Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details)

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Note 3 - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Accrued research and development $ 1,098 $ 907
Accrued legal, regulatory, professional and other 437 262
Accrued payroll and bonuses 106 426
Accrued related party 78 78
Total accrued expenses and other current liabilities 1,845 1,791
Accounts Payable and Accrued Liabilities [Member]    
Operating lease liability - current $ 126 $ 118