Note 8 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Right-of-use	$ 1,297	$ 1,598
Current portion of operating leases liability	362	357
Operating leases liability, net of current portion	1,051	1,363
Total operating leases liabilities	$ 1,413	$ 1,720
Weighted average remaining lease term (in years) (Year)	4 years 3 months	5 years 2 months 4 days
Weighted average discount rate	8.50%	8.50%