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Comprehensive Income (Details 1) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Foreign currency translation adjustments $ (4,231)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax $ (2,894)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Pension liability, net of tax (14,865)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax (15,136)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Total accumulated other comprehensive loss $ (19,096)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax $ (18,030)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax