Warrior Met Coal (HCC) 10-Q 29 Apr 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2020	Apr. 24, 2020
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-38061
Entity Registrant Name	Warrior Met Coal, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	81-0706839
Entity Address, Address Line One	16243 Highway 216
Entity Address, City or Town	Brookwood
Entity Address, State or Province	AL
Entity Address, Postal Zip Code	35444
City Area Code	205
Local Phone Number	554-6150
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		51,167,697
Entity Central Index key	0001691303
Document Fiscal Year Focus	2020
Amendment Flag	false
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	HCC
Security Exchange Name	NYSE
Preferred Stock
Document Information [Line Items]
Title of 12(b) Security	Rights to Purchase Series A Junior Participating Preferred Stock, par value $0.01 per share
Security Exchange Name	NYSE
No Trading Symbol Flag	true

CONDENSED STATEMENTS OF OPERATI

CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Total revenues	$ 226,720	$ 378,290
Costs and expenses:
Cost of sales (exclusive of items shown separately below)	151,514	182,628
Cost of other revenues (exclusive of items shown separately below)	7,561	7,745
Depreciation and depletion	28,692	22,233
Selling, general and administrative	8,456	8,905
Total costs and expenses	196,223	221,511
Operating income	30,497	156,779
Interest expense, net	(7,533)	(8,592)
Loss on early extinguishment of debt	0	(9,756)
Other income	1,822	0
Income before income tax expense	24,786	138,431
Income tax expense	3,241	27,984
Net income	$ 21,545	$ 110,447
Basic and diluted net income per share:
Net income per share—basic (in dollars per share)	$ 0.42	$ 2.14
Net income per share—diluted (in dollars per share)	$ 0.42	$ 2.14
Weighted average number of shares outstanding—basic (in shares)	51,106	51,511
Weighted average number of shares outstanding—diluted (in shares)	51,273	51,630
Dividends per share (in dollars per share)	$ 0.05	$ 0.05
Sales
Revenues:
Total revenues	$ 221,338	$ 369,681
Other revenues
Revenues:
Total revenues	$ 5,382	$ 8,609

CONDENSED BALANCE SHEETS

CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 256,743	$ 193,383
Short-term investments	8,500	14,675
Trade accounts receivable	131,526	99,471
Income tax receivable	24,274	12,925
Inventories, net	117,563	97,901
Prepaid expenses and other receivables	25,925	25,691
Total current assets	564,531	444,046
Mineral interests, net	107,432	110,130
Property, plant and equipment, net	598,622	606,200
Non-current income tax receivable	0	11,349
Deferred income taxes	151,021	154,297
Other long-term assets	17,568	18,242
Total assets	1,439,174	1,344,264
Current liabilities:
Accounts payable	54,620	46,436
Accrued expenses	63,476	65,755
Short term financing lease liabilities	8,022	10,146
Other current liabilities	6,608	6,615
Current portion of long-term debt	0	0
Total current liabilities	132,726	128,952
Long-term debt	409,363	339,189
Asset retirement obligations	54,307	53,583
Long term financing lease liabilities	26,106	25,528
Other long-term liabilities	31,550	31,430
Total liabilities	654,052	578,682
Commitments and contingencies
Stockholders’ Equity:
Common stock, $0.01 par value per share (Authorized -140,000,000 shares as of March 31, 2020 and December 31, 2019, 53,387,591 issued and 51,165,750 outstanding as of March 31, 2020 and 53,293,449 issued and 51,071,608 outstanding as of December 31, 2019)	533	533
Preferred stock, $0.01 par value per share (10,000,000 shares authorized, no shares issued and outstanding)	0	0
Treasury stock, at cost (2,221,841 shares as of March 31, 2020 and December 31, 2019)	(50,576)	(50,576)
Additional paid in capital	244,525	243,932
Retained earnings	590,640	571,693
Total stockholders’ equity	785,122	765,582
Total liabilities and stockholders’ equity	$ 1,439,174	$ 1,344,264

CONDENSED BALANCE SHEETS (Paren

CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock shares authorized (in shares)	140,000,000	140,000,000
Common stock shares issued (in shares)	53,387,591	53,293,449
Common stock shares outstanding (in shares)	51,165,750	51,071,608
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock shares authorized (in shares)	10,000,000	10,000,000
Preferred stock shares issued (in shares)	0	0
Preferred stock shares outstanding (in shares)	0	0
Treasury stock (in shares)	2,221,841,000	2,221,841,000

CONDENSED STATEMENT OF CHANGES

CONDENSED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - USD ($)	Total	Common Stock	Preferred Stock	Treasury Stock	Additional Paid in Capital	Retained Earnings
Balance at beginning of period at Dec. 31, 2018		$ 533,000	$ 0	$ (38,030,000)	$ 239,827,000	$ 510,282,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock purchase				(1,970,000)
Stock compensation					1,108,000
Dividends paid						(2,606,000)
Other					(527,000)
Net income	$ 110,447,000					110,447,000
Balance at end of period at Mar. 31, 2019	819,064,000	533,000	0	(40,000,000)	240,408,000	618,123,000
Balance at beginning of period at Dec. 31, 2019	765,582,000	533,000	0	(50,576,000)	243,932,000	571,693,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock purchase				0
Stock compensation					1,605,000
Dividends paid						(2,598,000)
Other					(1,012,000)
Net income	21,545,000					21,545,000
Balance at end of period at Mar. 31, 2020	$ 785,122,000	$ 533,000	$ 0	$ (50,576,000)	$ 244,525,000	$ 590,640,000

CONDENSED STATEMENTS OF CASH FL

CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES
Net income	$ 21,545	$ 110,447
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and depletion	28,692	22,233
Deferred income tax expense	3,276	27,984
Stock based compensation expense	1,733	1,194
Amortization of debt issuance costs and debt discount/premium, net	351	381
Accretion of asset retirement obligations	733	812
Loss on early extinguishment of debt	0	9,756
Changes in operating assets and liabilities:
Trade accounts receivable	(32,055)	(44,329)
Income tax receivable	0	297
Inventories	(17,326)	(10,823)
Prepaid expenses and other receivables	(235)	10,167
Accounts payable	15,614	10,640
Accrued expenses and other current liabilities	(3,538)	(15,133)
Other	2,232	2,782
Net cash provided by operating activities	21,022	126,408
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(22,775)	(24,395)
Deferred mine development costs	(3,677)	(5,578)
Proceeds from sale of property, plant and equipment	0	234
Sale of short-term investments	14,733	0
Purchases of short-term investments	(8,500)	0
Net cash used in investing activities	(20,219)	(29,739)
FINANCING ACTIVITIES
Dividends paid	(2,598)	(2,606)
Borrowings under ABL Facility	70,000	0
Retirements of debt	0	(140,272)
Principal repayments of finance lease obligations	(3,833)	(1,957)
Common shares repurchased	0	(1,970)
Other	(1,012)	(527)
Net cash provided by (used in) financing activities	62,557	(147,332)
Net increase (decrease) in cash and cash equivalents and restricted cash	63,360	(50,663)
Cash and cash equivalents and restricted cash at beginning of period	193,383	206,405
Cash and cash equivalents and restricted cash at end of period	$ 256,743	$ 155,742

