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Note 6 - Intangible Assets (Details Textual)
Jun. 30, 2023
Dec. 31, 2022
Finite-Lived Intangible Assets, Remaining Amortization Period (Year) 3 years 9 months 18 days 4 years 3 months 18 days
Minimum [Member]    
Finite-Lived Intangible Assets, Remaining Amortization Period (Year) 3 years  
Maximum [Member]    
Finite-Lived Intangible Assets, Remaining Amortization Period (Year) 4 years