CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (32,070)	$ (464,030)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	28,068	40,268
Impairment expense	0	476,936
Loss (gain) on derivative instruments	142,223	(56,628)
Cash settlements (paid) received on expired derivative instruments	(90,214)	61,135
Cash settlements received on terminated derivative instruments	0	17,977
Bad debt expense	95	294
Amortization and write-off of deferred financing costs	626	3,272
Gain on extinguishment of debt	(5,516)	0
Accretion of asset retirement obligations	6,611	6,206
Share-based compensation (see Note 11)	1,047	(112)
Settlement of asset retirement obligations	(296)	(327)
Changes in operating assets and liabilities:
Accounts receivable	(61,172)	1,950
Prepaid expenses and other assets	296	(2,334)
Payables and accrued liabilities	73,655	(9,803)
Other	(384)	(474)
Net cash provided by operating activities	62,969	74,330
Cash flows from investing activities:
Additions to oil and gas properties	(29,294)	(34,833)
Additions to other property and equipment	(539)	(1,057)
Additions to restricted investments	1	0
Other	404	0
Net cash used in investing activities	(29,428)	(35,890)
Cash flows from financing activities:
Advances on revolving credit facility	0	25,000
Payments on revolving credit facility	(25,000)	(55,000)
Proceeds from the paycheck protection program	0	5,516
Deferred financing costs	(25)	(115)
Dividends to stockholders	0	(3,786)
Shares withheld for taxes	(81)	(51)
Other	0	35
Net cash used in financing activities	(25,106)	(28,401)
Net change in cash and cash equivalents	8,435	10,039
Cash and cash equivalents, beginning of period	10,364	325
Cash and cash equivalents, end of period	$ 18,799	$ 10,364