Business and Basis of Presentat

Business and Basis of Presentation	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation	Business and Basis of Presentation Description of the Business Warrior Met Coal, Inc. (the "Company") is a U.S. based environmentally and socially minded supplier to the global steel industry. The Company is dedicated entirely to mining non-thermal met coal used as a critical component of steel production by metal manufacturers in Europe, South America and Asia. The Company also generates ancillary revenues from the sale of natural gas extracted as a byproduct from the underground coal mines and royalty revenues from leased properties. Basis of Presentation The accompanying financial statements are presented in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In our opinion, the financial statements include all adjustments (consisting of normal recurring accruals) necessary in order to make the financial statements not misleading. For further information, refer to the financial statements and related notes included in the Company's Annual Report on Form 10-K for the year ended December 31, 2019 (the "2019 Annual Report"). Operating results for the three months ended March 31, 2020 are not necessarily indicative of the final results that may be expected for the year ended December 31, 2020 . The balance sheet at December 31, 2019 has been derived from the audited financial statements for the year ended December 31, 2019 included in the 2019 Annual Report.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The Company's significant accounting policies are consistent with those disclosed in Note 2 to its audited financial statements included in the 2019 Annual Report, except for changes related to new accounting pronouncements described in "New Accounting Pronouncements." Cash and Cash Equivalents Cash and cash equivalents include short-term deposits and highly liquid investments that have original maturities of three months or less when purchased and are stated at cost, which approximates fair value. Short-Term Investments Instruments with maturities greater than three months, but less than twelve months, are included in short-term investments. The Company purchases United States Treasury ("Treasury") bills with maturities ranging from six to twelve months which are classified as held to maturity and are carried at amortized cost, which approximates fair value. The Company also purchases fixed income securities and certificates of deposits with varying maturities that are classified as available for sale and are carried at fair value. Securities classified as held to maturity are those securities that management has the intent and ability to hold to maturity. As of March 31, 2020 , short-term investments consisted of $8.5 million in cash and fixed income securities. As of December 31, 2019 , the Company’s short-term investments consisted of $14.7 million in cash and fixed income securities. The short-term investments are posted as collateral for the self-insured black lung related claims asserted by or on behalf of former employees of Walter Energy, Inc. ("Walter Energy") and its subsidiaries, which were assumed by the Company and relate to periods prior to March 31, 2016. Revenue Recognition Revenue is recognized when performance obligations under the terms of a contract with the Company's customers are satisfied; for all contracts this occurs when control of the promised goods have been transferred to its customers. For coal shipments to domestic customers via rail, control is transferred when the railcar is loaded. For coal shipments to international customers via ocean vessel, control is transferred when the vessel is loaded at the Port of Mobile, Alabama. For natural gas sales, control is transferred when the gas has been transferred to the pipeline. Revenue is disaggregated between coal sales within the Company's mining segment and natural gas sales which is included in all other revenues, as disclosed in Note 13. Since February 2017, the Company has had an arrangement with XCoal Energy & Resource ("XCoal") to serve as XCoal's strategic partner for exports of low-volatility hard coking coal. Under this arrangement, XCoal takes title to and markets coal that the Company would historically have sold on the spot market, in an amount of the greater of (i) 10% of the Company's total production during the applicable term of the arrangement or (ii) 250,000 metric tons. During the three months ended March 31, 2020 and 2019 , XCoal accounted for approximately $44.3 million , or 19.9% of total revenues, and $94.9 million , or 25.8% of total revenues, respectively. Trade Accounts Receivable and Allowance for Credit Losses Trade accounts receivable represent customer obligations that are derived from revenue recognized from contracts with customers. Credit is extended based on an evaluation of the individual customer's financial condition. The Company maintains trade credit insurance on the majority of its customers and the geographic regions of coal shipments to these customers. In some instances, the Company requires letters of credit, cash collateral or prepayments from its customers on or before shipment to mitigate the risk of loss. These efforts have consistently resulted in the Company recognizing no historical credit losses. The Company also has never had to have a claim against its trade credit insurance policy. In order to estimate the allowance for credit losses on trade accounts receivable, the Company utilizes an aging approach in which potential impairment is calculated based on how long a receivable has been outstanding (e.g., current, 1-31, 31-60, etc.). The Company calculates an expected credit loss rate based on the Company’s historical credit loss rate, the risk characteristics of our customers, and the current metallurgical coal and steel market environments. As of March 31, 2020, the estimated allowance for credit losses was immaterial and did not have a material impact on the Company's financial statements. New Accounting Pronouncements The Company adopted Accounting Standards Update 2016-13, "Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" as of January 1, 2020 using the modified retrospective approach. The ASU requires the use of an “expected loss” model for instruments measured at amortized cost, in which companies will be required to estimate the lifetime expected credit loss and record an allowance to offset the amortized cost basis, resulting in a net presentation of the amount expected to be collected on the financial asset. The adoption of the new standard did not have a material impact on the Company's financial statements, including accounting policies, processes and systems.

Inventories, net

Inventories, net	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Inventories, net	Inventories, net Inventories, net are summarized as follows (in thousands): March 31, 2020 December 31, 2019 Coal $ 87,684 $ 69,064 Raw materials, parts, supplies and other, net 29,879 28,837 Total inventories, net $ 117,563 $ 97,901

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended March 31, 2020 , the Company utilized a discrete period method to calculate taxes, as it does not believe that the annual effective tax rate method represents a reliable estimate given the current uncertainty surrounding the recent outbreak of the novel coronavirus disease 2019 ("COVID-19") and its impact on the Company's annual guidance. For the three months ended March 31, 2020 , the Company had income tax expense of $3.2 million . The income tax expense represents a noncash expense as the Company continues to utilize its NOLs. The Company had income tax expense of $28.0 million for the three months ended March 31, 2019 . On March 27, 2020, the President of the United States signed and enacted into law the Coronavirus Aid, Relief and Economic Security Act (the "CARES Act"). The CARES Act, among other things, provides temporary relief from certain aspects of the Tax Cuts and Jobs Act of 2017 that had imposed limitations on the utilization of certain losses, interest expense deductions and alternative minimum tax ("AMT") credits. The CARES Act also provides opportunities for businesses to improve their cash flows by obtaining refunds for prior taxable years and reducing their income and deferring payroll tax liabilities for the current taxable year. Specifically, Section 2305 of the CARES Act accelerates the ability to receive refunds of remaining AMT credits for tax years 2019, 2020 and 2021. As a result, the Company recorded an adjustment of approximately $11.3 million to reclassify AMT credits from a non-current income tax receivable to a current income tax receivable, as the Company now expects to receive these refunds this year. The Company now expects to receive approximately $24.3 million

