Fair Value MeasurementsThe estimated fair values of financial instruments are determined based on relevant market information. These estimates involve uncertainty and cannot be determined with precision. The carrying amounts for cash and cash equivalents, trade accounts receivable, net, prepaid expenses and other current assets, short-term and long-term restricted cash, short-term and long-term deposits, trade accounts payable, short-term and long-term dividend payable, and accrued expenses and other current liabilities approximate fair value as of June 30, 2022 and December 31, 2021 due to the short maturity of these instruments. The following tables set forth by level, within the fair value hierarchy, the Company’s long-term debt and acquisition-related obligations at fair value as of June 30, 2022 and December 31, 2021: June 30, 2022 Carrying Amount (1) Total Fair Value Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Environmental Settlement Obligations $ 3,803 $ 3,757 $ — $ — $ 3,757 December 31, 2021 Carrying Amount (1) Total Fair Value Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Term Loan Credit Facility - due June 2024 $ 443,241 $ 447,561 $ — $ 447,561 $ — Environmental Settlement Obligations $ 6,400 $ 6,270 $ — $ — $ 6,270 (1) Net of debt discounts and debt issuance costs. The following table sets forth by level, within the fair value hierarchy, the Company’s financial and non-financial assets and liabilities that were accounted for at fair value on a recurring basis as of June 30, 2022 and December 31, 2021. Financial and non-financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the determination of fair value for assets and liabilities and their placement within the fair value hierarchy levels. June 30, 2022 Total Fair Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Contingent Revenue Obligation $ 32,408 $ — $ — $ 32,408 Trading securities $ 94,794 $ — $ 94,794 $ — December 31, 2021 Total Fair Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Contingent Revenue Obligation $ 35,005 $ — $ — $ 35,005 Trading securities $ 28,443 $ 27,075 $ 1,368 $ — The following tables present a reconciliation of the financial and non-financial assets and liabilities that were accounted for at fair value on a recurring basis and that were categorized within Level 3 of the fair value hierarchy: December 31, 2021 Payments Loss (Gain) Recognized in Earnings (1) Transfer In (Out) of Level 3 Fair Value Hierarchy June 30, 2022 Contingent Revenue Obligation $ 35,005 $ (16,166) $ 13,569 $ — $ 32,408 (1) The loss recognized in earnings resulted primarily from an increase in forecasted future revenue as of June 30, 2022. December 31, 2020 Payments Loss (Gain) Recognized in Earnings (1) Transfer In (Out) of Level 3 Fair Value Hierarchy June 30, 2021 Contingent Revenue Obligation $ 28,967 $ (11,396) $ 6,333 $ — $ 23,904 (1) The loss recognized in earnings resulted primarily from a decrease in the annual risk-free interest rate as of June 30, 2021. The following methods and assumptions were used to estimate the fair values of the assets and liabilities in the tables above: Level 1 Fair Value Measurements Trading Securities - Typically includes money market funds and other cash equivalents. The fair value is based on observable market data. Level 2 Fair Value Measurements Term Loan Credit Facility - due June 2024 - The fair value was based on the average between bid and ask prices provided by a third-party. As the fair value was based on observable market inputs and due to limited trading volume in the Term Loan Credit Facility, the Company had classified the fair value within Level 2 of the fair value hierarchy. Effective June 3, 2022, the Term Loan Credit Facility was terminated. Refer to Note 9 for additional information. Trading Securities - Typically includes certificates of deposit, mutual funds, corporate debt securities, and U.S. treasury and agency securities. The fair values of the Company’s trading securities are obtained from a third-party pricing service provider. The fair values provided by the pricing service provider are based on observable market inputs including credit spreads and broker-dealer quotes, among other inputs. The Company classifies the prices obtained from the pricing services within Level 2 of the fair value hierarchy because the underlying inputs are directly observable from active markets. However, the pricing models used entail a certain amount of subjectivity and therefore differing judgments in how the underlying inputs are modeled could result in different estimates of fair value. Level 3 Fair Value Measurements Environmental Settlement Obligations - Observable transactions are not available to aid in determining the fair value of these items. Therefore, the fair value was derived by using the expected present value approach in which estimated cash flows are discounted using a risk-free interest rate adjusted for credit risk (discount rates of approximately 14% and 13% as of June 30, 2022 and December 31, 2021, respectively). Contingent Revenue Obligation - The fair value of the contingent revenue obligation was estimated using a Black-Scholes pricing model and is marked to market at each reporting period with changes in value reflected in earnings. The inputs included in the Black-Scholes pricing model are the Company's forecasted future revenue, the stated royalty rate, the remaining periods in the obligation, annual risk-free interest rate based on the U.S. Constant Maturity Treasury Curve and annualized volatility. The annualized volatility was calculated by observing volatilities for comparable companies with adjustments for the Company's size and leverage. The range of significant unobservable inputs used to value the Contingent Revenue Obligation as of June 30, 2022 and December 31, 2021, are set forth in the following table: June 30, 2022 December 31, 2021 Forecasted future revenue $3.5 billion $1.5 - $2.0 billion Stated royalty rate 1.0% - 1.5% 1.0% - 1.5% Annualized volatility 22.1% - 42.2% (34.9%) 18.4% - 39.3% (29.9%)

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesFor the six months ended June 30, 2022, the Company recorded income tax expense of $108,636 on income from continuing operations before income taxes of $1,085,069. The income tax expense differs from the expected statutory amount primarily due to the decrease in the valuation allowance and the permanent impact of percentage depletion and foreign-derived intangible income deductions, partially offset by the impact of state income taxes, net of federal impact. For the six months ended June 30, 2021, the Company recorded income tax expense of $3 on a loss from continuing operations before income taxes of $51,278. The income tax expense differs from the expected statutory amount primarily due to the increase in the valuation allowance and the impact of state income taxes, net of federal impact, partially offset by the permanent impact of percentage depletion deductions. As a result of generating income before income taxes during the six months ended June 30, 2022, the Company recorded a decrease of $47,365 to its deferred tax asset valuation allowance recorded as of December 31, 2021. The decrease in the valuation allowance results in part from a decrease in deferred tax assets since the prior reporting date of December 31, 2021. The Company currently is relying primarily on the reversal of taxable temporary differences, along with consideration of taxable income via carryback to prior years and tax planning strategies, to support the realization of deferred tax assets. For each reporting period, the Company updates its assessment regarding the realizability of its deferred tax assets, including scheduling the reversal of its deferred tax assets and liabilities, to determine the amount of valuation allowance needed. Scheduling the reversal of deferred tax asset and liability balances requires judgment and estimation. The Company believes the deferred tax liabilities relied upon as future taxable income in its assessment will reverse in the same period and jurisdiction and are of the same character as the temporary differences giving rise to the deferred tax assets that will be realized. The valuation allowance recorded represents the portion of deferred tax assets for which the Company is unable to support realization through the methods described above. During the six months ended June 30, 2022, the Company paid estimated federal and state income taxes of $109,074. As of June 30, 2022, the Company has recorded a current federal income taxes receivable of $12,064, classified as Prepaid expenses and other current assets in the Condensed Consolidated Balance Sheets.

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2022
Compensation Related Costs [Abstract]
Employee Benefit Plans	Employee Benefit Plans The components of net periodic benefit (credit) cost other than the service cost component for black lung are included in the line item miscellaneous income, net in the Condensed Consolidated Statements of Operations. Pension The following table details the components of the net periodic benefit credit for pension obligations: Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Interest cost $ 4,006 $ 3,362 $ 7,990 $ 6,784 Expected return on plan assets (7,181) (7,119) (14,366) (14,366) Amortization of net actuarial loss 571 734 1,055 1,609 Net periodic benefit credit $ (2,604) $ (3,023) $ (5,321) $ (5,973) During the three months ended June 30, 2022, an annual census data actuarial revaluation of pension obligations was performed, which resulted in an increase in the liability for pension obligations of approximately $4,837 with the offset to accumulated other comprehensive gain and a slight decrease in net periodic benefit to be recognized subsequent to the revaluation date. An annual census data actuarial revaluation of pension obligations was also performed during the three months ended June 30, 2021, which resulted in a decrease in the liability for pension obligations of approximately $8,838 with the offset to accumulated other comprehensive gain and a slight increase in net periodic benefit to be recognized subsequent to the revaluation date. Black Lung The following table details the components of the net periodic benefit cost for black lung obligations: Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Service cost $ 654 $ 739 $ 1,308 $ 1,478 Interest cost 665 607 1,330 1,214 Expected return on plan assets (13) (14) (26) (28) Amortization of net actuarial loss 209 522 418 1,044 Net periodic benefit cost $ 1,515 $ 1,854 $ 3,030 $ 3,708

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2022
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions There were no material related party transactions for the six months ended June 30, 2022 or 2021.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies (a) General Estimated losses from loss contingencies are accrued by a charge to income when information available indicates that it is probable that an asset has been impaired or a liability has been incurred and the amount of the loss can be reasonably estimated. If a loss contingency is not probable or reasonably estimable, disclosure of the loss contingency is made in the Condensed Consolidated Financial Statements when it is at least reasonably possible that a loss may be incurred and that the loss could be material. (b) Commitments and Contingencies Commitments The Company leases coal mining and other equipment under long-term financing and operating leases with varying terms. In addition, the Company leases mineral interests and surface rights from landowners under various terms and royalty rates. Coal royalty expense was $72,627 and $21,281 for the three months ended June 30, 2022 and 2021, respectively. Coal royalty expense was $129,970 and $40,039 for the six months ended June 30, 2022 and 2021, respectively. Other Commitments As of June 30, 2022, the Company has obligations under certain coal purchase agreements that contain minimum quantities to be purchased in the remainder of 2022 and 2023 totaling an estimated $82,185 and $12,099, respectively. The Company also has obligations under certain unconditional purchase obligations totaling $62,095, $59,319, and $86,850 in the remainder of 2022, 2023, and 2024, respectively. Contingencies Extensive regulation of the impacts of mining on the environment and of maintaining workplace safety has had, and is expected to continue to have, a significant effect on the Company’s costs of production and results of operations. Further regulations, legislation or litigation in these areas may also cause the Company’s sales or profitability to decline by increasing costs or by hindering the Company’s ability to continue mining at existing operations or to permit new operations. During the normal course of business, contract-related matters arise between the Company and its customers. When a loss related to such matters is considered probable and can reasonably be estimated, the Company records a liability. As of June 30, 2022, per terms of the Cumberland Back-to-Back Coal Supply Agreements, the Company is required to purchase and sell 1,342 tons of coal in the remainder of 2022 totaling $51,860. For the three months ended June 30, 2022 and 2021, the Company purchased and sold 258 and 760 tons, respectively, totaling $9,936 and $29,487, respectively, under the Cumberland Back-to-Back Coal Supply Agreements. For the six months ended June 30, 2022 and 2021, the Company purchased and sold 677 and 1,460 tons, respectively, totaling $26,121 and $56,553, respectively, under the Cumberland Back-to-Back Coal Supply Agreements. As of June 30, 2022, the Cumberland Back-to-Back Coal Supply Agreements are scheduled to be fully performed by December 31, 2022. (c) Guarantees and Financial Instruments with Off-Balance Sheet Risk In the normal course of business, the Company is a party to certain guarantees and financial instruments with off-balance sheet risk, such as bank letters of credit, performance or surety bonds, and other guarantees and indemnities related to the obligations of affiliated entities which are not reflected in the Company’s Condensed Consolidated Balance Sheets. However, the underlying liabilities that they secure, such as asset retirement obligations, workers’ compensation liabilities, and royalty obligations, are reflected in the Company’s Condensed Consolidated Balance Sheets. The Company is required to provide financial assurance in order to perform the post-mining reclamation required by its mining permits, pay workers’ compensation claims under workers’ compensation laws in various states, pay federal black lung benefits, and perform certain other obligations. In order to provide the required financial assurance, the Company generally uses surety bonds for post-mining reclamation and workers’ compensation obligations. The Company can also use bank letters of credit to collateralize certain obligations. As of June 30, 2022, the Company had $63,898 letters of credit outstanding under the Second Amended and Restated Asset-Based Revolving Credit Agreement. Additionally, as of June 30, 2022, the Company had $50 in letters of credit outstanding under the Credit and Security Agreement dated June 30, 2017, and related amendments, between ANR, Inc. and First Tennessee Bank National Association. As of June 30, 2022, the Company had outstanding surety bonds with a total face amount of $162,339 to secure various obligations and commitments. To secure the Company’s reclamation-related obligations, the Company has $34,678 of collateral in the form of restricted cash, restricted investments, and deposits supporting these obligations as of June 30, 2022. The Company meets frequently with its surety providers and has discussions with certain providers regarding the extent of and the terms of their participation in the program. These discussions may cause the Company to shift surety bonds between providers or to alter the terms of their participation in our program. To the extent that surety bonds become unavailable or the Company’s surety bond providers require additional collateral, the Company would seek to secure its obligations with letters of credit, cash deposits or other suitable forms of collateral. The Company’s failure to maintain, or inability to acquire, surety bonds or to provide a suitable alternative would have a material adverse effect on its liquidity. These failures could result from a variety of factors including lack of availability, higher cost or unfavorable market terms of new surety bonds, and the exercise by third-party surety bond issuers of their right to refuse to renew the surety. Amounts included in restricted cash provide collateral to secure the following obligations: June 30, 2022 December 31, 2021 Workers’ compensation and black lung obligations $ 15,755 $ 70,637 Reclamation-related obligations 929 10,449 Financial payments and other performance obligations 8,236 8,340 Contingent Revenue Obligation escrow 9,848 11,977 Total restricted cash 34,768 101,403 Less current portion (1) (9,848) (11,977) Restricted cash, net of current portion $ 24,920 $ 89,426 (1) Included within Prepaid expenses and other current assets on the Company’s Condensed Consolidated Balance Sheets. Amounts included in restricted investments provide collateral to secure the following obligations: June 30, 2022 December 31, 2021 Workers’ compensation obligations $ 59,195 $ 210 Reclamation-related obligations 33,639 26,225 Financial payments and other performance obligations 1,960 2,008 Total restricted investments (1) $ 94,794 $ 28,443 (1) Classified as trading securities as of June 30, 2022 and December 31, 2021. Amounts included in deposits provide collateral to secure the following obligations: June 30, 2022 December 31, 2021 Reclamation-related obligations $ 110 $ 118 Financial payments and other performance obligations 391 403 Other operating agreements 865 873 Total deposits (1) $ 1,366 $ 1,394 (1) Included within Prepaid expenses and other current assets and Other non-current assets on the Company’s Condensed Consolidated Balance Sheets. DCMWC Reauthorization Process In July 2019, the U.S. Department of Labor (Division of Coal Mine Workers’ Compensation or “DCMWC”) began implementing a new authorization process for all self-insured coal mine operators. As requested by the DCMWC, the Company filed an application and supporting documentation for reauthorization to self-insure certain of its black lung obligations in October 2019. As a result of this application, the DCMWC notified the Company in a letter dated February 21, 2020 that the Company was reauthorized to self-insure certain of its black lung obligations for a period of one-year from February 21, 2020. The DCMWC reauthorization is contingent, however, upon the Company’s providing collateral of $65,700 to secure certain of its black lung obligations. This proposed collateral requirement is an increase from the approximate $2,600 in collateral that the Company currently provides to secure these self-insured black lung obligations. The reauthorization process provided the Company with the right to appeal the security determination in writing within 30 days of the date of the notification, which appeal period the DCMWC agreed to extend to May 22, 2020. The Company exercised this right of appeal in connection with the substantial increase in the amount of required collateral. In February 2021, the U.S. Department of Labor (“DOL”) withdrew its Federal Register notice seeking comments on its bulletin describing its new method of calculating collateral requirements. The Department removed the bulletin from its website in May 2021. On February 10, 2022, a telephone conference was held with DCMWC and DOL decision makers wherein the Company presented facts and arguments in support of its appeal. No ruling has been made on the appeal, but during the call the Company indicated that it would be willing to allocate an additional $10,000 in collateral. If the Company’s appeal is unsuccessful, the Company may be required to provide additional letters of credit to receive the self-insurance reauthorization from the DCMWC or alternatively insure these black lung obligations through a third party provider that would likely also require the Company to provide additional collateral. Either of these outcomes could potentially reduce the Company’s liquidity. (d) Legal Proceedings The Company is party to legal proceedings from time to time. These proceedings, as well as governmental examinations, could involve various business units and a variety of claims including, but not limited to, contract disputes, personal injury claims, property damage claims (including those resulting from blasting, trucking and flooding), environmental and safety issues, securities-related matters and employment matters. While some legal matters may specify the damages claimed by the plaintiffs, many seek an unquantified amount of damages. Even when the amount of damages claimed against the Company or its subsidiaries is stated, (i) the claimed amount may be exaggerated or unsupported; (ii) the claim may be based on a novel legal theory or involve a large number of parties; (iii) there may be uncertainty as to the likelihood of a class being certified or the ultimate size of the class; (iv) there may be uncertainty as to the outcome of pending appeals or motions; and/or (v) there may be significant factual issues to be resolved. As a result, if such legal matters arise in the future, the Company may be unable to estimate a range of possible loss for matters that have not yet progressed sufficiently through discovery and development of important factual information and legal issues. The Company records accruals based on an estimate of the ultimate outcome of these matters, but these estimates can be difficult to determine and involve significant judgment.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2022
Segment Reporting [Abstract]
Segment Information	Segment Information The Company extracts, processes and markets met and thermal coal from deep and surface mines for sale to steel and coke producers, industrial customers, and electric utilities. The Company conducts mining operations only in the United States with mines in Central Appalachia (“CAPP”). The Company has one reportable segment: Met, which consists of five active mines and two preparation plants in Virginia, fourteen active mines and five preparation plants in West Virginia, as well as expenses associated with certain idled/closed mines. In addition to the one reportable segment, the All Other category includes general corporate overhead and corporate assets and liabilities, the former CAPP - Thermal operations consisting of one active mine and one preparation plant in West Virginia, and the elimination of certain intercompany activity, as well as expenses associated with certain idled/closed mines. Reportable segment operating results are regularly reviewed by the Chief Operating Decision Maker (“CODM”), who is the Chief Executive Officer of the Company. Segment operating results and capital expenditures for the three months ended June 30, 2022 and 2021 were as follows: Three Months Ended June 30, 2022 Met All Other Consolidated Total revenues $ 1,319,941 $ 16,471 $ 1,336,412 Depreciation, depletion, and amortization $ 27,203 $ 527 $ 27,730 Amortization of acquired intangibles, net $ 4,795 $ 952 $ 5,747 Adjusted EBITDA $ 706,232 $ (11,704) $ 694,528 Capital expenditures $ 40,059 $ 1,807 $ 41,866 Three Months Ended June 30, 2021 Met All Other Consolidated Total revenues $ 377,937 $ 17,338 $ 395,275 Depreciation, depletion, and amortization $ 25,686 $ 1,618 $ 27,304 Amortization of acquired intangibles, net $ 2,635 $ (82) $ 2,553 Adjusted EBITDA $ 46,786 $ (6,869) $ 39,917 Capital expenditures $ 17,203 $ 441 $ 17,644 Segment operating results and capital expenditures for the six months ended June 30, 2022 and 2021 were as follows: Six Months Ended June 30, 2022 Met All Other Consolidated Total revenues $ 2,375,630 $ 32,746 $ 2,408,376 Depreciation, depletion, and amortization $ 54,263 $ 1,502 $ 55,765 Amortization of acquired intangibles, net $ 9,591 $ 1,904 $ 11,495 Adjusted EBITDA $ 1,219,533 $ (21,198) $ 1,198,335 Capital expenditures $ 67,356 $ 2,656 $ 70,012 Six Months Ended June 30, 2021 Met All Other Consolidated Total revenues $ 737,815 $ 43,713 $ 781,528 Depreciation, depletion, and amortization $ 52,222 $ 3,520 $ 55,742 Amortization of acquired intangibles, net $ 6,686 $ (264) $ 6,422 Adjusted EBITDA $ 79,368 $ (10,568) $ 68,800 Capital expenditures $ 37,526 $ 513 $ 38,039 The following tables present a reconciliation of net income (loss) to Adjusted EBITDA for the three months ended June 30, 2022 and 2021: Three Months Ended June 30, 2022 Met All Other Consolidated Net income (loss) from continuing operations $ 670,801 $ (95,372) $ 575,429 Interest expense 43 5,175 5,218 Interest income — (164) (164) Income tax expense — 69,012 69,012 Depreciation, depletion and amortization 27,203 527 27,730 Non-cash stock compensation expense — 1,401 1,401 Mark-to-market adjustment - acquisition-related obligations — 4,208 4,208 Accretion on asset retirement obligations 3,390 2,557 5,947 Amortization of acquired intangibles, net 4,795 952 5,747 Adjusted EBITDA $ 706,232 $ (11,704) $ 694,528 Three Months Ended June 30, 2021 Met All Other Consolidated Net income (loss) from continuing operations $ 15,042 $ (33,632) $ (18,590) Interest expense 40 17,922 17,962 Interest income — (104) (104) Income tax expense — 8 8 Depreciation, depletion and amortization 25,686 1,618 27,304 Non-cash stock compensation expense 6 973 979 Mark-to-market adjustment - acquisition-related obligations — 3,157 3,157 Accretion on asset retirement obligations 3,377 3,271 6,648 Amortization of acquired intangibles, net 2,635 (82) 2,553 Adjusted EBITDA $ 46,786 $ (6,869) $ 39,917 The following tables present a reconciliation of net income (loss) to Adjusted EBITDA for the six months ended June 30, 2022 and 2021: Six Months Ended June 30, 2022 Met All Other Consolidated Net income (loss) from continuing operations $ 1,148,968 $ (172,535) $ 976,433 Interest expense 92 18,209 18,301 Interest income (172) (176) (348) Income tax expense — 108,636 108,636 Depreciation, depletion and amortization 54,263 1,502 55,765 Non-cash stock compensation expense 3 2,580 2,583 Mark-to-market adjustment - acquisition-related obligations — 13,569 13,569 Accretion on asset retirement obligations 6,788 5,113 11,901 Amortization of acquired intangibles, net 9,591 1,904 11,495 Adjusted EBITDA $ 1,219,533 $ (21,198) $ 1,198,335 Six Months Ended June 30, 2021 Met All Other Consolidated Net income (loss) from continuing operations $ 13,604 $ (64,885) $ (51,281) Interest expense 83 35,869 35,952 Interest income (5) (263) (268) Income tax expense — 3 3 Depreciation, depletion and amortization 52,222 3,520 55,742 Non-cash stock compensation expense 16 3,146 3,162 Mark-to-market adjustment - acquisition-related obligations — 6,333 6,333 Accretion on asset retirement obligations 6,762 6,534 13,296 Asset impairment and restructuring — (561) (561) Amortization of acquired intangibles, net 6,686 (264) 6,422 Adjusted EBITDA $ 79,368 $ (10,568) $ 68,800 No asset information has been disclosed as the CODM does not regularly review asset information by reportable segment. The Company markets produced, processed and purchased coal to customers in the United States and in international markets. Revenue is tracked within the Company’s accounting records based on the product destination. The following tables present additional information on our revenues and top customers: Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Total coal revenues $ 1,334,258 $ 393,458 $ 2,403,996 $ 778,910 Export coal revenues $ 1,146,003 $ 256,017 $ 2,040,528 $ 499,800 Export coal revenues as % of total coal revenues 86 % 65 % 85 % 64 % Countries with export coal revenue exceeding 10% of total revenue India India India India, Brazil Top customer as % of total revenue 33 % 13 % 31 % 12 % Top 10 customers as % of total revenue 77 % 69 % 74 % 64 % Number of customers exceeding 10% of total revenue 1 1 1 2 As of June 30, 2022 2021 Number of customers exceeding 10% of total trade accounts receivable, net 2 2

