v3.26.1
Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies - Summary of Antidilutive Securities not Included in Diluted Net Loss Per Share Calculation (Detail) - shares
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 20,930,083 20,214,204 21,038,384 20,128,384
Employee Stock Options [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 13,411,253 12,695,374 13,519,554 12,609,554
Redeemable Convertible Preferred Stock [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 2,457,143 2,457,143 2,457,143 2,457,143
Non-redeemable Convertible Preferred Stock [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 5,061,687 5,061,687 5,061,687 5,061,687