Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Operating activities
Net income (loss)	$ 110,967	$ (266,090)
Adjustments to reconcile to cash from operating activities:
Depreciation, depletion and amortization	84,441	94,105
Accretion on asset retirement obligations	16,311	14,939
Deferred income taxes	11	14,227
Employee stock-based compensation expense	12,841	13,907
Amortization relating to financing activities	4,801	3,189
Gain on property insurance recovery related to Mountain Laurel longwall		(23,518)
Gain on disposals and divestitures, net	(857)	(3,460)
Reclamation work completed	(36,200)	(10,423)
Non-cash asset impairment and restructuring		163,088
Changes in:
Receivables	(115,858)	47,416
Inventories	(29,862)	(12,499)
Accounts payable, accrued expenses and other current liabilities	12,827	(50,474)
Income taxes, net	1,247	22,855
Other	30,913	48,652
Cash provided by operating activities	91,582	55,914
Investing activities
Capital expenditures	(212,046)	(205,661)
Minimum royalty payments	(1,186)	(1,186)
Proceeds from disposals and divestitures	1,135	856
Purchases of short-term investments		(76,593)
Proceeds from sales of short-term investments	81,986	148,670
Investments in and advances to affiliates, net	(2,723)	(1,549)
Proceeds from property insurance recovery related to Mountain Laurel longwall		23,518
Cash used in investing activities	(132,834)	(111,945)
Financing activities
Payments on term loan	(2,250)	(2,250)
Proceeds from equipment financing	19,438	53,611
Proceeds from tax exempt bonds	44,985	53,090
Net payments on other debt	(20,208)	(19,347)
Debt financing costs	(2,057)	(3,528)
Dividends paid		(7,645)
Payments for taxes related to net share settlement of equity awards	(1,293)	(346)
Cash provided by financing activities	38,615	73,585
(Decrease) increase in cash and cash equivalents, including restricted cash	(2,637)	17,554
Cash and cash equivalents, including restricted cash, beginning of period	193,445	153,020
Cash and cash equivalents, including restricted cash, end of period	190,808	170,574
SUPPLEMENTAL CASH FLOW INFORMATION
Cash and cash equivalents	189,707	156,655
Restricted Cash	1,101	13,919
Cash and cash equivalents, including restricted cash	$ 190,808	$ 170,574

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