Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 460,857	$ 479,410	$ 935,962	$ 969,529
Cost of sales	384,105	399,436	781,993	814,593
Selling, general and administrative expenses	49,037	55,840	101,298	111,334
Amortization of intangible assets	2,446	3,449	4,853	6,898
Restructuring and other charges	2,040	7,338	6,394	13,285
Operating income	23,229	13,347	41,424	23,419
Interest expense, net	25,278	26,666	50,970	54,576
Intercompany interest (income) expense	0	0	0	0
Loss on early extinguishment of debt, net	126	26,480	559	26,498
Other expense (income), net	347	212	130	(297)
Loss from continuing operations before income taxes	(2,522)	(40,011)	(10,235)	(57,358)
Income tax (benefit) expense	(103)	(710)	(169)	(1,270)
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	(2,419)	(39,301)	(10,066)	(56,088)
Equity in (loss) income of subsidiaries	0	0	0	0
Loss from continuing operations	(2,419)	(39,301)	(10,066)	(56,088)
Income (loss) from discontinued operations, net of taxes	14	664	(18)	1,617
Net loss	(2,405)	(38,637)	(10,084)	(54,471)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	0	0	0	0
Changes in pension and other employee benefit accounts, net of taxes	1,342	480	2,684	960
Currency translation adjustment	91	645	(1,239)	733
Comprehensive loss	(972)	(37,512)	(8,639)	(52,778)
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 and other charges	0	0	0	0
Operating income	0	0	0	0
Interest expense, net	0	0	0	0
Intercompany interest (income) expense	0	0	0	0
Loss on early extinguishment of debt, net	0	0	0	0
Other expense (income), net	0	0	0	0
Loss from continuing operations before income taxes	0	0	0	0
Income tax (benefit) expense	0	0	0	0
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	0	0	0	0
Equity in (loss) income of subsidiaries	(2,405)	(38,637)	(10,084)	(54,471)
Loss from continuing operations	(2,405)	(38,637)	(10,084)	(54,471)
Income (loss) from discontinued operations, net of taxes	0	0	0	0
Net loss	(2,405)	(38,637)	(10,084)	(54,471)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	1,433	1,125	1,445	1,693
Changes in pension and other employee benefit accounts, net of taxes	0	0	0	0
Currency translation adjustment	0	0	0	0
Comprehensive loss	(972)	(37,512)	(8,639)	(52,778)
Subsidiary Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	211,534	227,225	435,386	468,692
Cost of sales	183,257	194,081	374,120	404,806
Selling, general and administrative expenses	27,969	33,898	58,084	67,506
Amortization of intangible assets	152	185	304	370
Restructuring and other charges	1,520	6,517	4,967	10,448
Operating income	(1,364)	(7,456)	(2,089)	(14,438)
Interest expense, net	25,195	26,519	50,787	54,342
Intercompany interest (income) expense	(277)	(216)	(551)	(486)
Loss on early extinguishment of debt, net	126	26,480	559	26,498
Other expense (income), net	499	409	793	226
Loss from continuing operations before income taxes	(26,907)	(60,648)	(53,677)	(95,018)
Income tax (benefit) expense	(344)	(597)	(665)	(988)
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	(26,563)	(60,051)	(53,012)	(94,030)
Equity in (loss) income of subsidiaries	24,158	21,306	42,929	39,378
Loss from continuing operations	(2,405)	(38,745)	(10,083)	(54,652)
Income (loss) from discontinued operations, net of taxes	0	108	(1)	181
Net loss	(2,405)	(38,637)	(10,084)	(54,471)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	91	645	(1,239)	733
Changes in pension and other employee benefit accounts, net of taxes	1,342	480	2,684	960
Currency translation adjustment	0	0	0	0
Comprehensive loss	(972)	(37,512)	(8,639)	(52,778)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	247,863	249,377	497,327	494,554
Cost of sales	200,050	203,786	406,542	405,330
Selling, general and administrative expenses	20,585	21,601	42,305	43,151
Amortization of intangible assets	2,177	3,131	4,321	6,262
Restructuring and other charges	520	821	1,427	2,837
Operating income	24,531	20,038	42,732	36,974
Interest expense, net	83	147	183	234
Intercompany interest (income) expense	277	216	551	486
Loss on early extinguishment of debt, net	0	0	0	0
Other expense (income), net	(43)	(219)	(582)	(544)
Loss from continuing operations before income taxes	24,214	19,894	42,580	36,798
Income tax (benefit) expense	135	(252)	278	(489)
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	24,079	20,146	42,302	37,287
Equity in (loss) income of subsidiaries	65	604	644	655
Loss from continuing operations	24,144	20,750	42,946	37,942
Income (loss) from discontinued operations, net of taxes	14	556	(17)	1,436
Net loss	24,158	21,306	42,929	39,378
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	(371)	(37)	(18)	582
Changes in pension and other employee benefit accounts, net of taxes	0	0	0	0
Currency translation adjustment	462	682	(1,221)	151
Comprehensive loss	24,249	21,951	41,690	40,111
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	1,460	2,808	3,249	6,283
Cost of sales	798	1,569	1,331	4,457
Selling, general and administrative expenses	483	341	909	677
Amortization of intangible assets	117	133	228	266
Restructuring and other charges	0	0	0	0
Operating income	62	765	781	883
Interest expense, net	0	0	0	0
Intercompany interest (income) expense	0	0	0	0
Loss on early extinguishment of debt, net	0	0	0	0
Other expense (income), net	(109)	22	(81)	21
Loss from continuing operations before income taxes	171	743	862	862
Income tax (benefit) expense	106	139	218	207
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	65	604	644	655
Equity in (loss) income of subsidiaries	0	0	0	0
Loss from continuing operations	65	604	644	655
Income (loss) from discontinued operations, net of taxes	0	0	0	0
Net loss	65	604	644	655
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	0	0	0	0
Changes in pension and other employee benefit accounts, net of taxes	0	0	0	0
Currency translation adjustment	(371)	(37)	(18)	582
Comprehensive loss	(306)	567	626	1,237
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 and other charges	0	0	0	0
Operating income	0	0	0	0
Interest expense, net	0	0	0	0
Intercompany interest (income) expense	0	0	0	0
Loss on early extinguishment of debt, net	0	0	0	0
Other expense (income), net	0	0	0	0
Loss from continuing operations before income taxes	0	0	0	0
Income tax (benefit) expense	0	0	0	0
(Loss) income from continuing operations before equity in (loss) income of subsidiaries	0	0	0	0
Equity in (loss) income of subsidiaries	(21,818)	16,727	(33,489)	14,438
Loss from continuing operations	(21,818)	16,727	(33,489)	14,438
Income (loss) from discontinued operations, net of taxes	0	0	0	0
Net loss	(21,818)	16,727	(33,489)	14,438
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries	(1,153)	(1,733)	(188)	(3,008)
Changes in pension and other employee benefit accounts, net of taxes	0	0	0	0
Currency translation adjustment	0	0	0	0
Comprehensive loss	$ (22,971)	$ 14,994	$ (33,677)	$ 11,430