Debt

Debt	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Debt	Debt Debt consisted of the following (in thousands): March 31, 2020 December 31, 2019 Weighted Average Interest Rate at March 31, 2020 Final Maturity Senior Secured Notes $ 343,435 $ 343,435 8% 2024 ABL Borrowings 70,000 — 3.75% 2023 Debt discount/premium, net (4,072 ) (4,246 ) Total debt 409,363 339,189 Less: current debt — — Total long-term debt $ 409,363 $ 339,189 Senior Secured Notes On November 2, 2017, the Company issued $350.0 million aggregate principal amount of its 8.00% Senior Secured Notes due 2024 (the "Original Notes"). It then issued an additional $125.0 million in aggregate principal amount of its 8.00% Senior Secured Notes due 2024 (the “New Notes” and, together with the Original Notes, the "Notes") on March 1, 2018. The New Notes were issued as "Additional Notes" under the indenture dated as of November 2, 2017 (the "Original Indenture"), among the Company, the subsidiary guarantors party thereto and Wilmington Trust, National Association, as trustee and priority lien collateral trustee, as supplemented by the First Supplemental Indenture, dated as of March 1, 2018 (the "First Supplemental Indenture" and, the Original Indenture as supplemented thereby and by the Second Supplemental Indenture, dated as of March 2, 2018, the "Indenture"). The Notes mature on November 1, 2024 and interest is payable on May 1 and November 1 of each year. Offers to Purchase the Notes On February 21, 2019, the Company commenced an offer to purchase (the “Restricted Payment Offer”), in cash, up to $150,000,000 principal amount of its outstanding Notes, at a repurchase price of 103% of the aggregate principal amount of such Notes, plus accrued and unpaid interest with respect to such Notes to, but not including, the date of repurchase (the “Restricted Payment Repurchase Price”). Concurrently with, but separate from, the Restricted Payment Offer, the Company commenced a cash tender offer (the “Tender Offer” and, together with the Restricted Payment Offer, the “Offers”) to purchase up to $150,000,000 principal amount of the Notes at a repurchase price of 104.25% of the aggregate principal amount of such Notes, plus accrued and unpaid interest to, but not including, the date of repurchase (the “TO Repurchase Price”). The Offers expired on March 22, 2019 (the “Expiration Date”). Restricted Payment Offer As of the Expiration Date, $1,900,000 aggregate principal amount of the Notes were validly tendered and not validly withdrawn pursuant to the Restricted Payment Offer. Pursuant to the terms of the Restricted Payment Offer: (1) an automatic pro ration factor of 31.5789% was applied to the $1,900,000 aggregate principal amount of the Notes that were validly tendered and not validly withdrawn in the Restricted Payment Offer (rounded down to avoid the purchase of Notes in a principal amount other than in integrals of $1,000 ), which resulted in $599,000 aggregate principal amount of the Notes (the “RP Pro-Rated Tendered Notes”); (2) the Company accepted all $599,000 aggregate principal amount of the RP Pro-Rated Tendered Notes for payment of the Restricted Payment Repurchase Price in cash; and (3) the remaining balance of $1,301,000 aggregate principal amount of the Notes tendered that were not RP Pro-Rated Tendered Notes were not accepted for payment and were returned to the tendering holder of the Notes. The Company consummated the Restricted Payment Offer on March 25, 2019. Accordingly, pursuant to the terms of the Indenture, the Company was permitted to make one or more restricted payments in the form of special dividends to holders of the Company’s common stock and/or repurchases of the Company’s common stock in the aggregate amount of up to $299,401,000 (the "RP Basket") without having to make another offer to repurchase Notes. The Company used a portion of the RP Basket to pay a special cash dividend totaling approximately $230.0 million , which was paid to stockholders on May 14, 2019 and intends to use the remainder of the RP Basket to make repurchases under the Stock Repurchase Program (as defined below). Tender Offer As of the Expiration Date, $415,099,000 aggregate principal amount of the Notes were validly tendered and not validly withdrawn pursuant to the Tender Offer. Pursuant to the terms of the Tender Offer: (1) an automatic pro ration factor of 31.5789% was applied to the $415,099,000 aggregate principal amount of the Notes that were validly tendered and not validly withdrawn in the Tender Offer (rounded down to avoid the purchase of Notes in a principal amount other than in integrals of $1,000 ), which resulted in $130,966,000 aggregate principal amount of the Notes (the “TO Pro-Rated Tendered Notes”); (2) the Company accepted all $130,966,000 aggregate principal amount of the TO Pro-Rated Tendered Notes for payment of the TO Repurchase Price in cash; and (3) the remaining balance of $284,133,000 aggregate principal amount of the Notes tendered that were not TO Pro-Rated Tendered Notes were not accepted for payment and were returned to the tendering holder of the Notes. The Company consummated the Tender Offer on March 26, 2019. In connection with the payments for the RP Pro-Rated Tendered Notes and the TO Pro-Rated Tendered Notes, the Company recognized a loss on early extinguishment of debt of $9.8 million during the three months ended March 31, 2019. ABL Facility On March 24, 2020, the Company borrowed $70.0 million in a partial draw of the ABL Facility (the “ABL Draw”) as a precautionary measure in order to increase the Company’s cash position and preserve financial flexibility in light of the current uncertainty resulting from the COVID-19 outbreak. In accordance with the terms of the ABL Facility, the proceeds from the ABL Draw will be available to be used, if needed, for working capital and general corporate purposes. The Company believes that the $256.7 million of cash on hand as of March 31, 2020

Other Long-Term Liabilities

Other Long-Term Liabilities	3 Months Ended
	Mar. 31, 2020
Other Liabilities Disclosure [Abstract]
Other Long-Term Liabilities	Other Long-Term Liabilities Other long-term liabilities are summarized as follows (in thousands): March 31, 2020 December 31, 2019 Black lung obligations $ 29,871 $ 30,233 Other 1,679 1,197 Total other long-term liabilities $ 31,550 $ 31,430

