Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ (12,589)	$ 4,387	$ (20,535)	$ 9,516
Foreign currency translation adjustment
Foreign currency translation losses	798	(1,035)	(140)	(1,611)
Pension and postretirement benefit liabilities:
Other comprehensive income arising during the period	(1,550)		(1,550)
Reclassification adjustment for unrecognized prior service costs and unrecognized loss included in net income (loss)	36	117	83	250
Total	(1,514)	117	(1,467)	250
Comprehensive income (loss)	$ (13,305)us-gaap_ComprehensiveIncomeNetOfTax	$ 3,469us-gaap_ComprehensiveIncomeNetOfTax	$ (22,142)us-gaap_ComprehensiveIncomeNetOfTax	$ 8,155us-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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount after tax and 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 after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, 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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Amount after tax, before reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement benefit plans.

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