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STOCK-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS (Stock-Based Compensation) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 10.5 $ 8.6 $ 8.8  
Total income tax benefit from stock-based compensation $ 2.8 $ 2.3 $ 1.9  
Expected forfeiture rate employees 6.00%      
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award Vesting Period (in years) 5 years      
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award Vesting Period (in years) 10 years      
Restricted Stock | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award Vesting Period (in years) 3 years      
Restricted Stock | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award Vesting Period (in years) 5 years      
2000 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options outstanding, number (in shares) 2,000      
Options exercisable, weighted average exercise price (in dollars per share) $ 23.01      
2010 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized (in shares)       6,000,000