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Equity-Based Compensation - Summary of Equity-Based Compensation Expense related to Non-Vested RSUs (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
shares
Service-Based RSUs  
Share-based Compensation  
Unrecognized compensation cost $ 1,607
Weighted average period 1 year 4 months 23 days
Performance-Based RSUs  
Share-based Compensation  
Unrecognized compensation cost $ 3,159
Weighted average period 1 year 8 months 19 days
RSUs  
Share-based Compensation  
Unrecognized compensation cost $ 4,766
Weighted average period 1 year 7 months 8 days
Two Thousand Fourteen Plan [Member]  
Share-based Compensation  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | shares 0