Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 475,105	$ 490,119
Cost of sales	397,888	415,157
Selling, general and administrative expenses	52,261	55,494
Amortization of intangible assets	2,407	3,449
Restructuring and other charges	4,354	5,947
Operating income	18,195	10,072
Interest expense, net	25,692	27,910
Intercompany interest (income) expense	0	0
Loss on early extinguishment of debt, net	433	18
Other expense (income), net	(217)	(509)
Loss from continuing operations before income taxes	(7,713)	(17,347)
Income tax (benefit) expense	(66)	(560)
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	(7,647)	(16,787)
Equity in (loss) income of subsidiaries	0	0
Loss from continuing operations	(7,647)	(16,787)
(Loss) income from discontinued operations, net of taxes	(32)	953
Net loss	(7,679)	(15,834)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	0	0
Changes in pension and other employee benefit accounts, net of taxes	1,342	480
Currency translation adjustment	(1,330)	88
Comprehensive loss	(7,667)	(15,266)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0
Cost of sales	0	0
Selling, general and administrative expenses	0	0
Amortization of intangible assets	0	0
Restructuring and other charges	0	0
Operating income	0	0
Interest expense, net	0	0
Intercompany interest (income) expense	0	0
Loss on early extinguishment of debt, net	0	0
Other expense (income), net	0	0
Loss from continuing operations before income taxes	0	0
Income tax (benefit) expense	0	0
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	0	0
Equity in (loss) income of subsidiaries	(7,679)	(15,834)
Loss from continuing operations	(7,679)	(15,834)
(Loss) income from discontinued operations, net of taxes	0	0
Net loss	(7,679)	(15,834)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	12	568
Changes in pension and other employee benefit accounts, net of taxes	0	0
Currency translation adjustment	0	0
Comprehensive loss	(7,667)	(15,266)
Subsidiary Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	223,852	241,467
Cost of sales	190,863	210,725
Selling, general and administrative expenses	30,115	33,608
Amortization of intangible assets	152	185
Restructuring and other charges	3,447	3,931
Operating income	(725)	(6,982)
Interest expense, net	25,592	27,823
Intercompany interest (income) expense	(274)	(270)
Loss on early extinguishment of debt, net	433	18
Other expense (income), net	294	(183)
Loss from continuing operations before income taxes	(26,770)	(34,370)
Income tax (benefit) expense	(321)	(391)
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	(26,449)	(33,979)
Equity in (loss) income of subsidiaries	18,771	18,072
Loss from continuing operations	(7,678)	(15,907)
(Loss) income from discontinued operations, net of taxes	(1)	73
Net loss	(7,679)	(15,834)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	(1,330)	88
Changes in pension and other employee benefit accounts, net of taxes	1,342	480
Currency translation adjustment	0	0
Comprehensive loss	(7,667)	(15,266)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	249,464	245,177
Cost of sales	206,492	201,544
Selling, general and administrative expenses	21,720	21,550
Amortization of intangible assets	2,144	3,131
Restructuring and other charges	907	2,016
Operating income	18,201	16,936
Interest expense, net	100	87
Intercompany interest (income) expense	274	270
Loss on early extinguishment of debt, net	0	0
Other expense (income), net	(539)	(325)
Loss from continuing operations before income taxes	18,366	16,904
Income tax (benefit) expense	143	(237)
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	18,223	17,141
Equity in (loss) income of subsidiaries	579	51
Loss from continuing operations	18,802	17,192
(Loss) income from discontinued operations, net of taxes	(31)	880
Net loss	18,771	18,072
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	353	619
Changes in pension and other employee benefit accounts, net of taxes	0	0
Currency translation adjustment	(1,683)	(531)
Comprehensive loss	17,441	18,160
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	1,789	3,475
Cost of sales	533	2,888
Selling, general and administrative expenses	426	336
Amortization of intangible assets	111	133
Restructuring and other charges	0	0
Operating income	719	118
Interest expense, net	0	0
Intercompany interest (income) expense	0	0
Loss on early extinguishment of debt, net	0	0
Other expense (income), net	28	(1)
Loss from continuing operations before income taxes	691	119
Income tax (benefit) expense	112	68
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	579	51
Equity in (loss) income of subsidiaries	0	0
Loss from continuing operations	579	51
(Loss) income from discontinued operations, net of taxes	0	0
Net loss	579	51
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	0	0
Changes in pension and other employee benefit accounts, net of taxes	0	0
Currency translation adjustment	353	619
Comprehensive loss	932	670
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0
Cost of sales	0	0
Selling, general and administrative expenses	0	0
Amortization of intangible assets	0	0
Restructuring and other charges	0	0
Operating income	0	0
Interest expense, net	0	0
Intercompany interest (income) expense	0	0
Loss on early extinguishment of debt, net	0	0
Other expense (income), net	0	0
Loss from continuing operations before income taxes	0	0
Income tax (benefit) expense	0	0
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	0	0
Equity in (loss) income of subsidiaries	(11,671)	(2,289)
Loss from continuing operations	(11,671)	(2,289)
(Loss) income from discontinued operations, net of taxes	0	0
Net loss	(11,671)	(2,289)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	965	(1,275)
Changes in pension and other employee benefit accounts, net of taxes	0	0
Currency translation adjustment	0	0
Comprehensive loss	$ (10,706)	$ (3,564)