Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Contingency [Line Items]
Valuation allowance	$ 2,800		$ 2,800
Income tax expense (benefit)	$ 20,978	$ 16,249	$ 36,925	$ 29,504
Effective tax rate			25.10%	24.80%
Excess tax benefits from stock based awards			$ 1,200	$ 1,100
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