Acquisitions (Purchase Price Allocation of National Envelope) (Details) - Sep. 16, 2013 - National Envelope Acquisition [Member] - USD ($) $ in Thousands	Total
Business Acquisition [Line Items]
Property, plant and equipment	$ 53,108
Other intangible assets	4,430
Total assets acquired	57,538
Accounts payable	1,015
Accrued compensation and related liabilities	1,210
Other current liabilities	1,453
Note payable	2,536
Total liabilities assumed	6,214
Net assets acquired	51,324
Cost of the acquisition of certain assets of National	34,062
Gain on bargain purchase	$ 17,262