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Balance Sheet Details - Accrued Compensation and Related Benefits (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]    
Accrued incentive compensation $ 1,779 $ 14
Accrued vacation 3,737 3,388
Accrued payroll taxes and other 1,547 1,492
Accrued severance and retention bonuses 901 26
Accrued compensation and related benefits 7,964 4,920
Accrued bonuses, noncurrent $ 600 $ 100