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Stock-Based Compensation - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended 11 Months Ended
Jul. 24, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jan. 01, 2024
Dec. 31, 2023
Jun. 30, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Stock options shares outstanding   15,256,582   15,256,582   15,256,582   13,110,717  
Common stock, shares issued   72,887,538   72,887,538   72,887,538   72,779,077  
Number of options outstanding, Options exercised       0          
Payments of dividends of common stock       $ 0          
Expected dividend yield   0.00% 0.00% 0.00% 0.00%        
Compensation expense related to the unvested option   $ 1,100,000   $ 1,100,000   $ 1,100,000      
Unvested option shares cancelled due to termination           600,000      
Maximum                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Expected term   6 years 1 month 6 days 6 years 1 month 6 days 6 years 1 month 6 days 6 years 1 month 6 days        
Minimum                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Expected term   5 years 6 months 5 years 6 months 5 years 6 months 5 years 6 months        
ESPP                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Expected term       6 months          
Employee Stock Option                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Unrecognized stock-based compensation cost   $ 20,000,000   $ 20,000,000   $ 20,000,000      
Estimated weighted average amortization period       2 years 8 months 12 days          
RSU Member                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Number of shares, granted       0          
2022 Stock Inducement Plan                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Stock options shares outstanding   1,247,708   1,247,708   1,247,708      
Shares granted   3,000,000   3,000,000   3,000,000      
Shares available for future issuance   1,752,292   1,752,292   1,752,292      
2018 Plan                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Number of stock options exercise price modified 9,904,755                
Modified exercise price $ 2.28                
Exercise prices, lower range 2.44                
Exercise prices, upper range $ 22.85                
Stock - based compensation expense           $ 3,000,000      
Incremental fair value $ 4,700,000                
2018 Equity Incentive Plan                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Stock options shares outstanding   12,645,480   12,645,480   12,645,480      
Shares available for future issuance   2,843,990   2,843,990   2,843,990      
Number of shares will increase automatically through every year on specified date       --01-01          
Number of shares increase automatically continuing through maximum period       beginning on January 1, 2019 and continuing through and including January 1, 2028          
Weighted average grant date fair value of options granted   $ 0.54   $ 0.67          
2018 Equity Incentive Plan | Common Stock                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Maximum number of shares authorized available for issuance   1,600,692   1,600,692   1,600,692      
Increase in number of shares reserved for issuance as percentage of total number of shares of capital stock outstanding on last date of preceding calendar year       5.00%          
2018 Equity Incentive Plan | Maximum | Common Stock                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Maximum number of shares authorized available for issuance   4,000,000   4,000,000   4,000,000      
2018 Equity Incentive Plan | Incentive Stock Options | Maximum | Common Stock                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Maximum number of shares issued upon exercise of incentive stock options   12,500,000   12,500,000   12,500,000      
2018 Equity Incentive Plan | RSU Member                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Stock options shares outstanding   185,416   185,416   185,416      
Option grant vesting period       3 years          
2015 Equity Incentive Plan                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Option grant vesting period       4 years          
Options to purchase of common stock outstanding   1,363,394   1,363,394   1,363,394      
2015 Equity Incentive Plan | Maximum                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Options granted expiry period       10 years          
2018 Employee Stock Purchase Plan | Common Stock                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Shares available for future issuance   657,095   657,095   657,095     200,000
Additional shares available for future issuance             0    
Common stock, shares issued   676,129   676,129   676,129      
Authorized an offering beginning period       Nov. 16, 2018          
Authorized an offering ending period       May 15, 2019          
Authorized an additional offering beginning period       May 16, 2024          
2018 Employee Stock Purchase Plan | Maximum | Common Stock                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Percentage of annual increase in number of common stock shares       1.00%          
Annual increase in number of common stock shares       375,000          
Option price per share of common stock at fair market value       85.00%