Condensed Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Capital in Excess of Par Value	Retained Earnings (Deficit)	Non-controlling Interest in Consolidated Subsidiaries
Stockholders' equity, beginning balance at Dec. 31, 2021	$ 399,668	$ 120	$ (51,965)	$ 198,171	$ 41,071	$ 212,271
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(52,705)				(46,877)	(5,828)
Distributions to non-controlling interests	(9,479)					(9,479)
Deconsolidation of Superior	(196,964)					(196,964)
Stock-based compensation	1,038			1,038
Stockholders' equity, ending balance at Mar. 31, 2022	141,558	120	(51,965)	199,209	(5,806)	$ 0
Stockholders' equity, beginning balance at Dec. 31, 2022	362,626	121	(79,399)	252,464	189,440
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	134,650				134,650
Dividends declared (Note 5)	(98,093)				(98,093)
Stock-based compensation	1,408			1,408
Exercise of stock options, net of shares withheld for taxes and exercise price	(108)			(108)
Exercise of warrants, net of shares withheld for exercise price	192			192
Stockholders' equity, ending balance at Mar. 31, 2023	$ 400,675	$ 121	$ (79,399)	$ 253,956	$ 225,997