Subsidiary Guarantors - (Statement of Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 27, 2014	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Condensed Financial Statements, Captions [Line Items]
Net sales		$ 1,186,973	$ 1,169,598	$ 1,142,521
Cost of sales		943,419	887,798	859,617
Gross profit		243,554	281,800	282,904
Selling, general and administrative expenses		247,283	232,281	240,027
Impairment of goodwill	148,500	144,159	0	0
Impairment of Intangible Assets (Excluding Goodwill)		89,687
Income (loss) from operations		(237,575)	49,519	42,877
Interest expense, net		82,527	79,751	75,520
Foreign currency loss (gain)		788	754	119
(Loss) income before income taxes		(320,890)	(30,986)	(32,762)
Income tax expense (benefit)		(27,201)	2,507	5,605
Income (loss) before equity loss from susidiaries		(293,689)	(33,493)	(38,367)
Equity (loss) income from subsidiaries		0	0	0
Net (loss) income		(293,689)	(33,493)	(38,367)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax		20,268	(19,774)	9,446
Foreign currency translation adjustments, net of tax		(22,439)	(20,443)	8,228
Total comprehensive income (loss)		(336,396)	(34,162)	(39,585)
Company
Condensed Financial Statements, Captions [Line Items]
Net sales		933,837	900,422	861,092
Cost of sales		758,858	687,015	649,672
Gross profit		174,979	213,407	211,420
Selling, general and administrative expenses		198,967	183,250	184,840
Impairment of goodwill		96,801
Impairment of Intangible Assets (Excluding Goodwill)		54,600
Income (loss) from operations		(175,389)	30,157	26,580
Interest expense, net		80,991	77,681	73,761
Foreign currency loss (gain)		0	0	0
(Loss) income before income taxes		(256,380)	(47,524)	(47,181)
Income tax expense (benefit)		(23,340)	(1,882)	(9,828)
Income (loss) before equity loss from susidiaries		(233,040)	(45,642)	(37,353)
Equity (loss) income from subsidiaries		(60,649)	12,149	(1,014)
Net (loss) income		(293,689)	(33,493)	(38,367)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax		20,268	(19,774)	9,446
Foreign currency translation adjustments, net of tax		(22,439)	(20,443)	8,228
Total comprehensive income (loss)		(336,396)	(34,162)	(39,585)
Co-Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales		0	0	0
Cost of sales		0	0	0
Gross profit		0	0	0
Selling, general and administrative expenses		0	0	0
Impairment of goodwill		0
Impairment of Intangible Assets (Excluding Goodwill)		0
Income (loss) from operations		0	0	0
Interest expense, net		0	0	0
Foreign currency loss (gain)		0	0	0
(Loss) income before income taxes		0	0	0
Income tax expense (benefit)		0	0	0
Income (loss) before equity loss from susidiaries		0	0	0
Equity (loss) income from subsidiaries		0	0	0
Net (loss) income		0	0	0
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax		0	0	0
Foreign currency translation adjustments, net of tax		0	0	0
Total comprehensive income (loss)		0	0	0
Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Net sales		155,953	166,302	169,610
Cost of sales		143,315	150,647	155,262
Gross profit		12,638	15,655	14,348
Selling, general and administrative expenses		4,678	5,281	9,922
Impairment of goodwill		8,850
Impairment of Intangible Assets (Excluding Goodwill)		11,721
Income (loss) from operations		(12,611)	10,374	4,426
Interest expense, net		0	0	0
Foreign currency loss (gain)		0	0	0
(Loss) income before income taxes		(12,611)	10,374	4,426
Income tax expense (benefit)		(587)	1,668	12,120
Income (loss) before equity loss from susidiaries		(12,024)	8,706	(7,694)
Equity (loss) income from subsidiaries		(48,625)	3,443	6,680
Net (loss) income		(60,649)	12,149	(1,014)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax		8,252	(9,666)	6,481
Foreign currency translation adjustments, net of tax		(22,439)	(20,443)	8,228
Total comprehensive income (loss)		(91,340)	1,372	733
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net sales		276,822	263,604	279,464
Cost of sales		220,885	210,866	222,328
Gross profit		55,937	52,738	57,136
Selling, general and administrative expenses		43,638	43,750	45,265
Impairment of goodwill		38,508
Impairment of Intangible Assets (Excluding Goodwill)		23,366
Income (loss) from operations		(49,575)	8,988	11,871
Interest expense, net		1,536	2,070	1,759
Foreign currency loss (gain)		788	754	119
(Loss) income before income taxes		(51,899)	6,164	9,993
Income tax expense (benefit)		(3,274)	2,721	3,313
Income (loss) before equity loss from susidiaries		(48,625)	3,443	6,680
Equity (loss) income from subsidiaries		0	0	0
Net (loss) income		(48,625)	3,443	6,680
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax		5,889	(7,594)	5,909
Foreign currency translation adjustments, net of tax		(22,439)	(20,443)	8,228
Total comprehensive income (loss)		(76,953)	(9,406)	8,999
Reclassification/Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales		(179,639)	(160,730)	(167,645)
Cost of sales		(179,639)	(160,730)	(167,645)
Gross profit		0	0	0
Selling, general and administrative expenses		0	0	0
Impairment of goodwill		0
Impairment of Intangible Assets (Excluding Goodwill)		0
Income (loss) from operations		0	0	0
Interest expense, net		0	0	0
Foreign currency loss (gain)		0	0	0
(Loss) income before income taxes		0	0	0
Income tax expense (benefit)		0	0	0
Income (loss) before equity loss from susidiaries		0	0	0
Equity (loss) income from subsidiaries		109,274	(15,592)	(5,666)
Net (loss) income		109,274	(15,592)	(5,666)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax		(14,141)	17,260	(12,390)
Foreign currency translation adjustments, net of tax		44,878	40,886	(16,456)
Total comprehensive income (loss)		$ 168,293	$ 8,034	$ (9,732)