Segment Information (Schedule of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2017	Apr. 01, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Segment Information [Line Items]
Net sales	$ 329,511	$ 353,817	$ 382,675	$ 1,010,850	$ 1,162,903
Operating income (loss)	(494)		20,159	22,587	51,911
Restructuring and other charges	10,025		2,326	20,040	8,196
Depreciation and intangible asset amortization	11,683		11,243	34,571	34,200
Intercompany sales	6,033		8,230	20,208	23,462
Assets of discontinued operations	66,618			66,618		$ 75,013
Total assets	870,017			870,017		912,959
Envelope [Member]
Segment Information [Line Items]
Net sales	156,478		183,198	483,941	554,331
Operating income (loss)	7,699		16,118	33,834	44,058
Restructuring and other charges	600		408	740	1,114
Depreciation and intangible asset amortization	4,423		4,271	13,034	12,954
Intercompany sales	860		1,840	3,651	5,217
Total assets	327,176			327,176		328,144
Print [Member]
Segment Information [Line Items]
Net sales	109,411		127,839	327,002	380,809
Operating income (loss)	(3,327)		5,446	(6,388)	10,756
Restructuring and other charges	6,613		477	14,779	1,319
Depreciation and intangible asset amortization	4,568		4,443	13,734	13,505
Intercompany sales	4,520		5,674	14,744	15,939
Total assets	227,516			227,516		256,888
Label [Member]
Segment Information [Line Items]
Net sales	63,622		71,638	199,907	227,763
Operating income (loss)	4,038		6,764	19,759	23,373
Restructuring and other charges	2,168		36	3,021	4,132
Depreciation and intangible asset amortization	1,759		1,572	5,211	5,360
Intercompany sales	653		716	1,813	2,306
Total assets	211,496			211,496		216,627
Corporate [Member]
Segment Information [Line Items]
Operating income (loss)	(8,904)		(8,169)	(24,618)	(26,276)
Restructuring and other charges	644		1,405	1,500	1,631
Depreciation and intangible asset amortization	933		$ 957	2,592	$ 2,381
Total assets	$ 37,211			$ 37,211		$ 36,287