Consolidated Statements of Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (2,140)us-gaap_NetIncomeLoss	$ 9,927us-gaap_NetIncomeLoss	$ 17,855us-gaap_NetIncomeLoss
Other comprehensive (loss) income:
Foreign currency translation adjustments	(11,893)	1,939	3,805
Retirement plans related adjustments	(26,163)	23,689	(8,328)
Unrealized (loss) gain on cash flow hedges	(281)	77	651
Other comprehensive (loss) income before tax	(38,337)	25,705	(3,872)
Income tax (benefit) expense	(955)	1,615	(496)
Other comprehensive (loss) income, net of tax	(37,382)	24,090	(3,376)
Total comprehensive (loss) income	$ (39,522)us-gaap_ComprehensiveIncomeNetOfTax	$ 34,017us-gaap_ComprehensiveIncomeNetOfTax	$ 14,479us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity.

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, on foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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