XML 74 R48.htm IDEA: XBRL DOCUMENT v3.24.1
Equity Incentive Plans (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Jan. 01, 2024
Jul. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Stock-based compensation expense   $ 0.6    
Common Stock, Capital Shares Reserved for Future Issuance     46,402,832 24,512,459
Weighted average grant date fair value     $ 1.97  
Fair value of vested options     $ 5.1  
Equity Incentive Plan 2016 [Member]        
Percentage of annual increase in number of shares     5.00%  
Available for future grants under the 2016 Plan     2,368,160  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized 1,807,235      
Employee Stock Purchase Plan, 2016        
Percentage of annual increase in number of shares     1.00%  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized     30,000  
Common Stock, Capital Shares Reserved for Future Issuance     9,748  
Additional awards     0  
Employee Stock Option [Member]        
Common stock closing price     $ 3.24  
Unrecognized compensation cost related to unvested options     $ 1.8  
Restricted Stock Awards [Member] | Minimum [Member]        
Vesting period of share-based compensation award     2 years  
Restricted Stock Awards [Member] | Maximum [Member]        
Vesting period of share-based compensation award     4 years  
Stock Options And Restricted Stock Awards [Member]        
Weighted-average remaining period for recognition of compensation costs related to unvested options     1 year 8 months 12 days  
Equity Incentive Plan 2016 [Member]        
Expiration period of share-based payment award     4 years  
Available for future grants under the 2016 Plan     2,368,160 570,570
Equity Incentive Plan 2016 [Member] | Maximum [Member]        
Expiration period of share-based payment award     10 years