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	Leases The Company primarily enters into rental agreements for certain mining equipment that are for periods of 12 months or less, some of which include options to extend the leases. Leases that are for periods of 12 months or less are not recorded on the balance sheet. The Company recognizes lease expense on these agreements on a straight-line basis over the lease term. Additionally, the Company has certain finance leases for mining equipment that expire over various contractual periods. The leases have remaining lease terms of one to five years . These leases do not include an option to renew. Amortization expense for finance leases is included in depreciation and depletion expense. Supplemental balance sheet information related to leases was as follows (in thousands): March 31, 2020 December 31, 2019 Finance lease right-of-use assets, net (1) $ 39,516 $ 40,227 Finance lease liabilities Current 8,022 10,146 Noncurrent 26,106 25,528 Total finance lease liabilities $ 34,128 $ 35,674 Weighted average remaining lease term - finance leases (in months) 42.7 44.7 Weighted average discount rate - finance leases (2) 5.86 % 6.02 % (1) Finance lease right-of-use assets are recorded net of accumulated amortization of $7.8 million and $4.8 million and are included in property, plant and equipment, net in the Condensed Balance Sheet as of March 31, 2020 and the Balance Sheet as of December 31, 2019, respectively. (2) When an implicit discount rate is not readily available in a lease, the Company uses its incremental borrowing rate based on information available at the commencement date when determining the present value of lease payments. The components of lease expense were as follows (in thousands): For the three months ended 2020 2019 Operating lease cost (1): $ 292 $ 144 Finance lease cost: Amortization of leased assets 2,998 1,957 Interest on lease liabilities 546 13 Net lease cost $ 3,836 $ 2,114 (1) Includes leases that are for periods of 12 months or less. Maturities of lease liabilities were as follows (in thousands): Finance Leases (1) 2020 $ 7,978 2021 13,089 2022 8,558 2023 8,558 2024 842 Thereafter — Total 39,025 Less: amount representing interest (4,897 ) Present value of lease liabilities $ 34,128 (1) Finance lease payments include $4.5 million of future payments required under signed lease agreements that have not yet commenced. Supplemental cash flow information related to leases was as follows (in thousands): For the three months ended 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 546 $ 13 Financing cash flows from finance leases $ 3,833 $ 1,957 Non-cash right-of-use assets obtained in exchange for lease obligations: Finance leases $ 2,286 $ 2,086 As of March 31, 2020 , the Company had additional commitments for finance leases, primarily for mining equipment, that have not yet commenced of $4.5 million . These finance leases will commence between fiscal year 2020 and 2021 with lease terms of one to two years .
Leases	Leases The Company primarily enters into rental agreements for certain mining equipment that are for periods of 12 months or less, some of which include options to extend the leases. Leases that are for periods of 12 months or less are not recorded on the balance sheet. The Company recognizes lease expense on these agreements on a straight-line basis over the lease term. Additionally, the Company has certain finance leases for mining equipment that expire over various contractual periods. The leases have remaining lease terms of one to five years . These leases do not include an option to renew. Amortization expense for finance leases is included in depreciation and depletion expense. Supplemental balance sheet information related to leases was as follows (in thousands): March 31, 2020 December 31, 2019 Finance lease right-of-use assets, net (1) $ 39,516 $ 40,227 Finance lease liabilities Current 8,022 10,146 Noncurrent 26,106 25,528 Total finance lease liabilities $ 34,128 $ 35,674 Weighted average remaining lease term - finance leases (in months) 42.7 44.7 Weighted average discount rate - finance leases (2) 5.86 % 6.02 % (1) Finance lease right-of-use assets are recorded net of accumulated amortization of $7.8 million and $4.8 million and are included in property, plant and equipment, net in the Condensed Balance Sheet as of March 31, 2020 and the Balance Sheet as of December 31, 2019, respectively. (2) When an implicit discount rate is not readily available in a lease, the Company uses its incremental borrowing rate based on information available at the commencement date when determining the present value of lease payments. The components of lease expense were as follows (in thousands): For the three months ended 2020 2019 Operating lease cost (1): $ 292 $ 144 Finance lease cost: Amortization of leased assets 2,998 1,957 Interest on lease liabilities 546 13 Net lease cost $ 3,836 $ 2,114 (1) Includes leases that are for periods of 12 months or less. Maturities of lease liabilities were as follows (in thousands): Finance Leases (1) 2020 $ 7,978 2021 13,089 2022 8,558 2023 8,558 2024 842 Thereafter — Total 39,025 Less: amount representing interest (4,897 ) Present value of lease liabilities $ 34,128 (1) Finance lease payments include $4.5 million of future payments required under signed lease agreements that have not yet commenced. Supplemental cash flow information related to leases was as follows (in thousands): For the three months ended 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 546 $ 13 Financing cash flows from finance leases $ 3,833 $ 1,957 Non-cash right-of-use assets obtained in exchange for lease obligations: Finance leases $ 2,286 $ 2,086 As of March 31, 2020 , the Company had additional commitments for finance leases, primarily for mining equipment, that have not yet commenced of $4.5 million . These finance leases will commence between fiscal year 2020 and 2021 with lease terms of one to two years .

Net Income per Share

Net Income per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Net Income per Share	Net Income per Share Basic and diluted net income per share was calculated as follows (in thousands, except per share data): For the three months ended 2020 2019 Numerator: Net income $ 21,545 $ 110,447 Denominator: Weighted-average shares used to compute net income per share—basic 51,106 51,511 Dilutive restrictive stock awards 167 119 Weighted-average shares used to compute net income per share—diluted 51,273 51,630 Net income per share—basic and diluted $ 0.42 $ 2.14 Net income per share—diluted $ 0.42 $ 2.14 2017 Equity Plan On February 13, 2020, the Company awarded 420,303 restricted stock unit awards under the Company's 2017 Equity Incentive Plan (the "2017 Equity Plan"). These awards have certain service-based, performance-based and market-based vesting conditions, as applicable. The service-based awards vest over a period of three years and the performance-based and market-based awards are based on the Company's performance in each of the three years . The Company recognized approximately $0.5 million in stock compensation expense associated with these awards for the three months ended March 31, 2020 . As of March 31, 2020 , there were 248,294 restricted stock unit awards for which the service-based vesting conditions for these awards were not met as of the measurement date. As such, these awards were excluded from basic earnings per share. These awards had a 23,295 share impact on dilutive weighted average shares for the three months ended March 31, 2020 . As of March 31, 2020 , there were 454,130 restricted stock unit awards for which the performance-based and market-based vesting conditions were not met as of the measurement date and, as such, these awards were excluded from basic and diluted earnings per share. Based on the Company's closing share price on March 31, 2020 , there were 141,243 restricted stock unit awards classified as a liability. The Company considered the impact on diluted earnings as if the award was settled in cash or in shares. These awards had a 87,879 share impact on dilutive weighted average shares for the three months ended March 31, 2020 . As of March 31, 2020 , there were 43,580 shares of the Company's common stock contingently issuable upon the settlement of a vested phantom unit award granted under our 2016 Equity Plan (as defined below) and 13,157 shares of its common stock contingently issuable upon the settlement of a vested restricted stock unit award under the 2017 Equity Plan. The settlement date for these awards is the earlier of a change in control as described in the 2016 Equity Plan or 2017 Equity Plan, as applicable, or five years from the grant date. These awards are vested and, as such, have been included in the weighted average shares used to compute basic and diluted net income per share. 2016 Equity Plan As of March 31, 2020 , there were 73,429 restricted stock unit awards granted under the Company's 2016 Equity Incentive Plan (the "2016 Equity Plan") to certain directors and employees, for which the service-based vesting conditions for these awards were not met as of the measurement date. As such, these awards were excluded from basic earnings per share. These awards had a 55,329 share impact on dilutive weighted average shares for the three months ended March 31, 2020 .

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company owns a 50% interest in Black Warrior Methane (“BWM”) and Black Warrior Transmission (“BWT”), which are accounted for under the proportionate consolidation method and equity method, respectively. The Company has granted the rights to produce and sell methane gas from its coal mines to BWM and BWT. The Company’s net investments in, advances to/from and equity in earnings or loss of BWT are not material to the Company. The Company supplied labor to BWM and incurred costs, including property and liability insurance, to support the joint venture. The Company charged the joint venture for such costs on a monthly basis, which totaled $0.5 million for the three months ended March 31, 2020 and $0.1 million , for the three months ended March 31, 2019 .

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Environmental Matters The Company is subject to a wide variety of laws and regulations concerning the protection of the environment, both with respect to the construction and operation of its plants, mines and other facilities and with respect to remediating environmental conditions that may exist at its own and other properties. The Company believes it is in compliance with federal, state and local environmental laws and regulations. The Company accrues for environmental expenses resulting from existing conditions that relate to past operations when the costs are probable and can be reasonably estimated. As of March 31, 2020 and December 31, 2019 , there were no accruals for environmental matters other than asset retirement obligations for mine reclamation. Miscellaneous Litigation From time to time, the Company is party to lawsuits arising in the ordinary course of their businesses. The Company records costs relating to these matters when a loss is probable and the amount can be reasonably estimated. The effect of the outcome of these matters on the Company’s future results of operations cannot be predicted with certainty as any such effect depends on future results of operations and the amount and timing of the resolution of such matters. As of March 31, 2020 and December 31, 2019 , there were no items accrued for miscellaneous litigation. Walter Canada Settlement Proceeds On July 15, 2015, Walter Energy and certain of its wholly owned U.S. subsidiaries, including Jim Walter Resources, Inc. (“JWR”) filed voluntary petitions for relief under Chapter 11 of Title 11 of the U.S. Bankruptcy Code (the “Chapter 11 Cases”) in the Northern District of Alabama, Southern Division. On December 7, 2015, Walter Energy Canada Holdings, Inc., Walter Canadian Coal Partnership and their Canadian affiliates (collectively “Walter Canada”) applied for and were granted protection under the Companies’ Creditors Arrangement Act (the “CCAA”) pursuant to an Initial Order of the Supreme Court of British Columbia. In connection with the Company’s acquisition of certain core operating assets of Walter Energy, the Company acquired a receivable owed to Walter Energy by Walter Canada for certain shared services provided by Walter Energy to Walter Canada (the “Shared Services Claim”) and a receivable for unpaid interest owed to Walter Energy from Walter Canada in respect of a promissory note (the “Hybrid Debt Claim”). Each of these claims were asserted by the Company in the Walter Canada CCAA proceedings. Walter Energy deemed these receivables to be impaired for the year ended December 31, 2015 and the Company did not assign any value to these receivables in acquisition accounting as collectability was deemed remote. In March 2020, the Company received approximately $1.8 million in settlement proceeds for the Shared Services Claim and Hybrid Debt Claim which is reflected as other income in the Condensed Statement of Operations. These settlement proceeds are in addition to the $22.8 million received in 2019. The collectability of additional amounts, if any, related to the Shared Services Claim and Hybrid Debt Claim depends on the outcome of, and the timing of any resolutions of, the Walter Canada CCAA proceedings and cannot be predicted with certainty. Commitments and Contingencies—Other The Company is party to various transportation and throughput agreements with rail and barge transportation providers and the Alabama State Port Authority. These agreements contain annual minimum tonnage guarantees with respect to coal transported from the mine sites to the Port of Mobile, Alabama, the unloading of rail cars or barges, and the loading of vessels. If the Company does not meet its minimum throughput obligations, which are based on annual minimum amounts, it is required to pay the transportation providers or the Alabama State Port Authority a contractually specified amount per metric ton for the difference between the actual throughput and the minimum throughput requirement. At March 31, 2020 and December 31, 2019 , the Company had no liability recorded for minimum throughput requirements. Royalty Obligations A substantial amount of the coal that the Company mines is produced from mineral reserves leased from third-party land owners. These leases convey mining rights to the Company in exchange for royalties to be paid to the land owner as either a fixed amount per ton or as a percentage of the sales price. Although coal leases have varying renewal terms and conditions, they generally last for the economic life of the reserves. Coal royalty expense was $14.2 million for the three months ended March 31, 2020 and $26.7 million for the three months ended March 31, 2019

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity Pursuant to the Company's certificate of incorporation, the Company is authorized to issue up to 140,000,000 shares of common stock $0.01 , par value per share and 10,000,000 shares of preferred stock $0.01 par value per share. Stock Repurchase Program On March 26, 2019, the Company's board of directors (the "Board") approved the Company's second stock repurchase program (the “Stock Repurchase Program”) that authorizes repurchases of up to an aggregate of $70.0 million of the Company's outstanding common stock. The Company fully exhausted its previous stock repurchase program of $40.0 million of its outstanding common stock. The Stock Repurchase Program does not require the Company to repurchase a specific number of shares or have an expiration date. The Stock Repurchase Program may be suspended or discontinued by the Board at any time without prior notice. Under the Stock Repurchase Program, the Company may repurchase shares of its common stock from time to time, in amounts, at prices and at such times as the Company deems appropriate, subject to market and industry conditions, share price, regulatory requirements as determined from time to time by the Company and other considerations. The Company’s repurchases may be executed using open market purchases or privately negotiated transactions in accordance with applicable securities laws and regulations, including Rule 10b-18 of the Exchange Act and repurchases may be executed pursuant to Rule 10b5-1 under the Exchange Act. Repurchases will be subject to limitations in the ABL Facility and the Indenture. The Company intends to fund repurchases under the Stock Repurchase Program from cash on hand and/or other sources of liquidity. As of March 31, 2020 , the Company has repurchased 500,000 shares for approximately $10.6 million , leaving approximately $58.8 million of share repurchases authorized under the Stock Repurchase Program. In light of the uncertainties resulting from the novel coronavirus disease 2019 ("COVID-19") and as a precautionary measure to preserve liquidity, the Company is temporarily suspending its share repurchase program. The Company will continue to monitor its liquidity in light of the COVID-19 pandemic and will consider when to reinstate the program. Regular Quarterly Dividend On February 14, 2020, the Board declared a regular quarterly cash dividend of $0.05 per share, totaling $2.6 million , which was paid on March 2, 2020, to stockholders of record as of the close of business on February 25, 2020.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company had no assets or any other liabilities measured at fair value on a recurring basis as of March 31, 2020 or December 31, 2019 . The following methods and assumptions were used to estimate the fair value for which the fair value option was not elected: Cash and cash equivalents, short-term investments, receivables and trade accounts payable— The carrying amounts reported in the Condensed Balance Sheets approximate fair value due to the short-term nature of these assets and liabilities. Debt— The Company's outstanding debt is carried at cost. As of March 31, 2020 , the Company had $70.0 million outstanding under the ABL Facility, with $46.1 million available, net of outstanding letters of credit of $8.9 million . There were no borrowings outstanding under the ABL Facility and there were $8.9 million of letters of credit issued and outstanding under the ABL Facility as of December 31, 2019 . As of March 31, 2020 , the estimated fair value of the Notes is approximately $291.1 million

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Segment Information	Segment Information The Company identifies a business as an operating segment if: (i) it engages in business activities from which it may earn revenues and incur expenses; (ii) its operating results are regularly reviewed by the Chief Operating Decision Maker (“CODM”), who is the Company’s Chief Executive Officer, to make decisions about resources to be allocated to the segment and assess its performance; and (iii) it has available discrete financial information. The Company has determined that its two underground mining operations are its operating segments. The CODM reviews financial information at the operating segment level to allocate resources and to assess the operating results and financial performance for each operating segment. Operating segments are aggregated into a reportable segment if the operating segments have similar quantitative economic characteristics and if the operating segments are similar in the following qualitative characteristics: (i) nature of products and services; (ii) nature of production processes; (iii) type or class of customer for their products and services; (iv) methods used to distribute the products or provide services; and (v) if applicable, the nature of the regulatory environment. The Company has determined that the two operating segments are similar in both quantitative and qualitative characteristics and thus the two operating segments have been aggregated into one reportable segment. The Company has determined that its natural gas and royalty businesses did not meet the criteria in ASC 280 to be considered as operating or reportable segments. Therefore, the Company has included their results in an “all other” category as a reconciling item to consolidated amounts. The Company does not allocate all of its assets, or its depreciation and depletion expense, selling, general and administrative expenses, transactions costs, interest expense, and income tax expense by segment. The following tables include reconciliations of segment information to consolidated amounts (in thousands): For the three months ended 2020 2019 Revenues Mining $ 221,338 $ 369,681 All other 5,382 8,609 Total revenues $ 226,720 $ 378,290 For the three months ended 2020 2019 Capital Expenditures Mining 21,837 $ 23,210 All other 938 1,185 Total capital expenditures 22,775 $ 24,395 The Company evaluates the performance of its segment based on Segment Adjusted EBITDA, which is defined as net income adjusted for other revenues, cost of other revenues, depreciation and depletion, selling, general and administrative, net interest expense, income tax expense, loss on early extinguishment of debt, other income and certain transactions or adjustments that the CODM does not consider for the purposes of making decisions to allocate resources among segments or assessing segment performance. Segment Adjusted EBITDA does not represent and should not be considered as an alternative to cost of sales under GAAP and may not be comparable to other similarly titled measures used by other companies. Below is a reconciliation of Segment Adjusted EBITDA to net income, which is its most directly comparable financial measure calculated and presented in accordance with GAAP (in thousands): For the three months ended 2020 2019 Segment Adjusted EBITDA $ 69,824 $ 187,053 Other revenues 5,382 8,609 Cost of other revenues (7,561 ) (7,745 ) Depreciation and depletion (28,692 ) (22,233 ) Selling, general and administrative (8,456 ) (8,905 ) Loss on early extinguishment of debt — (9,756 ) Other income 1,822 — Interest expense, net (7,533 ) (8,592 ) Income tax expense (3,241 ) (27,984 ) Net income $ 21,545 $ 110,447

