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Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Other Current Liabilities    
Accrued accounts payable $ 96 $ 112
Accrued employee compensation and benefits 481 614
Other current liabilities 44 38
Accrued Liabilities, Current, Total $ 621 $ 764