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Information with Respect to Class A Common Shares that were Surrendered, Repurchased or Redeemed (Parenthetical) (Detail) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Equity, Class of Treasury Stock [Line Items]    
Stock repurchase program, authorized amount $ 135,000,000  
Class A Common Shares    
Equity, Class of Treasury Stock [Line Items]    
Stock repurchase program, authorized amount $ 135,000,000 $ 135,000,000