SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Revolving credit facility, Carrying value $ 286,000,000 $ 199,230,000
Senior notes, Carrying value 300,000,000 0
Fair value, Level 2 inputs
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Revolving credit facility, Estimated fair value (Level 2) 286,000,000 199,230,000
Senior notes, Estimated fair value (Level 2) $ 314,625,000 $ 0