Condensed Consolidated Statement of Changes in Stockholders' Equity (Successor) (Unaudited) - USD ($) $ in Thousands	Outside Directors [Member] Common Stock [Member]	Outside Directors [Member] Additional Paid-in Capital [Member]	Outside Directors [Member] Retained Earnings [Member]	Outside Directors [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Aug. 21, 2020					0
Balance at Aug. 21, 2020					$ 0	$ 0	$ 0	$ 0
Compensation costs included in net income					0	14,508	0	14,508
Net income (loss)					$ 0	0	(11,516)	(11,516)
HighPeak business combination with HPK LP (in shares)					81,383,000
HighPeak business combination with HPK LP					$ 8	521,674		430,902
HighPeak business combination with HPK LP							(90,780)
Conversion of Pure Common Stock (in shares)					1,232,000
Conversion of Pure Common Stock					$ 0	12,324	0	12,324
Forward Purchases (in shares)					8,977,000
Forward Purchases					$ 1	89,768	0	89,769
Offering costs (including costs incurred at Pure prior to HighPeak business combination)					0	(22,035)	0	(22,035)
Deferred income tax liability at HighPeak business combination					$ 0	(40,500)	0	(40,500)
Balance (in shares) at Sep. 30, 2020					91,592,000
Balance at Sep. 30, 2020					$ 9	575,739	(102,296)	473,452
Balance (in shares) at Dec. 31, 2020					91,968,000
Balance at Dec. 31, 2020					$ 9	581,426	(107,209)	474,226
Exercise of warrants (in shares)					554,000
Exercise of warrants					$ 0	5,466	0	5,466
Shares issued upon options being exercised (in shares)					154,000
Shares issued upon options being exercised					$ 0	1,574	0	1,574
Compensation costs included in net income					0	966	0	966
Net income (loss)					$ 0	0	4,744	4,744
Balance (in shares) at Mar. 31, 2021					92,676,000
Balance at Mar. 31, 2021					$ 9	589,432	(102,465)	486,976
Balance (in shares) at Dec. 31, 2020					91,968,000
Balance at Dec. 31, 2020					$ 9	581,426	(107,209)	$ 474,226
Shares issued upon options being exercised (in shares)								154,268
Net income (loss)								$ 18,534
Balance (in shares) at Sep. 30, 2021					92,744,000
Balance at Sep. 30, 2021					$ 9	591,360	(101,461)	489,908
Balance (in shares) at Mar. 31, 2021					92,676,000
Balance at Mar. 31, 2021					$ 9	589,432	(102,465)	486,976
Compensation costs included in net income					0	1,023	0	1,023
Net income (loss)					$ 0	0	5,743	5,743
Restricted shares issued to outside directors (in shares)	53,000
Restricted shares issued to outside directors	$ 0	$ 0	$ 0	$ 0
Balance (in shares) at Jun. 30, 2021					92,729,000
Balance at Jun. 30, 2021					$ 9	590,455	(96,722)	493,742
Compensation costs included in net income					0	905	0	905
Net income (loss)					$ 0	0	8,047	8,047
Restricted shares issued to outside directors (in shares)					15,000
Restricted shares issued to outside directors					$ 0	0	0	0
Dividends declared					0	0	(11,593)	(11,593)
Dividend equivalents declared on outstanding stock options					$ 0	0	(1,193)	(1,193)
Balance (in shares) at Sep. 30, 2021					92,744,000
Balance at Sep. 30, 2021					$ 9	$ 591,360	$ (101,461)	$ 489,908