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EQUITY-BASED COMPENSATION (Details) (USD $)
3 Months Ended
Mar. 31, 2012
May 04, 2012
Restricted Stock
   
Weighted-Average Grant Date Fair Value    
Outstanding at the beginning of the period (in dollars per share) $ 26.43  
Granted (in dollars per share) $ 18.93  
Vested (in dollars per share) $ 27.83  
Outstanding at the end of the period (in dollars per share) $ 26.35  
Restricted stock activity    
Outstanding at the beginning of the period (in shares) 1,157,238  
Granted (in shares) 1,350  
Vested (in shares) (49,988)  
Outstanding at the end of the period (in shares) 1,108,600  
Restricted stock units to be granted   381,100
Stock Options
   
Stock options activity    
Outstanding at the beginning of the period (in shares) 280,425  
Forfeited (in shares) (26,200)  
Outstanding at the end of the period (in shares) 254,225  
Weighted-Average Exercise Price    
Outstanding at the beginning of the period (in dollars per share) $ 27.29  
Forfeited (in dollars per share) $ 26.76  
Outstanding at the end of the period (in dollars per share) $ 27.34  
Weighted-Average Remaining Contractual Term (in years)    
Options outstanding (in years) 1.4  
Intrinsic Value    
Options outstanding $ 0