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STOCK-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS - Equity Incentive Plan (Details) - shares
May 03, 2018
Nov. 30, 2016
Dec. 31, 2018
Nov. 29, 2016
2008 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized (in shares)   3,000,000    
2008 Plan | Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized (in shares)       500,000
2008 Plan | Stock Appreciation Rights (SARs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized (in shares)       500,000
2008 Plan | Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized (in shares)       350,000
2008 Plan | Common Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Additional shares authorized (in shares)   5,250,000    
Number of shares authorized (in shares)   14,605,000   9,355,000
2018 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized (in shares) 16,406,939      
Plan expiration period 10 years      
Shares available for grant (in shares)     12,987,351