Note 8 - Commitments and Contingencies - Supplemental Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Right-of-use asset, net and lease liabilities (in thousands)	$ 2,747	$ 2,003
Operating lease expense	1,384	1,339
Cash paid for operating lease liabilities (in thousands)	$ 1,384	$ 1,339
Weighted average remaining lease term (years) (Year)	3 years 6 months	2 years 9 months 18 days
Weighted average discount rate	6.60%	3.40%
Cost of Sales [Member]
Operating lease expense	$ 803	$ 744
General and Administrative Expense [Member]
Operating lease expense	481	458
Research and Development Expense [Member]
Operating lease expense	$ 100	$ 137