Business Segment Information - Reconciliation of Operating Profit (Loss) from Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Depreciation and amortization									$ (52,537)	$ (114,657)
Gain (loss) on disposal of assets									3,503	(4,013)
Acquisition related costs									(21,635)	0
Gain on derivative									4,866	0
Loss from continuing operations before income taxes									(253,040)	(91,380)
Continuing Operations
Segment Reporting Information [Line Items]
Segment profits	$ 16,581	$ 12,138	$ 18,361	$ 26,228	$ 25,271	$ 39,448	$ 38,915	$ 42,067	73,308	145,701
General and administrative expenses									(98,048)	(115,464)
Depreciation and amortization									(52,537)	(69,489)
Gain (loss) on disposal of assets									6,138	(2,135)
Impairment and other charges									(118,152)	(8,262)
Acquisition related costs									(21,635)	0
Interest expense, net									(46,980)	(42,378)
Gain on derivative									4,866	0
Other income									$ 0	$ 647