Income Taxes - Schedule of Income Tax Expense and Effective Tax Rate (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 3,022	$ 2,930	$ 4,424	$ 10,350
Effective tax rate	(59.00%)	(53.00%)	(149.00%)	(441.00%)