XML 77 R55.htm IDEA: XBRL DOCUMENT v3.24.1
Stock-Based Compensation Expense - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Jan. 01, 2024
Jan. 01, 2023
Sep. 03, 2022
Jun. 30, 2022
Jun. 01, 2022
Oct. 31, 2023
Apr. 30, 2020
Dec. 31, 2023
Dec. 31, 2022
Dec. 09, 2022
Feb. 28, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Number of shares granted               1,860,647      
Shares of common stock reserved for future issuances               23,905,324      
Stock-based compensation expense recorded as liability               $ 255,000      
Stock-based compensation expense               $ 5,887,000 $ 5,447,000    
Weighted-average fair value of options granted to employees, directors and consultants               $ 2.13 $ 3.40    
Aggregate intrinsic value of stock options exercised               $ 100,000 $ 5,000    
Restricted stock units outstanding shares, Granted               115,790      
Common Stock                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Number of shares granted               356,083      
Restricted Stock Units                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Unvested stock options expected to be recognized over a weighted-average period               2 years 10 months 24 days      
Restricted stock units outstanding shares, Granted               154,926      
Minimum                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Vesting period               4 years      
Maximum                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Stock option expiration period               10 years      
Certain Executives                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Number of shares granted               630,000      
2020 Plan                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Shares of common stock reserved for future issuances             2,100,000        
Maximum number of common shares issued             8,800,000        
Percentage of common shares increase automatically in each year             4.00%        
Increase in Shares available for grant   1,273,106                  
Number of shares available for future grant               1,544,538      
2020 Plan | Subsequent Events                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Increase in Shares available for grant 2,288,582                    
2020 ESPP                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Number of shares granted               0      
Shares of common stock reserved for future issuances             150,000        
Maximum number of common shares issued   159,138         987,500        
Annual increase in number of shares available for issuance as percentage of outstanding shares common stock on final day of immediately preceding fiscal year             0.50%        
Purchase price of shares as percentage lower of fair market value of common stock             85.00%        
2020 ESPP | Subsequent Events                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Maximum number of common shares issued 286,072                    
Market-Based Condition Awards                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Number of shares granted               1,648,002      
Stock-based compensation expense               $ 2,000,000      
Inducement Award Plan                      
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                      
Shares of common stock reserved for future issuances           2,763,002       2,413,002 2,763,002
Increase in Shares available for grant     1,813,002 1,703,002 1,473,002 350,000          
Number of shares available for future grant               320,000