Note 9 - Commitments and Contingencies - Supplemental Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Right-of-use asset, net and lease liabilities (in thousands)	$ 2,508		$ 2,747
Lease expense	$ 364	$ 299
Weighted average remaining lease term (years) (Year)	3 years 1 month 6 days		3 years 6 months
Weighted average discount rate	6.80%		6.60%
Cost of Sales [Member]
Lease expense	$ 209	176
General and Administrative Expense [Member]
Lease expense	123	119
Research and Development Expense [Member]
Lease expense	$ 32	$ 4