UNAUDITED CONDENSED STATEMENTS OF CONSOLIDATED CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss	$ (367,199)	$ (31,477)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	15,556	11,166
Impairment expense	455,031	0
(Gain) loss on derivative instruments	(104,096)	32,393
Cash settlements (paid) received on expired derivative instruments	12,522	(1,277)
Bad debt expense	110	101
Amortization and write-off of deferred financing costs	309	308
Accretion of asset retirement obligations	1,513	1,311
Share-based compensation (see Note 11)	(1,112)	1,443
Settlement of asset retirement obligations	0	(162)
Changes in operating assets and liabilities:
Accounts receivable	8,381	4,326
Prepaid expenses and other assets	(349)	(6,856)
Payables and accrued liabilities	(7,399)	(537)
Other	(178)	61
Net cash provided by operating activities	13,089	10,800
Cash flows from investing activities:
Additions to oil and gas properties	(12,416)	(10,370)
Additions to other property and equipment	(304)	(62)
Additions to restricted investments	0	(68)
Net cash used in investing activities	(12,720)	(10,500)
Cash flows from financing activities:
Advances on revolving credit facilities	25,000	0
Payments on revolving credit facilities	(20,000)	(24,000)
Deferred financing costs	0	(101)
Dividends to stockholders	(3,786)	0
Common stock repurchased and retired under the share repurchase program	0	(920)
Costs incurred in conjunction with tender offer	0	(107)
Restricted units returned to plan	(14)	0
Net cash provided by (used in) financing activities	1,200	(25,128)
Net change in cash, cash equivalents and restricted cash	1,569	(24,828)
Cash, cash equivalents and restricted cash, beginning of period	325	50,029
Cash, cash equivalents and restricted cash, end of period	$ 1,894	$ 25,201