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CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
CONSOLIDATED STATEMENTS OF OPERATIONS      
Income from discontinued operations, income tax benefit $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation $ 10,806us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation $ 663us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation