Condensed Consolidated and Combined Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	1 Months Ended		2 Months Ended	3 Months Ended				8 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Aug. 21, 2020	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Mar. 31, 2020	Aug. 21, 2020	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)		$ (11,516)	$ (56)	$ 8,047	$ 4,744	$ (56)	$ (80,831)	$ (85,034)	$ 18,534
Adjustments to reconcile net income (loss) to net cash provided by (used in) operations:
Exploration and abandonment expense		14						4	698
Depletion, depreciation and amortization expense		2,327	1,294	13,917				6,385	43,737
Accretion expense		15						89	116
Stock-based compensation expense		14,508						0	2,894
Amortization of debt issuance costs		0						0	259
Derivative-related activity		0	0	6,844				0	19,402
Loss on terminated acquisition		0						76,500	0
Deferred income taxes		(3)						0	4,680
Changes in operating assets and liabilities:
Accounts receivable		(3,404)						844	(16,168)
Prepaid expenses, inventory and other assets		(357)						(196)	(7,816)
Accounts payable, accrued liabilities and other current liabilities		9,109						(2,694)	21,401
Net cash provided by (used in) operating activities		10,693						(4,102)	87,737
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to crude oil and natural gas properties		(17,908)						(49,364)	(154,599)
Changes in working capital associated with crude oil and natural gas property additions		(23,421)						7,348	15,995
Acquisitions of crude oil and natural gas properties		(704)						(3,338)	(53,276)
Proceeds from sales of properties		0						0	3,234
Other property additions		0						(50)	(453)
Issuance of notes receivable		0						(7,482)	0
Extension payment on acquisition		0						(15,000)	0
Net cash used in investing activities		(42,033)						(67,886)	(189,099)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under revolving credit facility		0						0	95,000
Proceeds from exercises of warrants	$ 3,600	0						0	5,466
Proceeds from subscription receivable from exercises of warrants		0						0	3,596
Proceeds from exercises of stock options		0						0	1,574
Debt issuance costs		0						0	(1,757)
Dividends paid		0						0	(9,274)
Dividend equivalents paid		0						0	(829)
Proceeds from stock offering		92,554						0	0
Stock offering costs		(8,383)						0	0
Cash acquired from non-successors in HighPeak business combination		100						0	0
Contributions from partners		0						54,000	0
Distributions to partners		0						(2,780)	0
Net cash provided by financing activities		84,271						51,220	93,776
Net (decrease) increase in cash and cash equivalents		52,931						(20,768)	(7,586)
Cash and cash equivalents, beginning of period		1,943			$ 19,552		$ 22,711	22,711	19,552	$ 22,711
Cash and cash equivalents, end of period	$ 19,552	54,874	$ 1,943	$ 11,966		$ 54,874		1,943	11,966	$ 54,874
Supplemental disclosure of non-cash transactions:
Interest paid		0						0	752
Income taxes paid		0						0	0
Additions to asset retirement obligations		$ 15						$ 97	$ 1,841