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Segments - Reconciliation of Net Income to Gross Margin (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Reconciliation Net Income (Loss) to Gross Margin
Total gross margin	$ 108,283	$ 136,055
Less:
Selling, general and administrative	25,084	30,626
Depreciation and amortization	45,712	49,822
Long-lived and other asset impairment	7,073	6,195
Goodwill impairment		99,830
Restructuring charges	897	1,728
Interest expense	31,245	29,665
Gain on sale of assets, net	(11,032)	(4,116)
Other income, net	(1,889)	(555)
Income (loss) before income taxes	$ 11,193	$ (77,140)

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