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SHAREHOLDERS’ EQUITY AND SHARE-BASED COMPENSATION Stock Repurchase Plan & Share-Based Compensation (Details)
$ / shares in Units, $ in Thousands
3 Months Ended
May 18, 2016
$ / shares
shares
Mar. 31, 2017
USD ($)
component
$ / shares
shares
Mar. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2016
shares
Stock Repurchase Plan        
Capacity available to repurchase common stock under senior secured term loan (in dollars) | $   $ 394,000    
Share-Based Compensation        
Share-based compensation expense (in dollars) | $   700 $ 1,900  
Estimated unrecognized compensation costs (in dollars) | $   $ 5,300    
Weighted average remaining requisite service period for stock options over which unrecognized compensation costs would be recognized   2 years 29 days    
Weighted average fair value of stock options granted and total intrinsic value of stock options exercised        
Weighted average grant date fair value of stock options granted per share (in usd per share) | $ / shares   $ 0.00 $ 15.77  
Intrinsic value of options exercised | $   $ 868 $ 601  
Grant date fair value of stock options that vested | $   $ 89 $ 187  
Minimum        
Share-Based Compensation        
Share based compensation arrangement, estimated forfeiture rate   0.00%    
Maximum        
Share-Based Compensation        
Share based compensation arrangement, estimated forfeiture rate   40.00%    
Employee and non employee stock option | Service-Based        
Share-Based Compensation        
Outstanding (in shares)   800,000    
Employee and non employee stock option | Service-Based | Minimum        
Share-Based Compensation        
Share-based compensation arrangement by share-based payment award, award vesting period   3 years    
Employee and non employee stock option | Service-Based | Maximum        
Share-Based Compensation        
Share-based compensation arrangement by share-based payment award, award vesting period   4 years    
Expiration term   10 years    
Employee and non employee stock option | Market-Based        
Share-Based Compensation        
Outstanding (in shares)   1,000,000    
Allowable performance period before expiration date   3 years    
Number of components of an award | component   2    
Employee and non employee stock option | Market-Based | Minimum        
Share-Based Compensation        
Share-based compensation arrangement by share-based payment award, award vesting period   3 years    
Expiration term   10 years    
Employee and non employee stock option | Market-Based | Maximum        
Share-Based Compensation        
Share-based compensation arrangement by share-based payment award, award vesting period   4 years    
Employee and non employee stock option | Market-Based, ordinary performance | Minimum        
Share-Based Compensation        
Percentage of compounded annual gain of stock price over exercise price required for the award to vest   20.00%    
Employee and non employee stock option | Market-Based, extraordinary performance | Minimum        
Share-Based Compensation        
Percentage of compounded annual gain of stock price over exercise price required for the award to vest   25.00%    
Employee and non employee stock option | Performance-Based        
Share-Based Compensation        
Outstanding (in shares)   0    
Vesting percentage for awards that vest upon achievement of certain criteria   25.00%    
Cumulative vesting percentage for awards that vest in equal annual installments   75.00%    
Employee and non employee stock option | Performance-Based | Minimum        
Share-Based Compensation        
Share-based compensation arrangement by share-based payment award, award vesting period   10 years    
Option        
Share-Based Compensation        
Outstanding (in shares)   1,775,653   1,996,509
Stock options granted (in shares)   0 100,000.00  
Weighted average exercise price of stock options granted (in usd per share) | $ / shares   $ 0.00 $ 27.48  
Share Repurchase Program, Current        
Stock Repurchase Plan        
Number of shares of common stock authorized to be purchased (in shares) 4,600,000.0      
Percentage of outstanding shares authorized to be repurchased 25.00%      
Minimum purchase price authorized (in usd per share) | $ / shares $ 1.00      
Maximum purchase price authorized (in usd per share) | $ / shares $ 500.00      
Remaining number of shares available for repurchase under the plan (in shares)   3,500,000    
Share Repurchase Programs        
Stock Repurchase Plan        
Number of shares of common stock purchased (in shares)   400,000 500,000  
Average purchase price per share (in usd per share) | $ / shares   $ 25.10 $ 25.17