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On August 4, 2022, the Company’s Board declared a quarterly cash dividend payment of $0.392 per share which will become payable on October 3, 2022 for holders of record as of September 15, 2022. The quarterly cash dividend payment was increased to $0.392 from the previously announced estimate of $0.375. Refer to Note 7 for information regarding the Company’s dividend program.

Business and Basis of Present_2

Business and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Together, the condensed consolidated statements of operations, comprehensive income (loss), balance sheets, cash flows and stockholders’ equity for the Company are referred to as the “Condensed Consolidated Financial Statements.” The Condensed Consolidated Financial Statements are also referenced across periods as “Condensed Consolidated Statements of Operations,” “Condensed Consolidated Statements of Comprehensive Income (Loss),” “Condensed Consolidated Balance Sheets,” “Condensed Consolidated Statements of Cash Flows,” and “Condensed Consolidated Statements of Stockholders’ Equity.” The Company’s former Northern Appalachia (“NAPP”) operations results of operations and financial position are reported as discontinued operations in the Condensed Consolidated Financial Statements. Refer to Note 2 for further information on discontinued operations. The Condensed Consolidated Financial Statements include all wholly-owned subsidiaries’ results of operations for the three and six months ended June 30, 2022 and 2021. All significant intercompany transactions have been eliminated in consolidation.
Reclassifications	ReclassificationsCertain amounts in the prior year Condensed Consolidated Statements of Cash Flows have been reclassified to conform to the current year presentation.
Recent Adopted Accounting Guidance	Recently Adopted Accounting Guidance Fair Value Measurement: In June 2022, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (“ASU 2022-03”). This update clarifies how the fair value of equity securities subject to contractual sale restrictions is determined. Per the update, a contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and is not considered in measuring fair value. Additionally, the update requires entities with investments in equity securities subject to contractual sale restrictions to disclose certain qualitative and quantitative information about such securities. The amendments are effective for fiscal years beginning after December 15, 2023, with early application permitted. The Company adopted ASU 2022-03 during the second quarter of 2022. The adoption of this ASU did not have a material impact on the Company’s Condensed Consolidated Financial Statements and related disclosures. Financial Instruments: In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures (“ASU 2022-02”). This update eliminates the troubled debt restructuring model for creditors that have adopted Topic 326. All loan modifications will now be accounted for under general loan modification guidance and, on a prospective basis, entities will be subject to new disclosure requirements covering modifications of receivables to borrowers experiencing financial difficulty. In addition, entities will be required to prospectively disclose current-period gross write-off information by year of origination. The amendments are effective for fiscal years beginning after December 15, 2022, with early application permitted. The Company adopted ASU 2022-02 during the first quarter of 2022. The adoption of this ASU did not have a material impact on the Company’s Condensed Consolidated Financial Statements and related disclosures.

