Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Income Taxes [Line Items]
Federal statutory tax rate	21.00%
Income tax expense	$ 11,054	$ 7,234
Effective tax rates on pre-tax income	16.26%	16.27%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration