v3.26.3
FAIR VALUE MEASUREMENTS - Schedule of Fair Value of Assets Measured on a Recurring Basis (Detail) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Financial assets    
Cash equivalents $ 44,213 $ 23,637
Total financial assets 2,051,466 1,416,233
Commercial paper | Recurring    
Financial assets    
Cash equivalents 9,265  
U.S. treasury securities    
Financial assets    
Marketable debt securities 847,996 653,341
Corporate notes    
Financial assets    
Marketable debt securities 514,295 333,241
U.S. government-sponsored enterprise securities    
Financial assets    
Marketable debt securities 451,805 252,634
Commercial paper    
Financial assets    
Marketable debt securities 18,819 7,017
Municipal securities    
Financial assets    
Marketable debt securities   5,001
Quoted Prices in Active Markets (Level 1)    
Financial assets    
Total financial assets 174,338 141,362
Quoted Prices in Active Markets (Level 1) | Commercial paper | Recurring    
Financial assets    
Cash equivalents 0  
Quoted Prices in Active Markets (Level 1) | U.S. treasury securities    
Financial assets    
Marketable debt securities 0 0
Quoted Prices in Active Markets (Level 1) | Corporate notes    
Financial assets    
Marketable debt securities 0 0
Quoted Prices in Active Markets (Level 1) | U.S. government-sponsored enterprise securities    
Financial assets    
Marketable debt securities 0 0
Quoted Prices in Active Markets (Level 1) | Commercial paper    
Financial assets    
Marketable debt securities 0 0
Quoted Prices in Active Markets (Level 1) | Municipal securities    
Financial assets    
Marketable debt securities   0
Significant Observable Inputs (Level 2)    
Financial assets    
Total financial assets 1,877,128 1,274,871
Significant Observable Inputs (Level 2) | Commercial paper | Recurring    
Financial assets    
Cash equivalents 9,265  
Significant Observable Inputs (Level 2) | U.S. treasury securities    
Financial assets    
Marketable debt securities 847,996 653,341
Significant Observable Inputs (Level 2) | Corporate notes    
Financial assets    
Marketable debt securities 514,295 333,241
Significant Observable Inputs (Level 2) | U.S. government-sponsored enterprise securities    
Financial assets    
Marketable debt securities 451,805 252,634
Significant Observable Inputs (Level 2) | Commercial paper    
Financial assets    
Marketable debt securities 18,819 7,017
Significant Observable Inputs (Level 2) | Municipal securities    
Financial assets    
Marketable debt securities   5,001
Significant Unobservable Inputs (Level 3)    
Financial assets    
Total financial assets 0 0
Significant Unobservable Inputs (Level 3) | Commercial paper | Recurring    
Financial assets    
Cash equivalents 0  
Significant Unobservable Inputs (Level 3) | U.S. treasury securities    
Financial assets    
Marketable debt securities 0 0
Significant Unobservable Inputs (Level 3) | Corporate notes    
Financial assets    
Marketable debt securities 0 0
Significant Unobservable Inputs (Level 3) | U.S. government-sponsored enterprise securities    
Financial assets    
Marketable debt securities 0 0
Significant Unobservable Inputs (Level 3) | Commercial paper    
Financial assets    
Marketable debt securities 0 0
Significant Unobservable Inputs (Level 3) | Municipal securities    
Financial assets    
Marketable debt securities   0
Money market funds    
Financial assets    
Cash equivalents 173,768 140,445
Restricted cash (money market funds) 570 917
Money market funds | Quoted Prices in Active Markets (Level 1)    
Financial assets    
Cash equivalents 173,768 140,445
Restricted cash (money market funds) 570 917
Money market funds | Significant Observable Inputs (Level 2)    
Financial assets    
Cash equivalents 0 0
Restricted cash (money market funds) 0 0
Money market funds | Significant Unobservable Inputs (Level 3)    
Financial assets    
Cash equivalents 0 0
Restricted cash (money market funds) 0 0
U.S. treasury securities    
Financial assets    
Cash equivalents 34,948 18,952
U.S. treasury securities | Quoted Prices in Active Markets (Level 1)    
Financial assets    
Cash equivalents 0 0
U.S. treasury securities | Significant Observable Inputs (Level 2)    
Financial assets    
Cash equivalents 34,948 18,952
U.S. treasury securities | Significant Unobservable Inputs (Level 3)    
Financial assets    
Cash equivalents $ 0 0
U.S. government-sponsored enterprise securities    
Financial assets    
Cash equivalents   2,690
U.S. government-sponsored enterprise securities | Quoted Prices in Active Markets (Level 1)    
Financial assets    
Cash equivalents   0
U.S. government-sponsored enterprise securities | Significant Observable Inputs (Level 2)    
Financial assets    
Cash equivalents   2,690
U.S. government-sponsored enterprise securities | Significant Unobservable Inputs (Level 3)    
Financial assets    
Cash equivalents   0
Commercial paper    
Financial assets    
Cash equivalents   1,995
Commercial paper | Quoted Prices in Active Markets (Level 1)    
Financial assets    
Cash equivalents   0
Commercial paper | Significant Observable Inputs (Level 2)    
Financial assets    
Cash equivalents   1,995
Commercial paper | Significant Unobservable Inputs (Level 3)    
Financial assets    
Cash equivalents   $ 0