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Loans Payable - Note 11 - Payroll Protection Program - Additional Information (Detail) - USD ($)		12 Months Ended
	Apr. 16, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 31, 2020	Oct. 01, 2016
Debt instrument face amount						$ 3,000,000
Interest Expense		$ 6,915,535	$ 5,360,192	$ 3,142,280
Cares Act Loan [Member]
Debt instrument face amount	$ 370,400
Debt instrument maturity period	2 years
Debt instrument maturity date	Apr. 16, 2022
Debt instrument interest rate	0.98%
Percent of loan that will forgiven	75.00%	60.00%			75.00%
Interest Expense		$ 936	$ 0

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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