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Convertible Preferred Stock and Stockholders' Deficit - Equity Incentive Plans - Additional Information (Detail) - shares
1 Months Ended 3 Months Ended
Sep. 30, 2023
Jun. 30, 2020
Mar. 31, 2024
Dec. 31, 2006
Restricted Stock Units        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of shares, granted     0  
Number of shares, outstanding     0  
2006 Plan [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of shares issued       100,000
Expiry of options     10 years  
Stock options expiration date     Nov. 16, 2016  
Number of options granted     0  
2010 Plan [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of shares issued     9,700,000  
Expiry of options     10 years  
Share based payment award extended expiration, month and year   2030-03    
2010 Plan [Member] | Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of shares issued 30,000,000   9,700,000  
Number of options granted 10,000,000      
2010 Plan [Member] | Minimum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Number of options granted 800,000