Annual report [Section 13 and 15(d), not S-K Item 405]

Common Stock - Stock Warrants - Additional Information (Detail)

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Common Stock - Stock Warrants - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Feb. 29, 2024
Class of Warrant or Right [Line Items]        
Proceeds from exercise of warrants $ 682 $ 227 $ 24  
Percentage of voting power 50.00%      
Warrants Issued in December 2019 [Member]        
Class of Warrant or Right [Line Items]        
Warrants to purchase common stock 295,126 98,333    
Exercise price per unit of warrant $ 2.31 $ 2.31    
Proceeds from exercise of warrants $ 700 $ 200    
Pre Funded Warrants        
Class of Warrant or Right [Line Items]        
Percentage of outstanding shares of common stock 50.00%      
Pre Funded Warrants | Private Placement [Member]        
Class of Warrant or Right [Line Items]        
Exercise price per unit of warrant       $ 0.001
Pre Funded Warrants | Private Placement [Member] | Common Stock [Member]        
Class of Warrant or Right [Line Items]        
Warrants to purchase common stock       13,086,151
Exercise price per unit of warrant       $ 4.906