Income Taxes - Summary of (Benefit) Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal, Current	$ (14)	$ (637)	$ (19,856)
Current State and Local Tax Expense (Benefit)	868	198	51
Foreign, Current	1,796	1,749	1,674
Current, Total	2,650	1,310	(18,131)
Federal, Deferred	170,508	(483,681)	(309,423)
State, Deferred	3,682	(14,973)	(1,431)
Deferred, Total	174,190	(498,654)	(310,854)
Income tax benefit (provision), total	$ 176,840	$ (497,344)	$ (328,985)