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Investments - Summary of Investments (Detail) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]    
Cost $ 41,571 $ 40,252
Gross Unrealized Gains 285 259
Gross Unrealized Losses (10) (38)
Fair Value 41,846 40,473
Corporate Debt Securities [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Cost 1,480 4,249
Gross Unrealized Gains 0 1
Gross Unrealized Losses (10) (38)
Fair Value 1,470 4,212
Government securities [Member]    
Debt Securities, Available-for-Sale [Line Items]    
Cost 40,091 36,003
Gross Unrealized Gains 285 258
Gross Unrealized Losses 0 0
Fair Value $ 40,376 $ 36,261