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Equity-Based Compensation - Restricted Stock Activity (Detail) - Restricted Stock Award [Member] - $ / shares
 9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unvested, Number of Shares/Units, Beginning balance 1,045,202 926,627
Granted, Number of Shares 515,202 650,396
Cancelled, Number of Shares (175,705) (145,205)
Vested, Number of Shares (373,983) (386,616)
Unvested, Number of Shares/Units, Ending balance 1,010,716 1,045,202
Unvested, Weighted Average Grant-Date Fair Value, Beginning balance $ 54.89 $ 37.84
Granted, Weighted Average Grant-Date Fair Value 76.53 64.65
Cancelled, Weighted Average Grant-Date Fair Value 56.55 49.03
Vested, Weighted Average Grant-Date Fair Value 49.44 32.64
Unvested, Weighted Average Grant-Date Fair Value, Ending balance $ 67.65 $ 54.89