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Schedule of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Professional fees $ 250 $ 181
Personnel related 619 1,303
Outside research and development services 2,439 2,219
Insurance 333
Other 79 25
     Accrued expenses, net $ 3,720 $ 3,728