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DEFERRED CHARGES (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]      
Debt arrangement fees and other deferred financing charges $ 6,335 $ 14,860  
Accumulated amortization (2,271) (5,291)  
Deferred charges 4,064 9,569  
Amortization of deferred charges $ 1,900 $ 1,484 $ 1,494