Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net loss	$ (7,549)	$ (11,053)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation, depletion and amortization	77,493	76,096
Impairment of proved and unproved oil and gas properties	0	44,928
Impairment of goodwill	0	17,620
Accretion of asset retirement obligations	916	137
Settlement of asset retirement obligations	(103)	0
(Gain) on sale of oil and gas properties	(740)	(198)
(Gain) on sale of office and other equipment	(114)	0
Total loss (gain) on derivative contracts, net	117,566	(73,065)
Operating portion of net cash (paid) received in settlement of derivative contracts	(46,311)	47,599
Stock-based compensation	10,621	7,665
Deferred income taxes	(343)	112
Amortization of deferred financing costs	581	241
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(12,238)	12,102
(Increase) decrease in prepaid expenses and other current assets	900	(264)
Increase (decrease) in accounts payable and accrued expenses	6,090	1,976
Increase (decrease) in revenues and royalties payable	2,556	(7,768)
Increase (decrease) in advances	(2,015)	(11,412)
Net cash provided by operating activities	147,310	104,716
Cash flows from investing activities:
Acquisition of oil and gas properties, net of cash acquired	(240,431)	0
Additions to oil and gas properties	(65,074)	(72,869)
Additions to office and other equipment	(886)	(111)
Proceeds from sales of oil and gas properties	975	409
Net cash used in investing activities	(305,416)	(72,571)
Cash flows from financing activities:
Proceeds from borrowings	503,734	93,923
Repayments of borrowings	(340,482)	(133,923)
Cash paid related to the exchange and cancellation of Class A Common Stock	(3,420)	(531)
Cash paid for finance leases	(70)	(125)
Deferred financing costs	(2,709)	0
Net cash provided by (used in) financing activities	157,053	(40,656)
Net decrease in cash	(1,053)	(8,511)
Cash at beginning of period	1,494	13,822
Cash at end of period	441	5,311
Cash paid for:
Interest	7,126	3,613
Income taxes	687	0
Non-cash investing and financing activities:
Accrued capital expenditures	18,971	2,213
Asset retirement obligations	242	44
IRM Acquisition
Non-cash investing and financing activities:
Class A Common Stock issued in IRM Acquisition	76,572	0
Tracker/Sequel Acquisition
Non-cash investing and financing activities:
Class A Common Stock issued in IRM Acquisition	$ 61,814	$ 0