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Note 6 - Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Prepaid inventory $ 0 $ 0
Restricted cash 1,009 1,065
Prepaid insurance 594 916
Other 283 129
Prepaid and current assets $ 1,886 $ 2,110