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Fair Value Measurements (as restated) - Level 3 Roll Forward (Details) - Fair Value, Inputs, Level 3
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance at beginning of period $ (6,372)
Change in fair value 1,944
Balance at end of period $ (4,428)