Income Taxes - Schedule of Components of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal	$ 22,942	$ 21,330	$ 29,071
State	282	298	274
Total current tax provision	23,224	21,628	29,345
Deferred State and Local Income Tax Expense (Benefit)	2,284	3,666	19,237
Deferred State and Local Income Tax Expense (Benefit)	8	(20)	(21)
Deferred Income Tax Expense (Benefit)	2,292	3,646	19,216
Total tax provision (benefit), Amount	$ 25,516	$ 25,274	$ 48,561