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Supplementary Balance Sheet Information - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract]    
Compensation related accruals $ 3,088 $ 4,671
Accrued clinical trial expense 1,177 1,232
Other expenses 1,475 2,315
Total accrued liabilities $ 5,740 $ 8,218