v3.26.1
Marketable Securities and Fair Value of Financial Assets and Liabilities - Schedule of Financial Assets and Liabilities at Fair Value on Recurring Basis (Detail) - Recurring Basis [Member] - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Total assets $ 764,958 $ 801,855
Level 1 [Member]    
Assets:    
Total assets 153,830 213,102
Level 2 [Member]    
Assets:    
Total assets 611,128 588,753
Money Market Funds [Member]    
Assets:    
Cash equivalents 153,830 213,102
Money Market Funds [Member] | Level 1 [Member]    
Assets:    
Cash equivalents 153,830 213,102
U.S. Treasury Bills and Notes [Member]    
Assets:    
Marketable Securities 611,128 588,753
U.S. Treasury Bills and Notes [Member] | Level 2 [Member]    
Assets:    
Marketable Securities $ 611,128 $ 588,753