Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation- Additional Information (Details)

v3.22.2
Stock-Based Compensation- Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 0.68 $ 6.12
Unamortized compensation expense related to options $ 473  
Expected weighted average period of recognition of compensation expense 2 years 5 months 23 days  
Share Price $ 0.47  
Shares reserved for future offerings 6,314,810  
One-year anniversary    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 33.00%  
24-month period    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 67.00%  
ESPP    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Number of shares available for awards 11,371  
Shares reserved for future offerings 7,806  
2014 Plan    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Number of shares authorized to be awarded 829,339  
Number of shares available for awards 146,735  
Restricted Stock | One-year anniversary    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 33.00%  
Restricted Stock | 24-month period    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 67.00%