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2022
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	The major components of assets and liabilities that are classified as discontinued operations in the Condensed Consolidated Balance Sheets are as follows: June 30, 2022 December 31, 2021 Assets: Prepaid expenses and other current assets $ 70 $ 462 Other non-current assets (1) $ 8,508 $ 8,526 Liabilities: Trade accounts payable, accrued expenses and other current liabilities $ 6,104 $ 5,838 Workers’ compensation and black lung obligations, non-current $ 23,321 $ 23,683 (1) Comprised of workers’ compensation insurance receivable and long-term restricted investments collateralizing workers’ compensation obligations.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables disaggregate the Company’s coal revenues by product category and by market to depict how the nature, amount, timing, and uncertainty of the Company’s coal revenues and cash flows are affected by economic factors: Three Months Ended June 30, 2022 Met Coal Thermal Coal Total Export coal revenues $ 1,135,757 $ 10,246 $ 1,146,003 Domestic coal revenues 162,483 25,772 188,255 Total coal revenues $ 1,298,240 $ 36,018 $ 1,334,258 Three Months Ended June 30, 2021 Met Coal Thermal Coal Total Export coal revenues $ 250,324 $ 5,693 $ 256,017 Domestic coal revenues 105,235 32,206 137,441 Total coal revenues $ 355,559 $ 37,899 $ 393,458 Six Months Ended June 30, 2022 Met Coal Thermal Coal Total Export coal revenues $ 2,023,763 $ 16,765 $ 2,040,528 Domestic coal revenues 322,470 40,998 363,468 Total coal revenues $ 2,346,233 $ 57,763 $ 2,403,996 Six Months Ended June 30, 2021 Met Coal Thermal Coal Total Export coal revenues $ 493,076 $ 6,724 $ 499,800 Domestic coal revenues 205,477 73,633 279,110 Total coal revenues $ 698,553 $ 80,357 $ 778,910
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied as of June 30, 2022: Remainder of 2022 2023 2024 2025 2026 Total Estimated coal revenues $ 23,281 $ 32,919 $ 37,250 $ — $ — $ 93,450

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2022
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following tables summarize the changes to accumulated other comprehensive loss during the six months ended June 30, 2022 and 2021: Balance January 1, 2022 Other comprehensive income (loss) before reclassifications Amounts reclassified from accumulated other comprehensive loss Balance June 30, 2022 Employee benefit costs $ (58,503) $ (4,837) $ 1,636 $ (61,704) Balance January 1, 2021 Other comprehensive income (loss) before reclassifications Amounts reclassified from accumulated other comprehensive loss Balance June 30, 2021 Employee benefit costs $ (111,985) $ 8,838 $ 2,826 $ (100,321) The following table summarizes the amounts reclassified from accumulated other comprehensive loss and the Condensed Consolidated Statements of Operations line items affected by the reclassification during the three and six months ended June 30, 2022 and 2021: Details about accumulated other comprehensive loss components Amounts reclassified from accumulated other comprehensive loss Affected line item in the Condensed Consolidated Statements of Operations Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Employee benefit costs: Amortization of net actuarial loss (1) $ 871 $ 1,342 $ 1,655 $ 2,826 Miscellaneous income, net Settlement (1) (10) — (19) — Miscellaneous income, net Total before income tax $ 861 $ 1,342 $ 1,636 $ 2,826 Income tax — — — — Income tax expense Total, net of income tax $ 861 $ 1,342 $ 1,636 $ 2,826 (1) These accumulated other comprehensive loss components are included in the computation of net periodic benefit costs for certain employee benefit plans. Refer to Note 14.

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2022
Earnings Per Share [Abstract]
Schedule of Net (Loss) Income Per Common Share, Basic and Diluted	The following table presents the net income (loss) per common share for the three and six months ended June 30, 2022 and 2021: Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Net income (loss) Income (loss) from continuing operations $ 575,429 $ (18,590) $ 976,433 $ (51,281) Loss from discontinued operations (1,272) (401) (1,385) (638) Net income (loss) $ 574,157 $ (18,991) $ 975,048 $ (51,919) Basic Weighted average common shares outstanding - basic 18,380,114 18,438,699 18,476,534 18,416,946 Basic income (loss) per common share: Income (loss) from continuing operations $ 31.31 $ (1.01) $ 52.85 $ (2.78) Loss from discontinued operations (0.07) (0.02) (0.08) (0.04) Net income (loss) $ 31.24 $ (1.03) $ 52.77 $ (2.82) Diluted Weighted average common shares outstanding - basic 18,380,114 18,438,699 18,476,534 18,416,946 Diluted effect of warrants 323,087 — 383,180 — Diluted effect of stock options 5,544 — 6,331 — Diluted effect of other stock-based instruments 450,103 — 483,164 — Weighted average common shares outstanding - diluted 19,158,848 18,438,699 19,349,209 18,416,946 Diluted income (loss) per common share: Income (loss) from continuing operations $ 30.03 $ (1.01) $ 50.46 $ (2.78) Loss from discontinued operations (0.06) (0.02) (0.07) (0.04) Net income (loss) $ 29.97 $ (1.03) $ 50.39 $ (2.82)

Inventories, net (Tables)

Inventories, net (Tables)	6 Months Ended
	Jun. 30, 2022
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories, net consisted of the following: June 30, 2022 December 31, 2021 Raw coal $ 35,078 $ 20,347 Saleable coal 96,009 81,240 Materials, supplies and other, net 36,105 27,795 Total inventories, net $ 167,192 $ 129,382

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	6 Months Ended
	Jun. 30, 2022
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consisted of the following: June 30, 2022 December 31, 2021 Wages and benefits $ 73,083 $ 52,310 Workers’ compensation 10,582 10,582 Black lung 7,235 7,235 Taxes other than income taxes 32,876 30,734 Asset retirement obligations 32,668 32,159 Accrued interest and fees 1,412 14,489 Freight accrual 20,911 15,085 Dividend payable 6,836 — Other 14,665 12,013 Total accrued expenses and other current liabilities $ 200,268 $ 174,607

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2022
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Long-term debt consisted of the following: June 30, 2022 December 31, 2021 Term Loan Credit Facility - due June 2024 $ — $ 449,435 Other (1) 4,689 5,311 Debt discount and issuance costs — (6,195) Total long-term debt $ 4,689 $ 448,551 Less current portion (1,927) (2,989) Long-term debt, net of current portion $ 2,762 $ 445,562 (1) Includes financing leases.

Acquisition-Related Obligatio_2

Acquisition-Related Obligations (Tables)	6 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Schedule of Acquisition-Related Obligations	Acquisition-related obligations consisted of the following: June 30, 2022 December 31, 2021 Contingent Revenue Obligation $ 32,408 $ 35,005 Environmental Settlement Obligations 3,849 6,633 Discount (46) (233) Total acquisition-related obligations $ 36,211 $ 41,405 Less current portion (36,211) (22,405) Acquisition-related obligations, net of current portion $ — $ 19,000

