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The Company and Significant Accounting Policies - Summary of Components of AOCI (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Accumulated Other Comprehensive Income Loss [Line Items]            
Other comprehensive income (loss) $ 4 $ 49 $ 9      
Income tax (expense) benefit (1) (12) (2)      
Amounts reclassified from AOCI (1) (4) (1)      
Other comprehensive income (loss), net of tax 2 33 6 $ 34 $ 41 $ 140
Foreign Currency Translation            
Accumulated Other Comprehensive Income Loss [Line Items]            
Balance, Beginning (1,249) (1,249) (1,249)   (1,249)  
Balance, Ending (1,249) (1,249) (1,249)   (1,249)  
Marketable Securities            
Accumulated Other Comprehensive Income Loss [Line Items]            
Balance, Beginning 487 454 448   448  
Other comprehensive income (loss) 4 49 9      
Income tax (expense) benefit (1) (12) (2)      
Amounts reclassified from AOCI (1) (4) (1)      
Other comprehensive income (loss), net of tax 2 33 6      
Balance, Ending 489 487 454   489  
Accumulated Other Comprehensive Income (Loss)            
Accumulated Other Comprehensive Income Loss [Line Items]            
Balance, Beginning (762) (795) (801)   (801)  
Balance, Ending $ (760) $ (762) $ (795)   $ (760)