Note 6 - Intangible Assets (Details Textual)	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets, Remaining Amortization Period (Year)	4 years 1 month 6 days	4 years 3 months 18 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