Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax, refund claim		$ 5,300,000		$ 5,300,000
Income tax benefit	$ 0	$ (482,017)	$ 0	$ (5,306,678)