Note 9 - Commitments and Contingencies - Supplemental Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Right-of-use asset, net and lease liabilities (in thousands)	$ 4,738		$ 4,738		$ 2,747
Lease expense	$ 353	$ 362	$ 718	$ 659
Weighted average remaining lease term (years) (Year)	3 years 10 months 24 days		3 years 10 months 24 days		3 years 6 months
Weighted average discount rate	7.20%		7.20%		6.60%
Cost of Sales [Member]
Lease expense	$ 195	209	$ 404	385
General and Administrative Expense [Member]
Lease expense	126	121	250	238
Research and Development Expense [Member]
Lease expense	$ 32	$ 32	$ 64	$ 36