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Note 6 - Accrued Expenses - Accrued Expenses and Other Current Liabilities (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Deferred revenue $ 10,581,146 $ 3,764,696
Compensation 2,378,035 2,811,700
Research and development vendor costs 1,551,920 256,397
Other 1,276,513 1,426,163
Professional fees 536,997 527,026
Accrued expenses and other current liabilities 16,852,781 9,252,812
Accrued Expenses and Other Current Liabilities [Member]    
Lease liability, current portion $ 528,170 $ 466,830