Acquisitions (Pro Forma Financial Information of National Envelope) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Business Acquisition [Line Items]
Net sales	$ 479,410	$ 406,540	$ 969,529	$ 825,154
Loss from continuing operations	(39,301)	(18,996)	(56,088)	(39,486)
Loss per share from continuing operations - basic	$ (0.59)	$ (0.30)	$ (0.84)	$ (0.62)
Loss per share from continuing operations - diluted	$ (0.59)	$ (0.30)	$ (0.84)	$ (0.62)
National Envelope Acquisition [Member]
Business Acquisition [Line Items]
Pro forma net sales		487,988		1,000,760
Pro forma loss from continuing operations		$ (32,275)		$ (63,417)
Pro forma loss per share from continuing operations - basic		$ (0.49)		$ (0.96)
Pro forma loss per share from continuing operations - diluted		$ (0.49)		$ (0.96)

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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