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Regular Quarterly Dividend On April 24, 2020 , the Board declared a regular quarterly cash dividend of $0.05 per share, totaling approximately $2.6 million , which will be paid on May 11, 2020 to stockholders of record as of the close of business on May 5, 2020 .

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include short-term deposits and highly liquid investments that have original maturities of three months or less when purchased and are stated at cost, which approximates fair value.
Short-Term Investments	Short-Term Investments Instruments with maturities greater than three months, but less than twelve months, are included in short-term investments. The Company purchases United States Treasury ("Treasury") bills with maturities ranging from six to twelve months which are classified as held to maturity and are carried at amortized cost, which approximates fair value. The Company also purchases fixed income securities and certificates of deposits with varying maturities that are classified as available for sale and are carried at fair value. Securities classified as held to maturity are those securities that management has the intent and ability to hold to maturity.
Revenue Recognition	Revenue Recognition Revenue is recognized when performance obligations under the terms of a contract with the Company's customers are satisfied; for all contracts this occurs when control of the promised goods have been transferred to its customers. For coal shipments to domestic customers via rail, control is transferred when the railcar is loaded. For coal shipments to international customers via ocean vessel, control is transferred when the vessel is loaded at the Port of Mobile, Alabama. For natural gas
Trade Accounts Receivable and Allowance for Credit Losses	Trade Accounts Receivable and Allowance for Credit Losses Trade accounts receivable represent customer obligations that are derived from revenue recognized from contracts with customers. Credit is extended based on an evaluation of the individual customer's financial condition. The Company maintains trade credit insurance on the majority of its customers and the geographic regions of coal shipments to these customers. In some instances, the Company requires letters of credit, cash collateral or prepayments from its customers on or before shipment to mitigate the risk of loss. These efforts have consistently resulted in the Company recognizing no historical credit losses. The Company also has never had to have a claim against its trade credit insurance policy. In order to estimate the allowance for credit losses on trade accounts receivable, the Company utilizes an aging approach in which potential impairment is calculated based on how long a receivable has been outstanding (e.g., current, 1-31, 31-60, etc.). The Company calculates an expected credit loss rate based on the Company’s historical credit loss rate, the risk characteristics of our customers, and the current metallurgical coal and steel market environments. As of March 31, 2020, the estimated allowance for credit losses was immaterial and did not have a material impact on the Company's financial statements.
New Accounting Pronouncements	New Accounting Pronouncements The Company adopted Accounting Standards Update 2016-13, "Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments" as of January 1, 2020 using the modified retrospective approach. The ASU requires the use of an “expected loss” model for instruments measured at amortized cost, in which companies will be required to estimate the lifetime expected credit loss and record an allowance to offset the amortized cost basis, resulting in a net presentation of the amount expected to be collected on the financial asset. The adoption of the new standard did not have a material impact on the Company's financial statements, including accounting policies, processes and systems.

Inventories, net (Tables)

Inventories, net (Tables)	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Schedule of Inventories, Net	Inventories, net are summarized as follows (in thousands): March 31, 2020 December 31, 2019 Coal $ 87,684 $ 69,064 Raw materials, parts, supplies and other, net 29,879 28,837 Total inventories, net $ 117,563 $ 97,901

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Debt consisted of the following (in thousands): March 31, 2020 December 31, 2019 Weighted Average Interest Rate at March 31, 2020 Final Maturity Senior Secured Notes $ 343,435 $ 343,435 8% 2024 ABL Borrowings 70,000 — 3.75% 2023 Debt discount/premium, net (4,072 ) (4,246 ) Total debt 409,363 339,189 Less: current debt — — Total long-term debt $ 409,363 $ 339,189

Other Long-Term Liabilities (Ta

Other Long-Term Liabilities (Tables)	3 Months Ended
	Mar. 31, 2020
Other Liabilities Disclosure [Abstract]
Other Long-Term Liabilities	Other long-term liabilities are summarized as follows (in thousands): March 31, 2020 December 31, 2019 Black lung obligations $ 29,871 $ 30,233 Other 1,679 1,197 Total other long-term liabilities $ 31,550 $ 31,430

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Supplemental Balance Sheet Information	Supplemental balance sheet information related to leases was as follows (in thousands): March 31, 2020 December 31, 2019 Finance lease right-of-use assets, net (1) $ 39,516 $ 40,227 Finance lease liabilities Current 8,022 10,146 Noncurrent 26,106 25,528 Total finance lease liabilities $ 34,128 $ 35,674 Weighted average remaining lease term - finance leases (in months) 42.7 44.7 Weighted average discount rate - finance leases (2) 5.86 % 6.02 % (1) Finance lease right-of-use assets are recorded net of accumulated amortization of $7.8 million and $4.8 million and are included in property, plant and equipment, net in the Condensed Balance Sheet as of March 31, 2020 and the Balance Sheet as of December 31, 2019, respectively. (2) When an implicit discount rate is not readily available in a lease, the Company uses its incremental borrowing rate based on information available at the commencement date when determining the present value of lease payments.
Components of Lease Expense, Finance Leases	The components of lease expense were as follows (in thousands): For the three months ended 2020 2019 Operating lease cost (1): $ 292 $ 144 Finance lease cost: Amortization of leased assets 2,998 1,957 Interest on lease liabilities 546 13 Net lease cost $ 3,836 $ 2,114 (1) Includes leases that are for periods of 12 months or less.
Components of Lease Expense, Operating Leases	The components of lease expense were as follows (in thousands): For the three months ended 2020 2019 Operating lease cost (1): $ 292 $ 144 Finance lease cost: Amortization of leased assets 2,998 1,957 Interest on lease liabilities 546 13 Net lease cost $ 3,836 $ 2,114 (1) Includes leases that are for periods of 12 months or less.
Maturities of Lease Liabilities	Maturities of lease liabilities were as follows (in thousands): Finance Leases (1) 2020 $ 7,978 2021 13,089 2022 8,558 2023 8,558 2024 842 Thereafter — Total 39,025 Less: amount representing interest (4,897 ) Present value of lease liabilities $ 34,128 (1) Finance lease payments include $4.5 million of future payments required under signed lease agreements that have not yet commenced.
Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows (in thousands): For the three months ended 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from finance leases $ 546 $ 13 Financing cash flows from finance leases $ 3,833 $ 1,957 Non-cash right-of-use assets obtained in exchange for lease obligations: Finance leases $ 2,286 $ 2,086

