Income Tax Expense - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 19,200,000		$ 10,300,000
Income tax paid	$ 109,702,550	$ 37,820,228