Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 490,119	$ 418,614
Cost of sales	415,157	351,902
Selling, general and administrative expenses	55,494	48,345
Amortization of intangible assets	3,449	2,507
Restructuring and other charges	5,947	4,182
Operating income	10,072	11,678
Interest expense, net	27,910	29,575
Intercompany interest (income) expense	0	0
Loss on early extinguishment of debt, net	18	127
Other (income) expense, net	(509)	296
Loss from continuing operations before income taxes	(17,347)	(18,320)
Income tax (benefit) expense	(560)	2,170
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	(16,787)	(20,490)
Equity in (loss) income of subsidiaries	0	0
Loss from continuing operations	(16,787)	(20,490)
Income from discontinued operations, net of taxes	953	1,345
Net loss	(15,834)	(19,145)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	0	0
Changes in pension and other employee benefit accounts, net of taxes	480	0
Currency translation adjustment	88	(779)
Comprehensive loss	(15,266)	(19,924)
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 (income) expense, 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	(15,834)	(19,145)
Loss from continuing operations	(15,834)	(19,145)
Income from discontinued operations, net of taxes	0	0
Net loss	(15,834)	(19,145)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	568	(779)
Changes in pension and other employee benefit accounts, net of taxes	0
Currency translation adjustment	0	0
Comprehensive loss	(15,266)	(19,924)
Subsidiary Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	241,467	167,704
Cost of sales	210,725	144,152
Selling, general and administrative expenses	33,608	26,981
Amortization of intangible assets	185	137
Restructuring and other charges	3,931	2,834
Operating income	(6,982)	(6,400)
Interest expense, net	27,823	29,464
Intercompany interest (income) expense	(270)	(350)
Loss on early extinguishment of debt, net	18	127
Other (income) expense, net	(183)	369
Loss from continuing operations before income taxes	(34,370)	(36,010)
Income tax (benefit) expense	(391)	1,646
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	(33,979)	(37,656)
Equity in (loss) income of subsidiaries	18,072	17,167
Loss from continuing operations	(15,907)	(20,489)
Income from discontinued operations, net of taxes	73	1,344
Net loss	(15,834)	(19,145)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	88	(779)
Changes in pension and other employee benefit accounts, net of taxes	480
Currency translation adjustment	0	0
Comprehensive loss	(15,266)	(19,924)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	245,177	247,349
Cost of sales	201,544	204,698
Selling, general and administrative expenses	21,550	21,143
Amortization of intangible assets	3,131	2,238
Restructuring and other charges	2,016	1,344
Operating income	16,936	17,926
Interest expense, net	87	114
Intercompany interest (income) expense	270	350
Loss on early extinguishment of debt, net	0	0
Other (income) expense, net	(325)	(95)
Loss from continuing operations before income taxes	16,904	17,557
Income tax (benefit) expense	(237)	461
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	17,141	17,096
Equity in (loss) income of subsidiaries	51	70
Loss from continuing operations	17,192	17,166
Income from discontinued operations, net of taxes	880	1
Net loss	18,072	17,167
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	619	114
Changes in pension and other employee benefit accounts, net of taxes	0
Currency translation adjustment	(531)	(893)
Comprehensive loss	18,160	16,388
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	3,475	3,561
Cost of sales	2,888	3,052
Selling, general and administrative expenses	336	221
Amortization of intangible assets	133	132
Restructuring and other charges	0	4
Operating income	118	152
Interest expense, net	0	(3)
Intercompany interest (income) expense	0	0
Loss on early extinguishment of debt, net	0	0
Other (income) expense, net	(1)	22
Loss from continuing operations before income taxes	119	133
Income tax (benefit) expense	68	63
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	51	70
Equity in (loss) income of subsidiaries	0	0
Loss from continuing operations	51	70
Income from discontinued operations, net of taxes	0	0
Net loss	51	70
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	0	0
Changes in pension and other employee benefit accounts, net of taxes	0
Currency translation adjustment	619	114
Comprehensive loss	670	184
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 (income) expense, 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	(2,289)	1,908
Loss from continuing operations	(2,289)	1,908
Income from discontinued operations, net of taxes	0	0
Net loss	(2,289)	1,908
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	(1,275)	1,444
Changes in pension and other employee benefit accounts, net of taxes	0
Currency translation adjustment	0	0
Comprehensive loss	$ (3,564)	$ 3,352