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Note 5 - Intangible Assets (Details Textual)
9 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets, Remaining Amortization Period (Year) 4 years 6 months 5 years 2 months 12 days
Minimum [Member]    
Finite-Lived Intangible Assets, Remaining Amortization Period (Year) 0 years  
Maximum [Member]    
Finite-Lived Intangible Assets, Remaining Amortization Period (Year) 5 years