Net Income per Share (Tables)

Net Income per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Basic and Diluted Net Income per Share	Basic and diluted net income per share was calculated as follows (in thousands, except per share data): For the three months ended 2020 2019 Numerator: Net income $ 21,545 $ 110,447 Denominator: Weighted-average shares used to compute net income per share—basic 51,106 51,511 Dilutive restrictive stock awards 167 119 Weighted-average shares used to compute net income per share—diluted 51,273 51,630 Net income per share—basic and diluted $ 0.42 $ 2.14 Net income per share—diluted $ 0.42 $ 2.14

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following tables include reconciliations of segment information to consolidated amounts (in thousands): For the three months ended 2020 2019 Revenues Mining $ 221,338 $ 369,681 All other 5,382 8,609 Total revenues $ 226,720 $ 378,290
Reconciliation of Capital Expenditures from Segments to Consolidated	For the three months ended 2020 2019 Capital Expenditures Mining 21,837 $ 23,210 All other 938 1,185 Total capital expenditures 22,775 $ 24,395
Reconciliation of Net Income (Loss) from Segments to Consolidated	Below is a reconciliation of Segment Adjusted EBITDA to net income, which is its most directly comparable financial measure calculated and presented in accordance with GAAP (in thousands): For the three months ended 2020 2019 Segment Adjusted EBITDA $ 69,824 $ 187,053 Other revenues 5,382 8,609 Cost of other revenues (7,561 ) (7,745 ) Depreciation and depletion (28,692 ) (22,233 ) Selling, general and administrative (8,456 ) (8,905 ) Loss on early extinguishment of debt — (9,756 ) Other income 1,822 — Interest expense, net (7,533 ) (8,592 ) Income tax expense (3,241 ) (27,984 ) Net income $ 21,545 $ 110,447

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Short-Term Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Short-term investments	$ 8,500	$ 14,675
Cash and Fixed Income Securities
Schedule of Held-to-maturity Securities [Line Items]
Short-term investments	$ 8,500	$ 14,700

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Thousands	3 Months Ended		14 Months Ended
	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Mar. 31, 2018t
Concentration Risk [Line Items]
Percent of total production transferred for title and marketing			10.00%
Maximum total production transferred for title and marketing | t			250,000
Other revenues	$ 226,720	$ 378,290
XCoal | Customer Concentration Risk | Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	19.90%	25.80%
Other revenues	$ 44,300	$ 94,900

Inventories, net (Details)

Inventories, net (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Coal	$ 87,684	$ 69,064
Raw materials, parts, supplies and other, net	29,879	28,837
Total inventories, net	$ 117,563	$ 97,901

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020	Mar. 27, 2020	Dec. 31, 2019
Tax Credit Carryforward [Line Items]
Income tax expense	$ 3,241	$ 27,984
Adjustment out of income tax receivable, non-current	0				$ (11,349)
Adjustment into income tax receivable, current	$ 24,274				$ 12,925
Restatement Adjustment
Tax Credit Carryforward [Line Items]
Adjustment out of income tax receivable, non-current				$ 11,300
Adjustment into income tax receivable, current				$ 11,300
Forecast
Tax Credit Carryforward [Line Items]
Expected refunds of AMT credits			$ 24,300

Debt - Schedule of Long-Term De

Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt discount/premium, net	$ (4,072)	$ (4,246)
Total debt	409,363	339,189
Less: current debt	0	0
Total long-term debt	409,363	339,189
Senior secured notes
Debt Instrument [Line Items]
Long-term debt, gross	$ 343,435	343,435
Weighted average interest rate	8.00%
Revolving credit facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 70,000	$ 0
Weighted average interest rate	3.75%

Debt - Narrative (Details)

Debt - Narrative (Details) - USD ($)	Mar. 24, 2020	May 14, 2019	Feb. 21, 2019	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Mar. 25, 2019	Mar. 22, 2019	Mar. 01, 2018	Nov. 02, 2017
Debt Instrument [Line Items]
Cash and cash equivalents				$ 256,743,000		$ 193,383,000
Amount that can be authorized without making an offer to buy back debt							$ 299,401,000
Special cash dividend		$ 230,000,000
Loss on early extinguishment of debt				0	$ 9,756,000
Borrowings under ABL Facility				70,000,000	$ 0
Senior secured notes | Senior Secured Notes Due 2024, New Notes
Debt Instrument [Line Items]
Face amount of debt									$ 125,000,000
Senior secured notes | Senior Secured Notes Due 2024, Existing Notes, Restricted Payment Offer
Debt Instrument [Line Items]
Maximum amount available for repurchase			$ 150,000,000
Stated interest rate									8.00%
Redemption price, percentage			103.00%
Debt instrument, amount validly tendered and not withdrawn								$ 1,900,000
Pro-ration factor								31.5789%
Purchase integrals								$ 1,000
Senior secured notes | Senior Secured Notes Due 2024, Tendered Notes, Restricted Payment Pro-Rated Offer
Debt Instrument [Line Items]
Debt instrument, amount validly tendered and not withdrawn								599,000
Debt instrument, amount accepted								599,000
Debt instrument, not accepted								1,301,000
Senior secured notes | Senior Secured Notes Due 2024, Existing Notes
Debt Instrument [Line Items]
Face amount of debt										$ 350,000,000
Stated interest rate										8.00%
Senior secured notes | Senior Secured Notes Due 2024, Existing Notes, Tender Offer
Debt Instrument [Line Items]
Maximum amount available for repurchase			$ 150,000,000
Redemption price, percentage			104.25%
Debt instrument, amount validly tendered and not withdrawn								$ 415,099,000
Pro-ration factor								31.5789%
Purchase integrals								$ 1,000
Senior secured notes | Senior Secured Notes Due 2024, Tendered Notes, Tender Offer Pro-Rated Offer
Debt Instrument [Line Items]
Debt instrument, amount validly tendered and not withdrawn								130,966,000
Debt instrument, amount accepted								130,966,000
Debt instrument, not accepted								$ 284,133,000
Citibank | Revolving credit facility
Debt Instrument [Line Items]
Borrowings under ABL Facility	$ 70,000,000			$ 70,000,000

Other Long-Term Liabilities (De

Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Black lung obligations	$ 29,871	$ 30,233
Other	1,679	1,197
Total other long-term liabilities	$ 31,550	$ 31,430

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Lessor, Lease, Description [Line Items]
Finance leases that have not yet commenced	$ 4.5
Minimum
Lessor, Lease, Description [Line Items]
Remaining lease terms		1 year
Finance leases not yet commenced, term		1 year
Maximum
Lessor, Lease, Description [Line Items]
Remaining lease terms	5 years
Finance leases not yet commenced, term	2 years

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Finance lease right-of-use assets, net(1)	$ 39,516	$ 40,227
Finance lease liabilities
Current	8,022	10,146
Noncurrent	26,106	25,528
Total finance lease liabilities	$ 34,128	$ 35,674
Weighted average remaining lease term - finance leases (in months)	3 years 6 months 21 days	3 years 8 months 21 days
Weighted average discount rate - finance leases(2)	5.86%	6.02%
Accumulated amortization	$ 7,800	$ 4,800

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 292	$ 144
Finance lease cost:
Amortization of leased assets	2,998	1,957
Interest on lease liabilities	546	13
Net lease cost	$ 3,836	$ 2,114

