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Note 9 - Commitments and Contingencies - Operating Lease Assets and Liabilities (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Other Assets [Member]    
Operating lease right of use asset $ 1,093,382 $ 1,242,832
Other Liabilities [Member]    
Operating lease liabilities $ 1,311,570 $ 1,443,966