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FAIR VALUE MEASUREMENTS (Details) (Fair Value, Measurements, Recurring [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments for contractual obligations $ 8,723 $ 7,408  
Interest Rate Derivative Assets, at Fair Value 0 1,048  
Preferred stock 250 250  
Derivative Financial Instruments, Liabilities, Fair Value Disclosure (126) (7,376)  
Assets, Fair Value Disclosure 8,847 1,330  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Preferred stock 250 250  
Fair Value, Inputs, Level 1 [Member]
      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments for contractual obligations 8,723 7,408  
Interest Rate Derivative Assets, at Fair Value 0 0  
Preferred stock 0 0  
Derivative Financial Instruments, Liabilities, Fair Value Disclosure 0 0  
Assets, Fair Value Disclosure 8,723 7,408  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Preferred stock 0 0  
Fair Value, Inputs, Level 2 [Member]
      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Interest Rate Derivative Assets, at Fair Value 0 1,048  
Preferred stock 0 0  
Derivative Financial Instruments, Liabilities, Fair Value Disclosure (126) (7,376)  
Assets, Fair Value Disclosure (126) (6,328)  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Preferred stock 0 0  
Fair Value, Inputs, Level 3 [Member]
      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Interest Rate Derivative Assets, at Fair Value 0 0  
Preferred stock 250 250 1,000
Derivative Financial Instruments, Liabilities, Fair Value Disclosure 0 0  
Assets, Fair Value Disclosure 250 250  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Preferred stock 250 250 1,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3   (750)  
Gain (Loss) on Investments $ 0 $ 0