Industry Segments - Corporate Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
General and administrative expense	$ 20,012	$ 20,348
Depreciation, amortization, and accretion	8,951	9,552
Interest expense, net	4,404	5,292
Warrants fair value adjustment	323	(337)
Other (income) expense, net	(5,095)	22
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	11,943	(2,992)
Corporate Overhead [Member]
Segment Reporting Information [Line Items]
General and administrative expense	13,020	8,081
Depreciation, amortization, and accretion	169	197
Interest expense, net	5,064	5,455
Warrants fair value adjustment	323	(338)
Other (income) expense, net	(3,268)	49
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 15,308	$ 13,444