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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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