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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Accrued Liabilities [Abstract]    
Salaries, employee benefits and related taxes $ 1,005 $ 2,034
Operating lease liabilities — current 205 229
Other 894 326
Total accrued liabilities $ 2,104 $ 2,589