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STOCKHOLDERS' EQUITY - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2021
USD ($)
installment
shares
Sep. 30, 2020
USD ($)
shares
May 19, 2020
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common shares left remaining to repurchase under the plan (up to) (in shares) 510,004   510,004    
Restricted Stock Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vested in period, net (in shares) 2,576 2,576 479,206 306,550  
Selling, General and Administrative Expenses          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation | $ $ 1.8 $ 1.1 $ 5.3 $ 4.1  
Omnibus Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares reserved for share-based payments (in shares)         3,000,000
Omnibus Plan | Member of the Board of Directors          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of vesting installments | installment     3    
Omnibus Plan | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period     1 year    
Common Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares repurchased and retired (in shares)     0 0