General form of registration statement for all companies including face-amount certificate companies

STOCK-BASED COMPENSATION (Narrative) (Details)

v3.21.4
STOCK-BASED COMPENSATION (Narrative) (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 9 Months Ended 12 Months Ended
Jun. 23, 2021
USD ($)
Apr. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
$ / shares
Dec. 31, 2019
USD ($)
$ / shares
Jun. 07, 2021
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expiration period     1 year        
Cost not yet recognized     $ 4,537   $ 2,246    
Period for cost yet to be recognized     2 years 7 months 13 days   2 years 7 months 24 days    
Remaining expiration period     24 months        
Founders terminated or leave period     12 months        
Percentage of vesting rights     0.50        
Incremental cost     $ 623        
Notes receivable, related parties   $ 1,199          
Exercises of fully vested options   740          
Loans not used by founders to exercise stock options     $ 459        
Weighted average fair value of option | $ / shares         $ 0.71 $ 0.47  
Tranche One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting rights, percentage     75.00%        
Tranche Two              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting rights, percentage     25.00%        
Other Noncurrent Assets              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Loans not used by founders to exercise stock options     $ 459        
General and administrative              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Incremental cost     $ 47        
Founders Promissory Note              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Notes receivable, related parties   $ 1,199         $ 1,076
Loan granted amount $ 123            
Stated rate   0.0089          
Founders Awards              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period     3 years   4 years    
Employees              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock based compensation expenses         $ 162 $ 52  
Consultants              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock based compensation expenses     $ 273 $ 40      
Stock Option Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Vesting period     4 years   4 years    
Stock Option Plan | Employees              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock based compensation expenses     $ 2,038 417 $ 420 326  
Stock Option Plan | Employees | General and administrative              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock based compensation expenses     $ 1,285 $ 33 $ 92 $ 43  
Minimum | Stock Option Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expiration period         10 years    
Maximum | Stock Option Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expiration period     10 years