Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Revision of Prior Period, Error Correction, Adjustment	Common Stock	Treasury Stock	Capital In Excess of Par Value	Retained Earnings (Deficit)	Retained Earnings (Deficit) Revision of Prior Period, Error Correction, Adjustment	Non-controlling Interest in Consolidated Subsidiaries	Non-controlling Interest in Consolidated Subsidiaries Revision of Prior Period, Error Correction, Adjustment
Beginning balance at Dec. 31, 2019	$ 1,055,635		$ 10,591	$ 0	$ 644,152	$ 199,135		$ 201,757
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(890,624)					(931,012)		40,388
Activity in stock-based compensation plans	6,169		113		6,001			55
Ending balance at Aug. 31, 2020	171,180		10,704	0	650,153	(731,877)		242,200
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Successor equity	197,323		120		197,203
Ending balance at Sep. 01, 2020	439,523		120	0	197,203	0		242,200
Beginning balance at Aug. 31, 2020	171,180		10,704	0	650,153	(731,877)		242,200
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(13,988)					(18,140)		4,152
Activity in stock-based compensation plans	58				39			19
Ending balance at Dec. 31, 2020	425,593		120	0	197,242	(18,140)		246,371
Ending balance (Error in the Allocation of Earnings from Superior between Unit Corp and Noncontrolling Interests) at Dec. 31, 2020		$ 0					$ (1,436)		$ 1,436
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48,216					60,647		(12,431)
Activity in stock-based compensation plans	960				929			31
Distributions to non-controlling interests	(23,136)							(23,136)
Repurchases of common stock	(51,965)			(51,965)
Ending balance at Dec. 31, 2021	$ 399,668		$ 120	$ (51,965)	$ 198,171	$ 41,071		$ 212,271