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Fair Value Measurements - Summary of Level 3 Financial Assets and Liabilities (Details) - Exchange agreement embedded derivative - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at the start of the period $ 9,269 $ 0
Initial valuation 0 9,933
Revaluation (9,269) (9,933)
Settlements 0 0
Balance at the end of the period $ 0 $ 0