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Equity-Based Compensation - Schedule of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs)
12 Months Ended
Dec. 31, 2019
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding at December 31, 2018 1,385,255
Granted 1,500,000
Vested (446,728)
Outstanding at December 31, 2019 2,490,277
Performance Based Restricted Stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance-based RSU adjustment 51,750