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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued Research & Development Expense $ 110 $ 366
Accrued Compensation and Benefits 2,439 1,791
Accrued Unvouchered Receipts 385 796
Accrued Workers Compensation 172 382
Other Accrued Liabilities 1,554 1,755
Total Accrued Liabilities $ 4,660 $ 5,090