Income Taxes - Components of Income Tax Benefits (Detail) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
U.S. federal
Current		$ 271,356
Deferred	$ 45,465	4,309,534
US state and local
Current		(1,464)
Deferred	13,035	1,570,368
Income tax benefit	$ 58,500	$ 6,149,794

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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