CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - unaudited - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income (loss)	$ 163,094	$ (38,697)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	40,718	38,870
Derivative contracts:
Net (gains) losses	(151,119)	68,017
Cash settlements, net	(269)	4,394
Deferred income tax expense	2,320	1,212
Gain on sales of assets, net	(6)	(25)
Non-cash interest expense	823	921
Share-based compensation	856	1,038
Other, net	8	13
Changes in operating assets and liabilities, net	16,048	(6,484)
Net Cash Provided by (Used in) Operating Activities	72,473	69,259
Cash flows from investing activities
Capital expenditures	(62,015)	(86,486)
Proceeds from sales of assets, net	75	18
Net cash used in investing activities	(61,940)	(86,468)
Cash flows from financing activities
Proceeds from credit facility borrowings	46,000	12,000
Repayment of credit facility borrowings	(9,000)	(8,000)
Net cash provided by financing activities	37,000	4,000
Net increase (decrease) in cash and cash equivalents	47,533	(13,209)
Cash and cash equivalents – beginning of period	7,798	17,864
Cash and cash equivalents – end of period	55,331	4,655
Cash paid for:
Interest, net of amounts capitalized	7,442	8,413
Reorganization items, net	0	79
Non-cash investing and financing activities:
Changes in accrued liabilities related to capital expenditures	$ 18,660	$ 13,569