Note 5 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Other Long-term Assets [Member]
Operating lease ROU assets	$ 8,571	$ 4,288
Other Accrued Liabilities [Member]
Operating lease liabilities	2,225	2,133
Other Long-term Liabilities [Member]
Operating Lease, Liability, Noncurrent	$ 5,758	$ 1,664