Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Prepaid Expenses - Prepaid Expenses and Other Assets (Details)

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Note 4 - Prepaid Expenses - Prepaid Expenses and Other Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Prepaid Expense and Other Assets [Abstract]    
Prepaid research and development expenses $ 854 $ 1,271
Prepaid insurance 405 893
Other prepaid expenses 477 139
Total $ 1,736 $ 2,303