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	6 Months Ended
	Jun. 30, 2022
Asset Retirement Obligation Disclosure [Abstract]
Summary of Changes in Asset Retirement Obligations	The following table summarizes the changes in asset retirement obligations for the six months ended June 30, 2022: Total asset retirement obligations at December 31, 2021 $ 164,172 Accretion for the period 11,901 Revisions in estimated cash flows (881) Expenditures for the period (8,578) Total asset retirement obligations at June 30, 2022 166,614 Less current portion (1) (32,668) Long-term portion $ 133,946 (1) Included within Accrued expenses and other current liabilities on the Company’s Condensed Consolidated Balance Sheets. Refer to Note 8.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments and Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements, Nonrecurring	The following tables set forth by level, within the fair value hierarchy, the Company’s long-term debt and acquisition-related obligations at fair value as of June 30, 2022 and December 31, 2021: June 30, 2022 Carrying Amount (1) Total Fair Value Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Environmental Settlement Obligations $ 3,803 $ 3,757 $ — $ — $ 3,757 December 31, 2021 Carrying Amount (1) Total Fair Value Quoted Prices in Active Markets Significant Other Observable Inputs Significant Unobservable Inputs Term Loan Credit Facility - due June 2024 $ 443,241 $ 447,561 $ — $ 447,561 $ — Environmental Settlement Obligations $ 6,400 $ 6,270 $ — $ — $ 6,270 (1) Net of debt discounts and debt issuance costs.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table sets forth by level, within the fair value hierarchy, the Company’s financial and non-financial assets and liabilities that were accounted for at fair value on a recurring basis as of June 30, 2022 and December 31, 2021. Financial and non-financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the determination of fair value for assets and liabilities and their placement within the fair value hierarchy levels. June 30, 2022 Total Fair Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Contingent Revenue Obligation $ 32,408 $ — $ — $ 32,408 Trading securities $ 94,794 $ — $ 94,794 $ — December 31, 2021 Total Fair Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Contingent Revenue Obligation $ 35,005 $ — $ — $ 35,005 Trading securities $ 28,443 $ 27,075 $ 1,368 $ — The following tables present a reconciliation of the financial and non-financial assets and liabilities that were accounted for at fair value on a recurring basis and that were categorized within Level 3 of the fair value hierarchy: December 31, 2021 Payments Loss (Gain) Recognized in Earnings (1) Transfer In (Out) of Level 3 Fair Value Hierarchy June 30, 2022 Contingent Revenue Obligation $ 35,005 $ (16,166) $ 13,569 $ — $ 32,408 (1) The loss recognized in earnings resulted primarily from an increase in forecasted future revenue as of June 30, 2022. December 31, 2020 Payments Loss (Gain) Recognized in Earnings (1) Transfer In (Out) of Level 3 Fair Value Hierarchy June 30, 2021 Contingent Revenue Obligation $ 28,967 $ (11,396) $ 6,333 $ — $ 23,904 (1) The loss recognized in earnings resulted primarily from a decrease in the annual risk-free interest rate as of June 30, 2021.
Range of Significant Unobservable Inputs	The range of significant unobservable inputs used to value the Contingent Revenue Obligation as of June 30, 2022 and December 31, 2021, are set forth in the following table: June 30, 2022 December 31, 2021 Forecasted future revenue $3.5 billion $1.5 - $2.0 billion Stated royalty rate 1.0% - 1.5% 1.0% - 1.5% Annualized volatility 22.1% - 42.2% (34.9%) 18.4% - 39.3% (29.9%)

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2022
Compensation Related Costs [Abstract]
Schedule of Net Periodic Benefit Cost	The following table details the components of the net periodic benefit credit for pension obligations: Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Interest cost $ 4,006 $ 3,362 $ 7,990 $ 6,784 Expected return on plan assets (7,181) (7,119) (14,366) (14,366) Amortization of net actuarial loss 571 734 1,055 1,609 Net periodic benefit credit $ (2,604) $ (3,023) $ (5,321) $ (5,973) Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Service cost $ 654 $ 739 $ 1,308 $ 1,478 Interest cost 665 607 1,330 1,214 Expected return on plan assets (13) (14) (26) (28) Amortization of net actuarial loss 209 522 418 1,044 Net periodic benefit cost $ 1,515 $ 1,854 $ 3,030 $ 3,708

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Schedule of Restricted Cash Deposits	Amounts included in restricted cash provide collateral to secure the following obligations: June 30, 2022 December 31, 2021 Workers’ compensation and black lung obligations $ 15,755 $ 70,637 Reclamation-related obligations 929 10,449 Financial payments and other performance obligations 8,236 8,340 Contingent Revenue Obligation escrow 9,848 11,977 Total restricted cash 34,768 101,403 Less current portion (1) (9,848) (11,977) Restricted cash, net of current portion $ 24,920 $ 89,426 (1) Included within Prepaid expenses and other current assets on the Company’s Condensed Consolidated Balance Sheets.
Schedule of Restricted Investments and Deposit Assets	Amounts included in restricted investments provide collateral to secure the following obligations: June 30, 2022 December 31, 2021 Workers’ compensation obligations $ 59,195 $ 210 Reclamation-related obligations 33,639 26,225 Financial payments and other performance obligations 1,960 2,008 Total restricted investments (1) $ 94,794 $ 28,443 (1) Classified as trading securities as of June 30, 2022 and December 31, 2021. Amounts included in deposits provide collateral to secure the following obligations: June 30, 2022 December 31, 2021 Reclamation-related obligations $ 110 $ 118 Financial payments and other performance obligations 391 403 Other operating agreements 865 873 Total deposits (1) $ 1,366 $ 1,394 (1) Included within Prepaid expenses and other current assets and Other non-current assets on the Company’s Condensed Consolidated Balance Sheets.

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2022
Segment Reporting [Abstract]
Schedule of Segment Operating Results and Capital Expenditures	Segment operating results and capital expenditures for the three months ended June 30, 2022 and 2021 were as follows: Three Months Ended June 30, 2022 Met All Other Consolidated Total revenues $ 1,319,941 $ 16,471 $ 1,336,412 Depreciation, depletion, and amortization $ 27,203 $ 527 $ 27,730 Amortization of acquired intangibles, net $ 4,795 $ 952 $ 5,747 Adjusted EBITDA $ 706,232 $ (11,704) $ 694,528 Capital expenditures $ 40,059 $ 1,807 $ 41,866 Three Months Ended June 30, 2021 Met All Other Consolidated Total revenues $ 377,937 $ 17,338 $ 395,275 Depreciation, depletion, and amortization $ 25,686 $ 1,618 $ 27,304 Amortization of acquired intangibles, net $ 2,635 $ (82) $ 2,553 Adjusted EBITDA $ 46,786 $ (6,869) $ 39,917 Capital expenditures $ 17,203 $ 441 $ 17,644 Segment operating results and capital expenditures for the six months ended June 30, 2022 and 2021 were as follows: Six Months Ended June 30, 2022 Met All Other Consolidated Total revenues $ 2,375,630 $ 32,746 $ 2,408,376 Depreciation, depletion, and amortization $ 54,263 $ 1,502 $ 55,765 Amortization of acquired intangibles, net $ 9,591 $ 1,904 $ 11,495 Adjusted EBITDA $ 1,219,533 $ (21,198) $ 1,198,335 Capital expenditures $ 67,356 $ 2,656 $ 70,012 Six Months Ended June 30, 2021 Met All Other Consolidated Total revenues $ 737,815 $ 43,713 $ 781,528 Depreciation, depletion, and amortization $ 52,222 $ 3,520 $ 55,742 Amortization of acquired intangibles, net $ 6,686 $ (264) $ 6,422 Adjusted EBITDA $ 79,368 $ (10,568) $ 68,800 Capital expenditures $ 37,526 $ 513 $ 38,039 Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Total coal revenues $ 1,334,258 $ 393,458 $ 2,403,996 $ 778,910 Export coal revenues $ 1,146,003 $ 256,017 $ 2,040,528 $ 499,800 Export coal revenues as % of total coal revenues 86 % 65 % 85 % 64 % Countries with export coal revenue exceeding 10% of total revenue India India India India, Brazil Top customer as % of total revenue 33 % 13 % 31 % 12 % Top 10 customers as % of total revenue 77 % 69 % 74 % 64 % Number of customers exceeding 10% of total revenue 1 1 1 2 As of June 30, 2022 2021 Number of customers exceeding 10% of total trade accounts receivable, net 2 2
Reconciliation of Net Income (Loss) to Adjusted EBITDA	The following tables present a reconciliation of net income (loss) to Adjusted EBITDA for the three months ended June 30, 2022 and 2021: Three Months Ended June 30, 2022 Met All Other Consolidated Net income (loss) from continuing operations $ 670,801 $ (95,372) $ 575,429 Interest expense 43 5,175 5,218 Interest income — (164) (164) Income tax expense — 69,012 69,012 Depreciation, depletion and amortization 27,203 527 27,730 Non-cash stock compensation expense — 1,401 1,401 Mark-to-market adjustment - acquisition-related obligations — 4,208 4,208 Accretion on asset retirement obligations 3,390 2,557 5,947 Amortization of acquired intangibles, net 4,795 952 5,747 Adjusted EBITDA $ 706,232 $ (11,704) $ 694,528 Three Months Ended June 30, 2021 Met All Other Consolidated Net income (loss) from continuing operations $ 15,042 $ (33,632) $ (18,590) Interest expense 40 17,922 17,962 Interest income — (104) (104) Income tax expense — 8 8 Depreciation, depletion and amortization 25,686 1,618 27,304 Non-cash stock compensation expense 6 973 979 Mark-to-market adjustment - acquisition-related obligations — 3,157 3,157 Accretion on asset retirement obligations 3,377 3,271 6,648 Amortization of acquired intangibles, net 2,635 (82) 2,553 Adjusted EBITDA $ 46,786 $ (6,869) $ 39,917 The following tables present a reconciliation of net income (loss) to Adjusted EBITDA for the six months ended June 30, 2022 and 2021: Six Months Ended June 30, 2022 Met All Other Consolidated Net income (loss) from continuing operations $ 1,148,968 $ (172,535) $ 976,433 Interest expense 92 18,209 18,301 Interest income (172) (176) (348) Income tax expense — 108,636 108,636 Depreciation, depletion and amortization 54,263 1,502 55,765 Non-cash stock compensation expense 3 2,580 2,583 Mark-to-market adjustment - acquisition-related obligations — 13,569 13,569 Accretion on asset retirement obligations 6,788 5,113 11,901 Amortization of acquired intangibles, net 9,591 1,904 11,495 Adjusted EBITDA $ 1,219,533 $ (21,198) $ 1,198,335 Six Months Ended June 30, 2021 Met All Other Consolidated Net income (loss) from continuing operations $ 13,604 $ (64,885) $ (51,281) Interest expense 83 35,869 35,952 Interest income (5) (263) (268) Income tax expense — 3 3 Depreciation, depletion and amortization 52,222 3,520 55,742 Non-cash stock compensation expense 16 3,146 3,162 Mark-to-market adjustment - acquisition-related obligations — 6,333 6,333 Accretion on asset retirement obligations 6,762 6,534 13,296 Asset impairment and restructuring — (561) (561) Amortization of acquired intangibles, net 6,686 (264) 6,422 Adjusted EBITDA $ 79,368 $ (10,568) $ 68,800

