Condensed Consolidating Financial Information Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 442,781	$ 437,168	$ 1,267,935	$ 1,300,593
Cost of sales	367,356	353,780	1,056,392	1,063,119
Selling, general and administrative expenses	53,105	44,469	148,783	137,918
Amortization of intangible assets	2,459	2,447	7,473	7,455
Restructuring, impairment and other charges	3,337	4,190	10,243	22,566
Operating income/(loss)	16,524	32,282	45,044	69,535
Gain on bargain purchase	(12,435)	0	(12,435)	0
Interest expense, net	27,611	28,926	85,421	85,574
Intercompany interest expense/(income)	0	0	0	0
Loss on early extinguishment of debt, net	1,593	25	9,440	11,439
Other expense/(income), net	595	491	(1,400)	(327)
Income/(loss) from continuing operations before income taxes and equity in income/(loss) of subsidiaries	(840)	2,840	(35,982)	(27,151)
Income tax (benefit)/expense	(11,331)	(182)	(6,987)	(4,012)
Income/(loss) from continuing operations before equity in income/(loss) of subsidiaries	10,491	3,022	(28,995)	(23,139)
Equity in income/(loss) of subsidiaries	0	0	0	0
Income/(loss) from continuing operations	10,491	3,022	(28,995)	(23,139)
Income/(loss) from discontinued operations, net of taxes	13,492	1,453	14,950	(5)
Net income/(loss)	23,983	4,475	(14,045)	(23,144)
Other comprehensive income/(loss):
Other comprehensive income/(loss) of subsidiaries	0	0	0	0
Currency translation adjustment	(31)	2,412	(3,139)	1,654
Comprehensive (loss)/income	23,952	6,887	(17,184)	(21,490)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Amortization of intangible assets	0	0	0	0
Restructuring, impairment and other charges	0	0	0	0
Operating income/(loss)	0	0	0	0
Gain on bargain purchase	0		0
Interest expense, net	0	0	0	0
Intercompany interest expense/(income)	0	0	0	0
Loss on early extinguishment of debt, net	0	0	0	0
Other expense/(income), net	0	0	0	0
Income/(loss) from continuing operations before income taxes and equity in income/(loss) of subsidiaries	0	0	0	0
Income tax (benefit)/expense	0	0	0	0
Income/(loss) from continuing operations before equity in income/(loss) of subsidiaries	0	0	0	0
Equity in income/(loss) of subsidiaries	23,983	4,475	(14,045)	(23,144)
Income/(loss) from continuing operations	23,983	4,475	(14,045)	(23,144)
Income/(loss) from discontinued operations, net of taxes	0	0	0	0
Net income/(loss)	23,983	4,475	(14,045)	(23,144)
Other comprehensive income/(loss):
Other comprehensive income/(loss) of subsidiaries	(31)	2,412	(3,139)	1,654
Currency translation adjustment	0	0	0	0
Comprehensive (loss)/income	23,952	6,887	(17,184)	(21,490)
Subsidiary Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	187,592	165,588	516,022	507,767
Cost of sales	163,606	139,278	444,788	427,634
Selling, general and administrative expenses	30,172	24,236	83,814	76,760
Amortization of intangible assets	137	137	411	444
Restructuring, impairment and other charges	1,992	1,805	6,841	3,331
Operating income/(loss)	(8,315)	132	(19,832)	(402)
Gain on bargain purchase	(12,443)		(12,443)
Interest expense, net	27,482	28,784	85,080	85,118
Intercompany interest expense/(income)	(281)	(414)	(935)	(1,102)
Loss on early extinguishment of debt, net	1,593	25	9,440	11,439
Other expense/(income), net	768	375	1,646	(245)
Income/(loss) from continuing operations before income taxes and equity in income/(loss) of subsidiaries	(25,434)	(28,638)	(102,620)	(95,612)
Income tax (benefit)/expense	(5,435)	(2,717)	(2,724)	(7,680)
Income/(loss) from continuing operations before equity in income/(loss) of subsidiaries	(19,999)	(25,921)	(99,896)	(87,932)
Equity in income/(loss) of subsidiaries	37,380	28,990	76,670	58,186
Income/(loss) from continuing operations	17,381	3,069	(23,226)	(29,746)
Income/(loss) from discontinued operations, net of taxes	6,602	1,406	9,181	6,602
Net income/(loss)	23,983	4,475	(14,045)	(23,144)
Other comprehensive income/(loss):
