Income Taxes - Summary of Provision for Income Taxes and Corresponding Effective Tax Rate (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 7,565	$ 5,406
Earnings before income tax	$ 40,474	$ 17,279
Effective tax rate	18.70%	31.30%