Income Taxes - Constituents of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 160	$ 15,854	$ 10,624
State	921	2,108	(879)
Foreign	13,197	30,670	6,307
Current income tax expense (benefit), Total	14,278	48,632	16,052
Deferred:
Federal	(18,266)	352,808	(1,271)
State	(556)	183	554
Foreign	15,269	(442,494)	(28)
Deferred income tax expense (benefit), Total	(3,553)	(89,503)	(745)
Income tax expense (benefit), continuing operations, Total	$ 10,725	$ (40,871)	$ 15,307