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Note 4 - Prepaid and Other Current Assets - Summary of Prepaid and Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Prepaid expenses $ 886 $ 966
Receivable for issuance of common stock 0 1,679
Other 57 61
Total prepaid and other current assets $ 943 $ 2,706