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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Fair value disclosure    
Carrying value of debt obligations $ 112,845 $ 155,985
Carrying value
   
Fair value disclosure    
Carrying value of debt obligations 105,832 132,756
Fair value disclosure
   
Fair value disclosure    
Fair value of debt obligations 105,842 132,904
Term Loan
   
Fair value disclosure    
Carrying value of debt obligations 83,750 95,000
Term Loan | Carrying value
   
Fair value disclosure    
Carrying value of debt obligations 83,750 95,000
Term Loan | Fair value disclosure
   
Fair value disclosure    
Fair value of debt obligations 83,750 95,000
Notes payable
   
Fair value disclosure    
Carrying value of debt obligations 22,082 37,756
Notes payable | Carrying value
   
Fair value disclosure    
Carrying value of debt obligations 22,082 37,756
Notes payable | Fair value disclosure
   
Fair value disclosure    
Fair value of debt obligations $ 22,092 $ 37,904