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
Sep. 30, 2021
Dec. 31, 2020
Prepaid research and development expenses $ 843 $ 622
Other prepaid expenses 191 1,932
Prepaid Expense, Current, Total $ 1,034 $ 2,554