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Note 15 - Income Taxes (Details Textual) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2018
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Income Tax Expense (Benefit) $ 4,456 $ 1,340   $ 8,264 $ 4,020  
Effective Income Tax Rate Reconciliation, Percent (3.00%)          
Effective Income Tax Rate Reconciliation, Tax Credit, Percent       1.00% 1.00%  
Other Noncash Income Tax Expense     $ 563,252      
Income Tax Examination, Penalties and Interest Expense       $ 0    
Deferred Tax Assets, Net of Valuation Allowance $ 0     $ 0    
Domestic Tax Jurisdiction [Member]            
Operating Loss Carryforwards           $ 17,660,934
Operating Loss Carryforwards, Not Subject to Expire           16,055,226
Operating Loss Carryforwards, Subject to Expire           1,605,708
Tax Credit Carryforward, Amount           856,303
State and Local Jurisdiction [Member]            
Operating Loss Carryforwards           7,764,377
Operating Loss Carryforwards, Not Subject to Expire           7,513,712
Operating Loss Carryforwards, Subject to Expire           250,665
Tax Credit Carryforward, Amount           $ 952,145
Maximum [Member]            
Effective Income Tax Rate Reconciliation, Percent   1.00%