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INCOME TAXES (Schedule of Reconciliation of Net Deferred Tax Liabilities to Financial Instrument) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Components of Deferred Tax Assets and Liabilities [Abstract]    
Deferred income tax asset per balance sheet $ 8,153us-gaap_DeferredTaxAssetsNetCurrent $ 6,876us-gaap_DeferredTaxAssetsNetCurrent
Deferred income tax liability per balance sheet (49,109)us-gaap_DeferredTaxLiabilitiesNoncurrent (43,457)us-gaap_DeferredTaxLiabilitiesNoncurrent
Net deferred tax liabilities $ (40,956)us-gaap_DeferredTaxAssetsLiabilitiesNet $ (36,581)us-gaap_DeferredTaxAssetsLiabilitiesNet