Discontinued Operations - Narra

Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Discontinued Operations and Disposal Groups [Abstract]
Loss from discontinued operations before income taxes	$ (1,652)	$ (401)	$ (1,798)	$ (638)

Discontinued Operations - Major

Discontinued Operations - Major Components of Asset and Liabilities (Details) - Cumberland Transaction - Discontinued Operations - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets:
Prepaid expenses and other current assets	$ 70	$ 462
Other non-current assets	8,508	8,526
Liabilities:
Trade accounts payable, accrued expenses and other current liabilities	6,104	5,838
Workers’ compensation and black lung obligations, non-current	$ 23,321	$ 23,683

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 1,334,258	$ 393,458	$ 2,403,996	$ 778,910
Coal
Disaggregation of Revenue [Line Items]
Revenues	1,334,258	393,458	2,403,996	778,910
Met Coal
Disaggregation of Revenue [Line Items]
Revenues	1,298,240	355,559	2,346,233	698,553
Thermal Coal
Disaggregation of Revenue [Line Items]
Revenues	36,018	37,899	57,763	80,357
Export | Coal
Disaggregation of Revenue [Line Items]
Revenues	1,146,003	256,017	2,040,528	499,800
Export | Met Coal
Disaggregation of Revenue [Line Items]
Revenues	1,135,757	250,324	2,023,763	493,076
Export | Thermal Coal
Disaggregation of Revenue [Line Items]
Revenues	10,246	5,693	16,765	6,724
Domestic | Coal
Disaggregation of Revenue [Line Items]
Revenues	188,255	137,441	363,468	279,110
Domestic | Met Coal
Disaggregation of Revenue [Line Items]
Revenues	162,483	105,235	322,470	205,477
Domestic | Thermal Coal
Disaggregation of Revenue [Line Items]
Revenues	$ 25,772	$ 32,206	$ 40,998	$ 73,633

Revenue - Performance Obligatio

Revenue - Performance Obligations (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Disaggregation of Revenue [Line Items]
Estimated coal revenues	$ 93,450
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Estimated coal revenues	$ 23,281
Revenue, remaining performance obligation, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Estimated coal revenues	$ 32,919
Revenue, remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Disaggregation of Revenue [Line Items]
Estimated coal revenues	$ 37,250
Revenue, remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Disaggregation of Revenue [Line Items]
Estimated coal revenues	$ 0
Revenue, remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Disaggregation of Revenue [Line Items]
Estimated coal revenues	$ 0
Revenue, remaining performance obligation, period	1 year

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Changes to Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 546,909	$ 200,102
Ending balance	1,319,573	162,331
Employee benefit costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(58,503)	(111,985)
Other comprehensive income (loss) before reclassifications	(4,837)	8,838
Amounts reclassified from accumulated other comprehensive loss	1,636	2,826
Ending balance	$ (61,704)	$ (100,321)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss - Summary of Amounts Reclassified (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Employee benefit costs:
Miscellaneous income, net	$ 1,385		$ 1,847		$ 3,182	$ 3,613
Income (loss) from continuing operations before income taxes	644,441		(18,582)		1,085,069	(51,278)
Income tax	(69,012)		(8)		(108,636)	(3)
Net income (loss)	574,157	$ 400,891	(18,991)	$ (32,928)	975,048	(51,919)
Amounts reclassified from accumulated other comprehensive loss | Amortization of actuarial loss
Employee benefit costs:
Miscellaneous income, net	871		1,342		1,655	2,826
Amounts reclassified from accumulated other comprehensive loss | Settlement
Employee benefit costs:
Miscellaneous income, net	(10)		0		(19)	0
Amounts reclassified from accumulated other comprehensive loss | Employee benefit costs
Employee benefit costs:
Income (loss) from continuing operations before income taxes	861		1,342		1,636	2,826
Income tax	0		0		0	0
Net income (loss)	$ 861		$ 1,342		$ 1,636	$ 2,826

Net Income (Loss) Per Share - N

Net Income (Loss) Per Share - Narrative (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	942,549	0	948,398
Weighted-average antidilutive securities excluded from computation of earnings per share (in shares)		313,640		301,684

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Schedule of Net (Loss) Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income (loss)
Income (loss) from continuing operations	$ 575,429		$ (18,590)		$ 976,433	$ (51,281)
Loss from discontinued operations	(1,272)		(401)		(1,385)	(638)
Net income (loss)	$ 574,157	$ 400,891	$ (18,991)	$ (32,928)	$ 975,048	$ (51,919)
Basic
Weighted average common shares outstanding - basic (in shares)	18,380,114		18,438,699		18,476,534	18,416,946
Basic income (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	$ 31.31		$ (1.01)		$ 52.85	$ (2.78)
Loss from discontinued operations (in dollars per share)	(0.07)		(0.02)		(0.08)	(0.04)
Net income (loss) (in dollars per share)	$ 31.24		$ (1.03)		$ 52.77	$ (2.82)
Diluted
Weighted average common shares outstanding - basic (in shares)	18,380,114		18,438,699		18,476,534	18,416,946
Diluted effect of warrants (in shares)	323,087		0		383,180	0
Weighted average common shares outstanding - diluted (in shares)	19,158,848		18,438,699		19,349,209	18,416,946
Diluted income (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	$ 30.03		$ (1.01)		$ 50.46	$ (2.78)
Loss from discontinued operations (in dollars per share)	(0.06)		(0.02)		(0.07)	(0.04)
Net income (loss) (in dollars per share)	$ 29.97		$ (1.03)		$ 50.39	$ (2.82)
Stock Options
Diluted
Dilutive effect of share-based payment awards (in shares)	5,544		0		6,331	0
Other Stock-Based Instruments
Diluted
Dilutive effect of share-based payment awards (in shares)	450,103		0		483,164	0

Inventories, net (Details)

Inventories, net (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Inventory [Line Items]
Total inventories, net	$ 167,192	$ 129,382
Coal
Inventory [Line Items]
Raw coal	35,078	20,347
Saleable coal	96,009	81,240
Material, supplies and other, net
Inventory [Line Items]
Materials, supplies and other, net	$ 36,105	$ 27,795

Capital Stock - Share Repurchas

Capital Stock - Share Repurchase Program (Details) - USD ($)	4 Months Ended
	Jun. 30, 2022	May 03, 2022	Mar. 04, 2022
Equity [Abstract]
Authorized share repurchases		$ 600,000,000	$ 150,000,000
Number of shares repurchased	1,309,362
Total share repurchase price	$ 192,859,000
Value of shares repurchased	192,820,000
Shares repurchased, fees	$ 39,000

Capital Stock - Dividend Progra

Capital Stock - Dividend Program (Details) - USD ($) $ / shares in Units, $ in Thousands	May 03, 2022	Jun. 30, 2022	Dec. 31, 2021
Equity [Abstract]
Dividends payable intended but not yet declared (in dollars per share)	$ 1.50
Dividends intended but not yet declared (in dollars per share)	$ 0.375
Dividend payable		$ 6,977
Dividend payable		6,836	$ 0
Dividends payable, noncurrent		$ 141

Capital Stock - Warrants (Detai

Capital Stock - Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 15, 2022	Jun. 14, 2022	Jul. 26, 2016
Equity [Abstract]
Number of warrants outstanding (in shares)	263,718	801,370	263,718	801,370			810,811
Exercise price of warrants (in dollars per share)					$ 46.804	$ 46.911
Number of securities called by each warrant (in shares)					1.15
Number of securities called by outstanding warrants (in shares)	303,276	921,576	303,276	921,576
Shares issued upon exercise of warrants (in shares)	553,296	0	618,157	0
Shares withheld upon exercise of warrants (in shares)	168,155		168,246
Amount reclassified as treasury stock	$ 16,644		$ 16,651

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Wages and benefits	$ 73,083	$ 52,310
Workers’ compensation	10,582	10,582
Black lung	7,235	7,235
Taxes other than income taxes	32,876	30,734
Asset retirement obligations	32,668	32,159
Accrued interest and fees	1,412	14,489
Freight accrual	20,911	15,085
Dividend payable	6,836	0
Other	14,665	12,013
Total accrued expenses and other current liabilities	$ 200,268	$ 174,607

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Debt discount and issuance costs	$ 0	$ (6,195)
Total long-term debt	4,689	448,551
Less current portion	(1,927)	(2,989)
Long-term debt, net of current portion	2,762	445,562
Term Loan | Term Loan Credit Facility - due June 2024
Debt Instrument [Line Items]
Total long-term debt, gross	0	449,435
Other
Debt Instrument [Line Items]
Total long-term debt, gross	$ 4,689	$ 5,311

Long-Term Debt - Term Loan Cred

Long-Term Debt - Term Loan Credit Facility (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Term Loan Credit Facility - due June 2024 | Term Loan
Debt Instrument [Line Items]
Payment of borrowings	$ 449,435
Term Loan | Term Loan Credit Facility - due June 2024
Debt Instrument [Line Items]
Outstanding borrowings		$ 443,241
Line of Credit | Term Loan Credit Facility - due June 2024 | Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding borrowings	0
Line of Credit | ABL Facility - due December 2024 | Revolving Credit Facility
Debt Instrument [Line Items]
Outstanding borrowings	$ 0	$ 0

Long-Term Debt - Second Amended

Long-Term Debt - Second Amended and Restated Asset-Based Revolving Credit Agreement (Details) - New ABL Facility - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Dec. 06, 2021
Line of Credit
Debt Instrument [Line Items]
Letters of credit outstanding	$ 63,898	$ 121,037
Revolving Credit Facility
Debt Instrument [Line Items]
Amount of credit facility			$ 155,000
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Outstanding borrowings	0	$ 0
Letters of credit outstanding	$ 63,898
Letter of Credit
Debt Instrument [Line Items]
Amount of credit facility			150,000
Amount of credit facility on committed basis			125,000
Amount of credit facility on uncommitted basis			$ 25,000

Acquisition-Related Obligatio_3

Acquisition-Related Obligations - Summary of Acquisition-Related Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Option, Quantitative Disclosures [Line Items]
Discount	$ (46)	$ (233)
Total acquisition-related obligations	36,211	41,405
Less current portion	(36,211)	(22,405)
Acquisition-related obligations, net of current portion	0	19,000
Contingent Revenue Obligation
Fair Value, Option, Quantitative Disclosures [Line Items]
Total acquisition-related obligations - long-term, gross	32,408	35,005
Total acquisition-related obligations	32,408	35,005
Less current portion	(32,408)	(16,005)
Environmental Settlement Obligations
Fair Value, Option, Quantitative Disclosures [Line Items]
Total acquisition-related obligations - long-term, gross	$ 3,849	$ 6,633

Acquisition-Related Obligatio_4

Acquisition-Related Obligations - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Business Acquisition, Contingent Consideration [Line Items]
Acquisition related obligations	$ 36,211	$ 41,405
Acquisition related obligations, current	36,211	22,405
Contingent Revenue Obligation
Business Acquisition, Contingent Consideration [Line Items]
Acquisition related obligations	32,408	35,005
Acquisition related obligations, current	$ 32,408	$ 16,005

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Total asset retirement obligations at December 31, 2021			$ 164,172
Accretion for the period	$ 5,947	$ 6,648	11,901	$ 13,296
Revisions in estimated cash flows			(881)
Expenditures for the period			(8,578)
Total asset retirement obligations at June 30, 2022	166,614		166,614		$ 164,172
Less current portion	(32,668)		(32,668)		(32,159)
Long-term portion	$ 133,946		$ 133,946		$ 132,013

Fair Value of Financial Instr_3

Fair Value of Financial Instruments and Fair Value Measurements - Total Long-Term Debt & Acquisition Related Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Carrying Amount | Environmental Settlement Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt	$ 3,803	$ 6,400
Carrying Amount | Term Loan | Term Loan Credit Facility - due June 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt		443,241
Fair Value, Measurements, Nonrecurring | Total Fair Value | Environmental Settlement Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt	3,757	6,270
Fair Value, Measurements, Nonrecurring | Total Fair Value | Quoted Prices in Active Markets (Level 1) | Environmental Settlement Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt	0	0
Fair Value, Measurements, Nonrecurring | Total Fair Value | Significant Other Observable Inputs (Level 2) | Environmental Settlement Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt	0	0
Fair Value, Measurements, Nonrecurring | Total Fair Value | Significant Unobservable Inputs (Level 3) | Environmental Settlement Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt	$ 3,757	6,270
Fair Value, Measurements, Nonrecurring | Total Fair Value | Term Loan | Term Loan Credit Facility - due June 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt		447,561
Fair Value, Measurements, Nonrecurring | Total Fair Value | Term Loan | Term Loan Credit Facility - due June 2024 | Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt		0
Fair Value, Measurements, Nonrecurring | Total Fair Value | Term Loan | Term Loan Credit Facility - due June 2024 | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt		447,561
Fair Value, Measurements, Nonrecurring | Total Fair Value | Term Loan | Term Loan Credit Facility - due June 2024 | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long term debt		$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments and Fair Value Measurements - Schedule of Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Contingent Revenue Obligation	$ 32,408	$ 35,005
Trading securities	94,794	28,443
Quoted Prices in Active Markets (Level 1)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Contingent Revenue Obligation	0	0
Trading securities	0	27,075
Significant Other Observable Inputs (Level 2)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Contingent Revenue Obligation	0	0
Trading securities	94,794	1,368
Significant Unobservable Inputs (Level 3)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Contingent Revenue Obligation	32,408	35,005
Trading securities	$ 0	$ 0

Fair Value of Financial Instr_5

Fair Value of Financial Instruments and Fair Value Measurements - Level 3 of the Fair Value Hierarchy (Details) - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance	$ 35,005	$ 28,967
Payments	(16,166)	(11,396)
Loss (Gain) Recognized in Earnings	13,569	6,333
Transfer In (Out) of Level 3 Fair Value Hierarchy	0	0
Ending balance	$ 32,408	$ 23,904

Fair Value of Financial Instr_6

Fair Value of Financial Instruments and Fair Value Measurements - Narrative (Details)	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate | Environmental Settlement Obligations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt and acquisition-related obligations, measurement input	0.14	0.13

Fair Value of Financial Instr_7

Fair Value of Financial Instruments and Fair Value Measurements - Unobservable Inputs (Details) - Black Scholes - Contingent Revenue Obligation $ in Billions	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Forecasted future revenue
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Forecasted future revenue	$ 3.5
Forecasted future revenue | Minimum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Forecasted future revenue		$ 1.5
Forecasted future revenue | Maximum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Forecasted future revenue		$ 2
Stated royalty rate | Minimum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related obligation, measurement input	0.010	0.010
Stated royalty rate | Maximum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related obligation, measurement input	0.015	0.015
Annualized volatility | Minimum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related obligation, measurement input	0.221	0.184
Annualized volatility | Maximum
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related obligation, measurement input	0.422	0.393
Annualized volatility | Weighted Average
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related obligation, measurement input	0.349	0.299

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 69,012	$ 8	$ 108,636	$ 3
Income (loss) from continuing operations before income taxes	644,441	$ (18,582)	1,085,069	$ (51,278)
Decrease in deferred tax asset valuation allowance			47,365
Income taxes paid			109,074
Income taxes receivable, current	$ 12,064		$ 12,064

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	$ 4,006	$ 3,362	$ 7,990	$ 6,784
Expected return on plan assets	(7,181)	(7,119)	(14,366)	(14,366)
Amortization of net actuarial loss	571	734	1,055	1,609
Net periodic benefit credit	(2,604)	(3,023)	(5,321)	(5,973)
Increase (decrease) in liability for pension obligations	4,837	(8,838)
Black Lung
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	654	739	1,308	1,478
Interest cost	665	607	1,330	1,214
Expected return on plan assets	(13)	(14)	(26)	(28)
Amortization of net actuarial loss	209	522	418	1,044
Net periodic benefit credit	$ 1,515	$ 1,854	$ 3,030	$ 3,708

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) T in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) T	Jun. 30, 2021 USD ($) T	Jun. 30, 2022 USD ($) T	Jun. 30, 2021 USD ($) T	Feb. 10, 2022 USD ($)	Dec. 31, 2021 USD ($)	Feb. 21, 2020 USD ($)	Feb. 20, 2020 USD ($)
Long-term Purchase Commitment [Line Items]
Coal royalty expense	$ 72,627	$ 21,281	$ 129,970	$ 40,039
Unconditional purchase obligations, remainder of fiscal year	62,095		62,095
Unconditional purchase obligations, year one	59,319		59,319
Unconditional purchase obligations, year two	86,850		86,850
Black Lung
Long-term Purchase Commitment [Line Items]
Collateral for black lung obligations					$ 10,000		$ 65,700	$ 2,600
Surety Bond
Long-term Purchase Commitment [Line Items]
Outstanding surety bonds	162,339		162,339
Reclamation-Related Obligations | Collateral Pledged
Long-term Purchase Commitment [Line Items]
Restricted cash, restricted investments, and deposits	34,678		34,678
Line of Credit | New ABL Facility
Long-term Purchase Commitment [Line Items]
Letters of credit outstanding	63,898		63,898			$ 121,037
Revolving Credit Facility | Line of Credit | New ABL Facility
Long-term Purchase Commitment [Line Items]
Letters of credit outstanding	63,898		63,898
Revolving Credit Facility | Line of Credit | Credit and Security Agreement
Long-term Purchase Commitment [Line Items]
Letters of credit outstanding	$ 50		$ 50
Cumberland Back-to-Back Coal Supply Agreements
Long-term Purchase Commitment [Line Items]
Purchase and sale contingency, mass purchases and sales, remainder of year (in tons) | T	1,342		1,342
Purchase and sale contingency, mass purchases and sales, remainder of year	$ 51,860		$ 51,860
Purchase and sale contingency, mass purchased and sold (in tons) | T	258	760	677	1,460
Purchase and sale contingency, mass purchased and sold, amount	$ 9,936	$ 29,487	$ 26,121	$ 56,553
Coal Purchase Agreements
Long-term Purchase Commitment [Line Items]
Minimum quantities to be purchased, remainder of 2022	82,185		82,185
Minimum quantities to be purchased, next year	$ 12,099		$ 12,099

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Restricted Cash Deposits (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Long-term Purchase Commitment [Line Items]
Total restricted cash	$ 34,768	$ 101,403
Less current portion	(9,848)	(11,977)	$ (3,794)
Long-term restricted cash	24,920	89,426	$ 92,758
Workers’ compensation and black lung obligations
Long-term Purchase Commitment [Line Items]
Total restricted cash	15,755	70,637
Reclamation-related obligations
Long-term Purchase Commitment [Line Items]
Total restricted cash	929	10,449
Financial payments and other performance obligations
Long-term Purchase Commitment [Line Items]
Total restricted cash	8,236	8,340
Contingent Revenue Obligation escrow
Long-term Purchase Commitment [Line Items]
Total restricted cash	$ 9,848	$ 11,977

Commitments and Contingencies_3

Commitments and Contingencies - Schedule of Restricted Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Long-term Purchase Commitment [Line Items]
Total restricted investments	$ 94,794	$ 28,443
Workers’ compensation obligations
Long-term Purchase Commitment [Line Items]
Total restricted investments	59,195	210
Reclamation-related obligations
Long-term Purchase Commitment [Line Items]
Total restricted investments	33,639	26,225
Financial payments and other performance obligations
Long-term Purchase Commitment [Line Items]
Total restricted investments	$ 1,960	$ 2,008

Commitments and Contingencies_4

Commitments and Contingencies - Cash Deposits Held by Third Parties (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Long-term Purchase Commitment [Line Items]
Total deposits	$ 1,366	$ 1,394
Reclamation-related obligations
Long-term Purchase Commitment [Line Items]
Total deposits	110	118
Financial payments and other performance obligations
Long-term Purchase Commitment [Line Items]
Total deposits	391	403
Other operating agreements
Long-term Purchase Commitment [Line Items]
Total deposits	$ 865	$ 873

Segment Information - Schedule

Segment Information - Schedule of Operating Results and Capital Expenditures (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) mine plant segment	Jun. 30, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			1
Total revenues	$ 1,336,412	$ 395,275	$ 2,408,376	$ 781,528
Depreciation, depletion and amortization	27,730	27,304	55,765	55,742
Amortization of acquired intangibles, net	5,747	2,553	11,495	6,422
Adjusted EBITDA	694,528	39,917	1,198,335	68,800
Capital expenditures	41,866	17,644	70,012	38,039
Operating Segments | Met
Segment Reporting Information [Line Items]
Total revenues	1,319,941	377,937	2,375,630	737,815
Depreciation, depletion and amortization	27,203	25,686	54,263	52,222
Amortization of acquired intangibles, net	4,795	2,635	9,591	6,686
Adjusted EBITDA	706,232	46,786	1,219,533	79,368
Capital expenditures	40,059	17,203	$ 67,356	37,526
Operating Segments | Met | Virginia
Segment Reporting Information [Line Items]
Number of active mines | mine			5
Number of preparation plants | plant			2
Operating Segments | Met | West Virginia
Segment Reporting Information [Line Items]
Number of active mines | mine			14
Number of preparation plants | plant			5
All Other
Segment Reporting Information [Line Items]
Total revenues	16,471	17,338	$ 32,746	43,713
Depreciation, depletion and amortization	527	1,618	1,502	3,520
Amortization of acquired intangibles, net	952	(82)	1,904	(264)
Adjusted EBITDA	(11,704)	(6,869)	(21,198)	(10,568)
Capital expenditures	$ 1,807	$ 441	$ 2,656	$ 513
All Other | West Virginia
Segment Reporting Information [Line Items]
Number of active mines | mine			1
Number of preparation plants | plant			1

Segment Information - Reconcili

Segment Information - Reconciliation of Net Income (Loss) to Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income (loss) from continuing operations	$ 575,429	$ (18,590)	$ 976,433	$ (51,281)
Interest expense	5,218	17,962	18,301	35,952
Interest income	(164)	(104)	(348)	(268)
Income tax expense	69,012	8	108,636	3
Depreciation, depletion and amortization	27,730	27,304	55,765	55,742
Non-cash stock compensation expense	1,401	979	2,583	3,162
Mark-to-market adjustment for acquisition-related obligations	4,208	3,157	13,569	6,333
Accretion on asset retirement obligations	5,947	6,648	11,901	13,296
Asset impairment and restructuring	0	0	0	(561)
Amortization of acquired intangibles, net	5,747	2,553	11,495	6,422
Adjusted EBITDA	694,528	39,917	1,198,335	68,800
Operating Segments | Met
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income (loss) from continuing operations	670,801	15,042	1,148,968	13,604
Interest expense	43	40	92	83
Interest income	0	0	(172)	(5)
Income tax expense	0	0	0	0
Depreciation, depletion and amortization	27,203	25,686	54,263	52,222
Non-cash stock compensation expense	0	6	3	16
Mark-to-market adjustment for acquisition-related obligations	0	0	0	0
Accretion on asset retirement obligations	3,390	3,377	6,788	6,762
Asset impairment and restructuring				0
Amortization of acquired intangibles, net	4,795	2,635	9,591	6,686
Adjusted EBITDA	706,232	46,786	1,219,533	79,368
All Other
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net income (loss) from continuing operations	(95,372)	(33,632)	(172,535)	(64,885)
Interest expense	5,175	17,922	18,209	35,869
Interest income	(164)	(104)	(176)	(263)
Income tax expense	69,012	8	108,636	3
Depreciation, depletion and amortization	527	1,618	1,502	3,520
Non-cash stock compensation expense	1,401	973	2,580	3,146
Mark-to-market adjustment for acquisition-related obligations	4,208	3,157	13,569	6,333
Accretion on asset retirement obligations	2,557	3,271	5,113	6,534
Asset impairment and restructuring				(561)
Amortization of acquired intangibles, net	952	(82)	1,904	(264)
Adjusted EBITDA	$ (11,704)	$ (6,869)	$ (21,198)	$ (10,568)

Segment Information - Revenue f

Segment Information - Revenue from External Customers (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) customer	Jun. 30, 2021 USD ($) customer	Jun. 30, 2022 USD ($) customer	Jun. 30, 2021 USD ($) customer
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues | $	$ 1,334,258	$ 393,458	$ 2,403,996	$ 778,910
Export Coal Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues | $	$ 1,146,003	$ 256,017	$ 2,040,528	$ 499,800
Revenues | Geographic Concentration Risk | Export Coal Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk (as a percent)	86%	65%	85%	64%
Revenues | Customer Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of customers exceeding 10% of total trade accounts receivable, net | customer	1	1	1	2
Revenues | Customer Concentration Risk | Top Customer
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk (as a percent)	33%	13%	31%	12%
Revenues | Customer Concentration Risk | Top 10 Customers
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk (as a percent)	77%	69%	74%	64%
Accounts Receivable | Customer Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of customers exceeding 10% of total trade accounts receivable, net | customer			2	2

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares			3 Months Ended
	Aug. 04, 2022	May 03, 2022	Jun. 30, 2022
Subsequent Event [Line Items]
Common stock dividends (in dollars per share)			$ 0.375
Dividends intended but not yet declared (in dollars per share)		$ 0.375
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends (in dollars per share)	$ 0.392