Note 6 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Operating Lease, Liability, Noncurrent	$ 5,565	$ 1,664
Other Long-term Assets [Member]
Operating lease ROU assets	8,355	4,288
Other Accrued Liabilities [Member]
Operating lease liabilities	2,303	2,133
Other Long-term Liabilities [Member]
Operating Lease, Liability, Noncurrent	$ 5,565	$ 1,664