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STOCKHOLDERS' EQUITY, Restricted Stock Plan (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
May 31, 2021
Feb. 28, 2021
Oct. 31, 2018
Dec. 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      
Serviced 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)       591,138    
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] | Serviced 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)   21,673        
2013 Restricted Stock Plan [Member] | Serviced Based Restricted Stock Units [Member] | Key Employees [Member]            
Restricted Stock Plan [Abstract]            
Number of restricted stock units granted (in shares) 3,415