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Note 4 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Cash $ 6,774 $ 10,196    
Restricted cash 0 82    
Total $ 6,774 $ 10,278 $ 9,301 $ 5,713