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Cash, Cash Equivalents and Investments - Gross Unrealized Losses and Fair Value for Available-for-Sale Investments (Detail) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Fair Value, Less than 12 months $ 30,602 $ 225,222
Unrealized Losses, Less than 12 months (73) (3,199)
Fair Value, Greater than 12 Months 26,594 93,582
Unrealized Losses, Greater than 12 Months (456) (2,118)
Fair Value 57,196 318,804
Unrealized Losses (529) (5,317)
Treasury Bills [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value, Less than 12 months   42,149
Unrealized Losses, Less than 12 months   (425)
Fair Value, Greater than 12 Months   2,487
Unrealized Losses, Greater than 12 Months   (14)
Fair Value   44,636
Unrealized Losses   (439)
Asset-Backed Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value, Less than 12 months 0 11,024
Unrealized Losses, Less than 12 months 0 (547)
Fair Value, Greater than 12 Months 4,182 2,290
Unrealized Losses, Greater than 12 Months (289) (10)
Fair Value 4,182 13,314
Unrealized Losses (289) (557)
Sovereign Bonds [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value, Less than 12 months   0
Unrealized Losses, Less than 12 months   0
Fair Value, Greater than 12 Months   990
Unrealized Losses, Greater than 12 Months   (23)
Fair Value   990
Unrealized Losses   (23)
Corporate Bonds [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value, Less than 12 months 30,602 172,049
Unrealized Losses, Less than 12 months (73) (2,227)
Fair Value, Greater than 12 Months 22,412 87,815
Unrealized Losses, Greater than 12 Months (167) (2,071)
Fair Value 53,014 259,864
Unrealized Losses $ (240) $ (4,298)