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GAIN ON SALE OF ASSETS 4 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Loss (gain) on disposal      
Gain on sale of assets $ (4,430) $ 0 $ (35,310)
Interest expense $ 2,208 $ 4,130 $ 7,028