Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax, refund claim	$ 3,900,000		$ 3,900,000
Additional income tax benefit	500,000		1,400,000
Income tax benefit	$ 482,017	$ 58,500	$ 5,306,678	$ 58,500