Investments - Schedule Of Long Term Investments (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Longterm Investments [Line Items]
Beginning balance	$ 14,068,821	$ 40,933,283
Additions	525,000
Disposals	(169,818)
Fair value adjustments	26,370,803	(5,459,462)	$ 4,797,283
Applied to consideration in business combination		(21,405,000)
Ending balance	40,794,806	14,068,821	40,933,283
Convertible Debt Securities [member]
Longterm Investments [Line Items]
Beginning balance	7,533,000	30,336,000
Conversion of notes receivable	(7,533,000)
Fair value adjustments		(1,398,000)
Applied to consideration in business combination		(21,405,000)
Ending balance		7,533,000	30,336,000
Equity Securities [member]
Longterm Investments [Line Items]
Beginning balance	6,535,821	10,597,283
Additions	525,000
Disposals	(169,818)
Conversion of notes receivable	7,533,000
Fair value adjustments	26,370,803	(4,061,462)
Ending balance	$ 40,794,806	$ 6,535,821	$ 10,597,283