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STOCK BASED COMPENSATION EXPENSE - Narrative (Details)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2022
USD ($)
$ / shares
shares
2017 Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expiration period 10 years
Minimum | 2017 Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise period 1 year
Maximum | 2017 Plan  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise period 4 years
Time Based Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 36 months
RSUs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 3 years
Grants in period (in shares) | shares 3,460,470
RSUs | Director  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 1 year
RSUs | Technical Engineering Employees  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 3 years
Market based RSUs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of award vesting milestones 3
Vesting threshold trading days 20
Grants in period (in shares) | shares 949,026
Total grant date fair value | $ $ 2.2
Market based RSUs | Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target stock price per share (in dollars per share) | $ / shares $ 25
Market based RSUs | Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target stock price per share (in dollars per share) | $ / shares $ 55