Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income tax provision	$ 17,622	$ 12,843	$ 28,244	$ 19,958
Effective income tax rate	24.80%	24.80%	24.00%	24.20%