XML 79 R48.htm IDEA: XBRL DOCUMENT v3.25.1
Stock-Based Compensation Plans - Additional Information (Details) - USD ($)
 1 Months Ended 3 Months Ended 48 Months Ended
Jun. 04, 2025
Mar. 04, 2024
Jan. 08, 2024
Jun. 28, 2023
Aug. 01, 2021
Apr. 25, 2021
Jul. 31, 2019
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2023
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Options repriced (in shares)   3,317,596                  
Stock-based compensation, exercise price (in usd per share)   $ 1.72                  
Share-based payment arrangement               $ 1,200,000      
Repricing cost during the period               $ 100,000 $ 900,000    
Expected dividend yield (as percent)   0.00% 0.00%         0.00%      
Weight average fair value repriced stock options (in usd per share)                 $ 1.22    
Period over which compensation cost will be recognized (in years)               2 years 11 months 12 days      
General and administrative                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share-based compensation expense               $ 27,000 $ 600,000    
Research and development                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share-based compensation expense               24,000 300,000    
Maximum                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Expected term of options (in years)   4 years 7 months 28 days 4 years 9 months 21 days                
Exercised (in usd per share)   $ 3.00                  
Minimum                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Expected term of options (in years)   1 year 7 months 28 days 1 year 9 months 21 days                
Exercised (in usd per share)   $ 1.72                  
2021 Employee stock purchase plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Maximum annual contributions per employee (as a percent)           15.00%          
Purchase price of the stock, at discount from market price at purchase date (as a percent)           85.00%          
Shares available for grant (in shares)   1,200,000       200,000          
Additional shares authorized (in shares)   1,000,000                  
Shares issued under the ESPP (in shares)         271,842            
Share-based compensation expense               $ 26,000 $ 0    
2019 Omnibus Equity Incentive Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares available for grant (in shares)             1,500,000        
Expected term of options (in years)               3 years 6 months 6 years 7 days    
Expected dividend yield (as percent)               0.00% 0.00%    
Options granted in period, weighted-average grant date fair value (in usd per share)               $ 0.65 $ 0.97    
Total unrecognized compensation expense               $ 11,500,000      
2019 Omnibus Equity Incentive Plan | Incentive stock options                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting period (in years)               4 years      
2019 Omnibus Equity Incentive Plan | Maximum                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Expected term of options (in years)               10 years      
2019 Omnibus Equity Incentive Plan | Maximum | Non-statutory options                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting period (in years)               4 years      
2019 Omnibus Equity Incentive Plan | Minimum | Non-statutory options                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Vesting period (in years)               3 years      
2019 Omnibus Equity Incentive Plan, Evergreen Provision                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Additional shares authorized (in shares)             4,900,000     4,408,871  
Additional shares authorized (as a percent)             4.00%        
Increase in other share (in shares)   9,100,000   4,440,000              
2019 Omnibus Equity Incentive Plan, Evergreen Provision | Subsequent Event                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Proposed amendment to shares authorized (in shares) 7,000,000                    
2014 Equity Incentive Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares available for grant (in shares)               0      
2017 Inducement Equity Incentive Plan                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares available for grant (in shares)                     46,250
Share-based compensation expense               $ 0 $ 0