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Investments - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]        
Realized gains losses from available for sale securities $ 0 $ 0 $ 0 $ 0
Purchases of equity securities 0 0 0 0
Sales of equity securities $ 0 $ 0 $ 0 $ 0