Income Taxes - Components of the Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (141,997)	$ (22,429)	$ (2,178)
State and local	(1,847)	1,218	410
Foreign	(1,554)	6,693	4,692
Total current expense (benefit)	(145,398)	(14,518)	2,924
Deferred:
Federal	(33,494)	106,703	42,246
State and local	(12,592)	8,986	4,057
Total deferred expense (benefit)	(46,086)	115,689	46,303
Total income tax expense (benefit)	$ (191,484)	$ 101,171	$ 49,227