Income Tax - Income Tax Provision (Benefit) on Income From Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal	$ 12,814	$ 9,110	$ 22,883
State	6,585	4,367	4,666
Current income tax expense benefit	19,399	13,477	27,549
Deferred	(6,088)	(5,069)	(33,664)
Income tax expense benefit	$ 13,311	$ 8,408	$ (6,115)