Segment Information (Schedule of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016
Segment Information [Line Items]
Net sales	$ 354,982	$ 381,913	$ 410,053	$ 736,895	$ 850,632
Operating income (loss)	11,358		21,570	21,392	38,584
Restructuring and other charges	4,416		880	12,596	5,870
Depreciation and intangible asset amortization	11,948		11,826	23,743	23,856
Intercompany sales	6,749		7,627	14,180	15,271
Total assets	869,402			869,402		$ 912,959
Envelope [Member]
Segment Information [Line Items]
Net sales	181,180		212,277	383,019	441,537
Operating income (loss)	9,995		17,213	24,446	34,772
Restructuring and other charges	1,512		191	2,721	706
Depreciation and intangible asset amortization	4,719		4,818	9,466	9,582
Intercompany sales	1,296		1,559	2,796	3,416
Total assets	389,376			389,376		403,157
Print [Member]
Segment Information [Line Items]
Net sales	105,946		120,665	217,591	252,970
Operating income (loss)	1,765		1,933	(3,061)	5,310
Restructuring and other charges	1,521		534	8,166	842
Depreciation and intangible asset amortization	4,559		4,807	9,166	9,062
Intercompany sales	4,958		5,450	10,224	10,265
Total assets	228,301			228,301		256,888
Label [Member]
Segment Information [Line Items]
Net sales	67,856		77,111	136,285	156,125
Operating income (loss)	6,319		11,901	15,721	16,609
Restructuring and other charges	1,250		(59)	853	4,096
Depreciation and intangible asset amortization	1,798		1,442	3,452	3,788
Intercompany sales	495		618	1,160	1,590
Total assets	211,837			211,837		216,627
Corporate [Member]
Segment Information [Line Items]
Operating income (loss)	(6,721)		(9,477)	(15,714)	(18,107)
Restructuring and other charges	133		214	856	226
Depreciation and intangible asset amortization	872		$ 759	1,659	$ 1,424
Total assets	$ 39,888			$ 39,888		$ 36,287