Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net income (loss)	$ (74,623)	$ 135,581
Adjustments to reconcile to cash from operating activities:
Depreciation, depletion and amortization	61,475	51,873
Accretion on asset retirement obligations	9,992	10,274
Deferred income taxes	13,880	13,385
Employee stock-based compensation expense	8,936	11,473
Gains on disposals and divestitures, net	(3,180)	(1,415)
Amortization relating to financing activities	1,946	1,826
Gain on property insurance recovery related to Mountain Laurel longwall	(23,518)
Changes in:
Receivables	55,817	17,871
Inventories	(23,792)	(47,370)
Accounts payable, accrued expenses and other current liabilities	(42,889)	4,497
Income taxes, net	22,918	24,575
Other	18,960	3,336
Cash provided by operating activities	25,922	225,906
Investing activities
Capital expenditures	(148,561)	(87,854)
Minimum royalty payments	(1,124)	(1,125)
Proceeds from disposals and divestitures	562	1,591
Purchases of short term investments	(17,707)	(89,454)
Proceeds from sales of short term investments	86,079	90,424
Investments in and advances to affiliates, net	(1,059)	(3,275)
Proceeds from property insurance recovery related to Mountain Laurel longwall	23,518
Cash used in investing activities	(58,292)	(89,693)
Financing activities
Payments on term loan due 2024	(1,500)	(1,500)
Proceeds from equipment financing	53,611
Net payments on other debt	(13,592)	(8,845)
Debt financing costs	(1,171)
Dividends paid	(7,645)	(15,264)
Purchases of treasury stock		(143,142)
Payments for taxes related to net share settlement of equity awards	(331)
Other		30
Cash provided by (used in) financing activities	29,372	(168,721)
Decrease in cash and cash equivalents, including restricted cash	(2,998)	(32,508)
Cash and cash equivalents, including restricted cash, beginning of period	153,020	264,937
Cash and cash equivalents, including restricted cash, end of period	150,022	232,429
Cash and cash equivalents, including restricted cash, end of period
Cash and cash equivalents, including restricted cash	$ 150,022	$ 232,429

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The cash outflow for loan and debt issuance costs.

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Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings.

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Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.

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Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash outflow from the purchase of royalty interests in mining properties is the amount of cash the mineral producer pays the owner of the mine or mineral resource.

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Amount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities.

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Amount of cash inflow (outflow) from financing activities classified as other.

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Amount of noncash expense for share-based payment arrangement.

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