Other comprehensive income/(loss) of subsidiaries	(31)	2,412	(3,139)	1,654
Currency translation adjustment	0	0	0	0
Comprehensive (loss)/income	23,952	6,887	(17,184)	(21,490)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	251,212	267,428	741,124	780,951
Cost of sales	200,099	211,062	601,643	625,104
Selling, general and administrative expenses	22,704	20,043	64,318	60,567
Amortization of intangible assets	2,189	2,176	6,664	6,609
Restructuring, impairment and other charges	1,344	2,383	3,388	19,139
Operating income/(loss)	24,876	31,764	65,111	69,532
Gain on bargain purchase	8		8
Interest expense, net	122	148	341	469
Intercompany interest expense/(income)	281	391	935	1,030
Loss on early extinguishment of debt, net	0	0	0	0
Other expense/(income), net	(84)	(3)	(2,783)	23
Income/(loss) from continuing operations before income taxes and equity in income/(loss) of subsidiaries	24,549	31,228	66,610	68,010
Income tax (benefit)/expense	(5,932)	1,768	(4,324)	2,940
Income/(loss) from continuing operations before equity in income/(loss) of subsidiaries	30,481	29,460	70,934	65,070
Equity in income/(loss) of subsidiaries	9	(517)	(33)	(277)
Income/(loss) from continuing operations	30,490	28,943	70,901	64,793
Income/(loss) from discontinued operations, net of taxes	6,890	47	5,769	(6,607)
Net income/(loss)	37,380	28,990	76,670	58,186
Other comprehensive income/(loss):
Other comprehensive income/(loss) of subsidiaries	(1,073)	1,244	(2,992)	179
Currency translation adjustment	1,042	1,168	(147)	1,475
Comprehensive (loss)/income	37,349	31,402	73,531	59,840
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	3,977	4,152	10,789	11,875
Cost of sales	3,651	3,440	9,961	10,381
Selling, general and administrative expenses	229	190	651	591
Amortization of intangible assets	133	134	398	402
Restructuring, impairment and other charges	1	2	14	96
Operating income/(loss)	(37)	386	(235)	405
Gain on bargain purchase	0		0
Interest expense, net	7	(6)	0	(13)
Intercompany interest expense/(income)	0	23	0	72
Loss on early extinguishment of debt, net	0	0	0	0
Other expense/(income), net	(89)	119	(263)	(105)
Income/(loss) from continuing operations before income taxes and equity in income/(loss) of subsidiaries	45	250	28	451
Income tax (benefit)/expense	36	767	61	728
Income/(loss) from continuing operations before equity in income/(loss) of subsidiaries	9	(517)	(33)	(277)
Equity in income/(loss) of subsidiaries	0	0	0	0
Income/(loss) from continuing operations	9	(517)	(33)	(277)
Income/(loss) from discontinued operations, net of taxes	0	0	0	0
Net income/(loss)	9	(517)	(33)	(277)
Other comprehensive income/(loss):
Other comprehensive income/(loss) of subsidiaries	0	0	0	0
Currency translation adjustment	(1,073)	1,244	(2,992)	179
Comprehensive (loss)/income	(1,064)	727	(3,025)	(98)
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Amortization of intangible assets	0	0	0	0
Restructuring, impairment and other charges	0	0	0	0
Operating income/(loss)	0	0	0	0
Gain on bargain purchase	0		0
Interest expense, net	0	0	0	0
Intercompany interest expense/(income)	0	0	0	0
Loss on early extinguishment of debt, net	0	0	0	0
Other expense/(income), net	0	0	0	0
Income/(loss) from continuing operations before income taxes and equity in income/(loss) of subsidiaries	0	0	0	0
Income tax (benefit)/expense	0	0	0	0
Income/(loss) from continuing operations before equity in income/(loss) of subsidiaries	0	0	0	0
Equity in income/(loss) of subsidiaries	(61,372)	(32,948)	(62,592)	(34,765)
Income/(loss) from continuing operations	(61,372)	(32,948)	(62,592)	(34,765)
Income/(loss) from discontinued operations, net of taxes	0	0	0	0
Net income/(loss)	(61,372)	(32,948)	(62,592)	(34,765)
Other comprehensive income/(loss):
Other comprehensive income/(loss) of subsidiaries	1,135	(6,068)	9,270	(3,487)
Currency translation adjustment	0	0	0	0
Comprehensive (loss)/income	$ (60,237)	$ (39,016)	$ (53,322)	$ (38,252)