Income Taxes - Schedule of Provision for Income Taxes from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
State and local	$ 754	$ 524	$ 1,870
Total current provision	754	524	1,870
Federal	19,230	16,144	67,936
State and local	2,444	1,893	(2,681)
Total deferred provision	21,674	18,037	65,255
Total provision for income taxes	$ 22,428	$ 18,561	$ 67,125