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Contingent Consideration - Reconciliation of the Activity Driving Contingent Consideration Balance Changes (Details) - USD ($)
$ in Thousands
3 Months Ended 7 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Business Combination, Contingent Consideration [Roll Forward]                
Beginning balance         $ 347,089      
Change in fair value $ 0 $ 83,130 $ 48,802 $ 0 131,932 $ 131,932 $ 0 $ 0
Reclassification of shares to equity         (479,021)      
Ending balance $ 0       $ 0 $ 0