Note 2 - Cash, Cash Equivalents, and Restricted Cash - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Cash and cash equivalents	$ 4,894	$ 898
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	7,886	3,831
Other Current Assets [Member]
Restricted cash	2	31
Other Assets [Member]
Restricted cash	$ 2,990	$ 2,902