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Net Income (Loss) Per Share - Summary of Antidilutive Securities Excluded from Computation Of Earnings Per Share (Detail) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 10,136,198,000 14,278,603,000 14,278,603,000
Redeemable public warrants      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 836,474,000 0 0
Contingency consideration      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 3,018,699,000 0 0
Retroactively restated redeemable convertible Series C preferred units      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 6,281,025,000 14,278,603,000 14,278,603,000