Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock-based compensation and estimated unrecognized expense related to stock option and RSU (Details)

v3.21.2
Stock-Based Compensation - Stock-based compensation and estimated unrecognized expense related to stock option and RSU (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation $ 1,349 $ 254 $ 1,545 $ 260
Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation 364 254 560 260
Stock options unrecognized expense 2,353   $ 2,353  
Remaining vesting period (in years)     2 years 6 months  
Stock options | Cost of revenues        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation 14   $ 27  
Stock options | Selling, general and administrative        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation 335 $ 254 496 $ 260
Stock options | Research and development expenses        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation 15   37  
Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation 985   985  
Restricted stock units unrecognized expense 4,470   $ 4,470  
Remaining vesting period (in years)     2 years 6 months  
Restricted Stock Units | Selling, general and administrative        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation $ 985   $ 985