Income Tax - Components of Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Current tax provision	$ 2,689	$ 4,654	$ 8,287	$ 10,252
Deferred tax benefit	(57)	(134)	(947)	(1,214)
Income tax expense	$ 2,632	$ 4,520	$ 7,340	$ 9,038