Income Taxes - Components of Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current tax provision	$ 20,418	$ 30,459	$ 10,565
Deferred tax expense (benefit)	2,854	(13,571)	16,904
Total provision for income taxes	$ 23,272	$ 16,888	$ 27,469