Note 8 - Leases - Remaining Terms and Discount Rates (Details)	Dec. 31, 2023
Weighted average remaining lease terms (in years), operating leases (Year)	3 years 8 months 12 days
Weighted average discount rate, operating leases	9.60%
Minimum [Member]
Remaining leases terms (in years), operating leases (Year)	2 months 12 days
Discount rates, operating leases	2.80%
Maximum [Member]
Remaining leases terms (in years), operating leases (Year)	4 years 1 month 6 days
Discount rates, operating leases	11.60%