Note 11 - Leases - Lease Right-of-use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Operating lease right-of-use assets, net	$ 105	$ 179
Current portion of operating lease liabilities	98	91
Operating lease liabilities	13	97
Total lease liabilities	$ 111	$ 188