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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Long-term Financial Liabilities [Abstract]    
Long-term Debt, Fair Value $ 130,057 $ 127,912
Carrying Amount [Member]
   
Long-term Financial Liabilities [Abstract]    
Long-term Debt, Fair Value $ 107,769 $ 108,257