Leases - Maturities of Lease Li

Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2020USD ($)
Leases [Abstract]
2020	$ 7,978
2021	13,089
2022	8,558
2023	8,558
2024	842
Thereafter	0
Total	39,025
Less: amount representing interest	(4,897)
Present value of lease liabilities	34,128
Future payments required under signed lease agreements that have not yet commenced	$ 4,500

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$ 546	$ 13
Financing cash flows from finance leases	3,833	1,957
Non-cash right-of-use assets obtained in exchange for lease obligations:
Non-cash right-of-use assets obtained in exchange for finance lease obligations	$ 2,286	$ 2,086

Net Income per Share - Schedule

Net Income per Share - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income	$ 21,545	$ 110,447
Denominator:
Weighted average number of shares outstanding—basic (in shares)	51,106	51,511
Dilutive restrictive stock awards	167	119
Weighted average number of shares outstanding—diluted (in shares)	51,273	51,630
Net income per share—basic and diluted (in dollars per share)	$ 0.42	$ 2.14
Net income per share—diluted (in dollars per share)	$ 0.42	$ 2.14

Net Income per Share - Narrativ

Net Income per Share - Narrative (Details) - USD ($) $ in Millions	Feb. 13, 2020	Mar. 31, 2020	Mar. 31, 2019
Class of Stock [Line Items]
Dilutive awards (in shares)		167,000	119,000
2016 Equity Plan
Class of Stock [Line Items]
Dilutive awards (in shares)		55,329
Phantom Share Units (PSUs) | 2016 and 2017 Equity Plans
Class of Stock [Line Items]
Settlement period		5 years
Phantom Share Units (PSUs) | 2016 Equity Plan
Class of Stock [Line Items]
Common stock shares contingently issuable (in shares)		43,580
Restricted Stock Units (RSUs) | 2017 Equity Plan
Class of Stock [Line Items]
Common stock shares contingently issuable (in shares)		13,157
Restricted Stock Units (RSUs) | 2017 Equity Plan, 2019 Award
Class of Stock [Line Items]
Restricted stock unit awards awarded (in shares)	420,303
Stock compensation expense		$ 0.5
Restricted Stock Units (RSUs) | 2017 Equity Plan, Additional 2019 Award
Class of Stock [Line Items]
Shares to be issued upon settlement of awards (in shares)		141,243
Dilutive awards (in shares)		87,879
Service-based RSUs | 2016 Equity Plan
Class of Stock [Line Items]
RSUs excluded from computation of earnings per share (in shares)		73,429
Service-based RSUs | 2017 Equity Plan
Class of Stock [Line Items]
RSUs excluded from computation of earnings per share (in shares)		248,294
Dilutive awards (in shares)		23,295
Service-based RSUs | 2017 Equity Plan, 2019 Award
Class of Stock [Line Items]
Vesting period		3 years
Performance and market-based RSUs | 2017 Equity Plan
Class of Stock [Line Items]
RSUs excluded from computation of earnings per share (in shares)		454,130
Performance and market-based RSUs | 2017 Equity Plan, 2019 Award
Class of Stock [Line Items]
Vesting period		3 years

Related Party Transactions - Na

Related Party Transactions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Nov. 05, 2015
Black Warrior Methane (BWM)
Related Party Transaction [Line Items]
Proportionate consolidation method, ownership percentage			50.00%
Black Warrior Transmission (BWT)
Related Party Transaction [Line Items]
Equity method investment, ownership percentage			50.00%
Allocated Expenses to Joint Venture | Corporate Joint Venture
Related Party Transaction [Line Items]
Expenses from transactions with related party	$ 0.5	$ 0.1

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Settlement proceeds	$ 1,800,000			$ 22,800,000
Throughput obligation	$ 0	$ 0		$ 0
Coal royalty expense		$ 14,200,000	$ 26,700,000

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($)	Feb. 19, 2019	Sep. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 26, 2019	Mar. 25, 2019	May 02, 2018	Apr. 12, 2017
Class of Stock [Line Items]
Common stock shares authorized (in shares)			140,000,000	140,000,000				140,000,000
Common stock par value (in dollars per share)			$ 0.01	$ 0.01				$ 0.01
Preferred stock shares authorized (in shares)			10,000,000	10,000,000				10,000,000
Preferred stock par value (in dollars per share)			$ 0.01	$ 0.01				$ 0.01
Remaining authorized repurchase amount						$ 299,401,000
Dividends declared (in dollars per share)	$ 0.05
Regular quarterly cash dividend	$ 2,600,000
New Stock Repurchase Program
Class of Stock [Line Items]
Authorized amount of stock to be repurchased, value					$ 70,000,000
Shares repurchased (in shares)		500,000
Treasury stock purchase, value		$ 10,600,000
Remaining authorized repurchase amount			$ 58,800,000
The First Stock Repurchase Program
Class of Stock [Line Items]
Authorized amount of stock to be repurchased, value							$ 40,000,000

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Details) - USD ($)	Mar. 24, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Borrowings under ABL Facility		$ 70,000,000	$ 0
Long-term debt		409,363,000		$ 339,189,000
Letters of credit outstanding		8,900,000		0
ABL Facility | Revolving credit facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of borrowings available		46,100,000
Senior Secured Notes Due 2024, Existing Notes | Senior secured notes | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt instrument		291,100,000
Revolving credit facility | Citibank
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Borrowings under ABL Facility	$ 70,000,000	$ 70,000,000
Revolving credit facility | Citibank | Letter of Credit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Letters of credit issued and outstanding				$ 8,900,000

Segment Information - Narrative

Segment Information - Narrative (Details)	3 Months Ended
	Mar. 31, 2020segment
Segment Reporting [Abstract]
Number of operating segments	2
Number of reportable segments	1

Segment Information - Reconcili

Segment Information - Reconciliation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Total revenues	$ 226,720	$ 378,290
Mining | Mining | Operating Segments
Segment Reporting Information [Line Items]
Total revenues	221,338	369,681
All other
Segment Reporting Information [Line Items]
Total revenues	5,382	$ 8,609
All other | Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ 5,382

Segment Information - Reconci_2

Segment Information - Reconciliation of Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Capital Expenditures	$ 22,775	$ 24,395
Segment Reconciling Items
Segment Reporting Information [Line Items]
Capital Expenditures	938	1,185
Mining | Operating Segments
Segment Reporting Information [Line Items]
Capital Expenditures	$ 21,837	$ 23,210

Segment Information - Reconci_3

Segment Information - Reconciliation of Net Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue from External Customer [Line Items]
Segment Adjusted EBITDA	$ 69,824	$ 187,053
Other revenues	226,720	378,290
Cost of other revenues	(7,561)	(7,745)
Depreciation and depletion	(28,692)	(22,233)
Selling, general and administrative	(8,456)	(8,905)
Loss on early extinguishment of debt	0	(9,756)
Other income	1,822	0
Interest expense, net	(7,533)	(8,592)
Income tax expense	(3,241)	(27,984)
Net income	21,545	110,447
Other revenues
Revenue from External Customer [Line Items]
Other revenues	$ 5,382	$ 8,609

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 24, 2020	Feb. 19, 2019
Subsequent Event [Line Items]
Dividends declared (in dollars per share)		$ 0.05
Regular quarterly cash dividend		$ 2.6
Subsequent Event
Subsequent Event [Line Items]
Dividends declared (in dollars per share)	$ 0.05
Regular quarterly cash dividend	$ 2.6