Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Contingency [Line Items]
Valuation allowance	$ 2,800		$ 2,800
Income tax expense (benefit)	$ 24,311	$ 14,435	$ 61,235	$ 43,938
Effective tax rate			25.00%	24.90%
Excess tax benefits from stock based awards			$ 2,100	$ 1,400
Earliest Tax Year [Member] | Federal Tax Jurisdiction [Member]
Income Tax Contingency [Line Items]
Tax years subject to examination			2017
Latest Tax Year [Member] | Federal Tax Jurisdiction [Member]
Income Tax Contingency [Line Items]
Tax years subject to examination			2020