v3.25.2
Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
USD ($)
shares
Jun. 30, 2024
shares
Jun. 30, 2025
USD ($)
Segment
shares
Jun. 30, 2024
shares
Dec. 31, 2024
USD ($)
Nov. 30, 2024
USD ($)
Feb. 03, 2023
shares
Summary Of Significant Accounting Policies [Line Items]              
Accumulated deficit | $ $ 603,827   $ 603,827   $ 597,330    
Options to purchase common stock excluded from computation of diluted net loss per share 3,900,000 3,800,000 4,200,000 3,900,000      
Number of warrants to purchase common stock 600,000   600,000        
Dilutive effect of common warrants 121,000            
Weighted-average remaining lease term 1 year 7 months 20 days   1 year 7 months 20 days   2 years 1 month 20 days    
Number of operating segments | Segment     1        
ALZET Product Line [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Terms of the agreement, LIC | $           $ 17,500  
Warrant [Member]              
Summary Of Significant Accounting Policies [Line Items]              
Options to purchase common stock excluded from computation of diluted net loss per share 3,600,000 3,600,000 3,600,000 3,600,000      
Number of warrants to purchase common stock             2,000,000