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STOCK-BASED COMPENSATION (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Mar. 31, 2021
Oct. 31, 2018
Mar. 31, 2021
Jun. 30, 2020
Jan. 31, 2013
Restricted Stock Units [Member] | Chief Executive Officer [Member]          
Restricted Stock Plan [Abstract]          
Number of restricted stock units granted (in shares)   644,000      
Service-Based Restricted Stock Units [Member] | Chief Executive Officer [Member]          
Restricted Stock Plan [Abstract]          
Vesting period from grant date     5 years    
Number of restricted stock units granted (in shares)   460,000      
Performance-Based Restricted Stock Units [Member] | Chief Executive Officer [Member] | Tranche One [Member]          
Restricted Stock Plan [Abstract]          
Number of restricted stock units granted (in shares)   92,000      
Minimum amount of operating income, award vesting condition   $ 12      
Performance-Based Restricted Stock Units [Member] | Chief Executive Officer [Member] | Tranche Two [Member]          
Restricted Stock Plan [Abstract]          
Number of restricted stock units granted (in shares)   92,000      
Minimum amount of operating income, award vesting condition   $ 14      
2013 Restricted Stock Plan [Member] | Minimum [Member]          
Restricted Stock Plan [Abstract]          
Vesting period from grant date     4 years    
2013 Restricted Stock Plan [Member] | Restricted Stock Units [Member]          
Restricted Stock Plan [Abstract]          
Number of common shares reserved for issuance (in shares)       800,000  
Shares available for future awards (in shares) 594,553   594,553    
2013 Restricted Stock Plan [Member] | Restricted Stock Units [Member] | Maximum [Member]          
Restricted Stock Plan [Abstract]          
Number of common shares reserved for issuance (in shares)         300,000
2013 Restricted Stock Plan [Member] | Service-Based Restricted Stock Units [Member] | Non-employee Director [Member]          
Restricted Stock Plan [Abstract]          
Vesting period from grant date     4 years    
Number of restricted stock units granted (in shares) 21,671