v3.26.3
Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and Cash Equivalents, at Carrying Value $ 25,621 $ 41,317
Level 1 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and Cash Equivalents, at Carrying Value 25,321 41,030
Cash And Cash Equivalents Gross Unrealized Gains 0 0
Cash and Cash Equivalents Gross Unrealized Losses 0 0
Estimated Fair Value 25,321 41,030
Level 2 [Member] | Fair Value, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
U.S. Treasury securities, Gross unrealized gains 0 134
Gross unrealized losses (104) (9)
Level 2 [Member] | Fair Value, Recurring [Member] | U.S. Treasury Securities [Member] | Short-Term Investments [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
U.S. Treasury securities, Amortized Cost 112,837 203,544
U.S. Treasury securities, Gross unrealized gains 0 134
Gross unrealized losses (104) (9)
U.S. Treasury securities, Fair Value 112,733 203,669
Level 1 And Level 2 [Member] | Fair Value, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total Amortized Cost 138,158 244,574
Total Fair Value $ 138,054 $ 244,699