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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]    
Foreign currency translation gain (loss), deferred income taxes $ 43us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax $ (42)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax