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Information with Respect to Class A Common Shares that were Surrendered or Repurchased (Detail) - USD ($) | 9 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023
Equity, Class of Treasury Stock [Line Items] |  |
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs | $ 101,000,000 |
Class A Common Shares |  |
Equity, Class of Treasury Stock [Line Items] |  |
Shares repurchased | 16,527 | 468,860
Average Price Paid Per Share | $ 32 | $ 27.04
January 1-31, 2023 | Employee | Class A Common Shares |  |
Equity, Class of Treasury Stock [Line Items] |  |
Shares repurchased |  | 3,302
Average Price Paid Per Share |  | $ 23.31
Total Number of Shares Purchased as Part of Publicly Announced Plan or Program |  | 0
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs |  | $ 0
January 1-31, 2023 | Share Repurchase Program | Class A Common Shares |  |
Equity, Class of Treasury Stock [Line Items] |  |
Shares repurchased |  | 250,000
Average Price Paid Per Share |  | $ 25.9
Total Number of Shares Purchased as Part of Publicly Announced Plan or Program |  | 250,000
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs |  | $ 106,604,000
June 1-30, 2024 | Employee | Class A Common Shares |  |
Equity, Class of Treasury Stock [Line Items] |  |
Shares repurchased | 16,527 |
Average Price Paid Per Share | $ 32 |
Total Number of Shares Purchased as Part of Publicly Announced Plan or Program | 0 |
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs | $ 101,004,000 |
April 1-30, 2023 | Share Repurchase Program | Class A Common Shares |  |
Equity, Class of Treasury Stock [Line Items] |  |
Shares repurchased |  | 200,000
Average Price Paid Per Share |  | $ 28
Total Number of Shares Purchased as Part of Publicly Announced Plan or Program |  | 200,000
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs |  | $ 101,004,000
June 1-30, 2023 | Employee | Class A Common Shares |  |
Equity, Class of Treasury Stock [Line Items] |  |
Shares repurchased |  | 15,558
Average Price Paid Per Share |  | $ 33.74
Total Number of Shares Purchased as Part of Publicly Announced Plan or Program |  | 0
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs |  | $ 101,004,000

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