Segments - Reconciliation of Net Income to Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reconciliation Net Income (Loss) to Gross Margin
Total gross margin	$ 136,055	$ 117,522
Less:
Selling, general and administrative	30,626	28,989
Depreciation and amortization	49,822	44,106
Long-lived asset impairment	6,195	3,092
Goodwill impairment	99,830
Restatement and other charges		421
Restructuring costs	1,728
Interest expense	29,665	23,617
Transaction-related costs		180
(Gain) loss on sale of assets, net	(4,116)	16
Other income, net	(555)	(221)
Income (loss) before income taxes	$ (77,140)	$ 17,322