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GAIN ON ACQUISITION (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
GAIN ON ACQUISITION [Abstract]      
Gain on acquisition $ 0us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount $ 0us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount $ 11,678us-gaap_BusinessCombinationBargainPurchaseGainRecognizedAmount