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SHARE-BASED COMPENSATION - Additional Information (Details)
$ in Millions
1 Months Ended 9 Months Ended
Mar. 15, 2020
shares
May 31, 2021
shares
Sep. 30, 2021
USD ($)
performanceCondition
shares
Sep. 30, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards outstanding to officers, directors and key employees (in shares) | shares     1,800,000  
Share-based compensation     $ 5.6 $ 4.1
Unrecognized compensation expense related to share-based compensation     $ 9.0  
Remaining weighted-average period     1 year 8 months 12 days  
Shares issued net of shares for tax withholdings | shares 19,048      
2018 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of additional shares authorized (in shares) | shares   3,000,000    
Stock and stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation     $ 3.6 3.0
Stock and stock units | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period     3 years  
Stock and stock units | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period     4 years  
Long-term performance stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation     $ 1.9 $ 1.1
Award vesting period     2 years  
Performance period     2 years  
Share-based compensation award, number of performance conditions | performanceCondition     2  
Long-term performance stock units | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Possible payouts     0.00%  
Long-term performance stock units | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Possible payouts     200.00%  
2019 | Long-term performance stock units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested award performance target level, percentage 25.00%      
Award vesting rights, performance metric, percentage 0.00%