Supplemental Guarantor Condensed Financial Information - Consolidated Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2012	Jul. 01, 2011	Jun. 29, 2012	Jul. 01, 2011
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 223,792	$ 256,858	$ 422,475	$ 467,237
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	185,135	212,358	351,700	386,241
Sales and general (excluding depreciation and amortization)	21,039	23,738	43,920	47,768
Depreciation and amortization	8,633	9,509	17,314	18,746
Other operating charges	920	1,484	1,762	3,901
Multiemployer pension withdrawal expense	0	1,200	0	1,200
Income (loss) from operations	8,065	8,569	7,779	9,381
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	(13,861)	(13,619)	(27,397)	(28,752)
Intercompany (loss) income, net	0	0	0	0
Other income (loss), net	(8,863)	3,770	(2,819)	8,656
Loss before income taxes	(14,659)	(1,280)	(22,437)	(10,715)
Provision (benefit) for income taxes	933	846	1,275	(258)
Net loss	(15,592)	(2,126)	(23,712)	(10,457)
Parent
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0	0	0
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	0	0	0	0
Sales and general (excluding depreciation and amortization)	148	149	297	297
Depreciation and amortization	0	0	0	0
Other operating charges	0	0	0	0
Multiemployer pension withdrawal expense		0		0
Income (loss) from operations	(148)	(149)	(297)	(297)
Equity in earnings of subsidiaries	(15,444)	(1,977)	(23,415)	(10,160)
Interest expense	0	0	0	0
Intercompany (loss) income, net	0	0	0	0
Other income (loss), net	0	0	0	0
Loss before income taxes	(15,592)	(2,126)	(23,712)	(10,457)
Provision (benefit) for income taxes	0	0	0	0
Net loss	(15,592)	(2,126)	(23,712)	(10,457)
Subsidiary Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales	152,875	158,166	275,317	283,120
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	126,540	130,578	230,187	235,825
Sales and general (excluding depreciation and amortization)	14,516	15,216	29,434	30,453
Depreciation and amortization	5,532	5,724	11,084	11,416
Other operating charges	796	1,110	1,077	3,527
Multiemployer pension withdrawal expense		1,200		1,200
Income (loss) from operations	5,491	4,338	3,535	699
Equity in earnings of subsidiaries	(1,101)	(2,314)	(4,090)	3,084
Interest expense	(13,604)	(13,605)	(26,914)	(25,987)
Intercompany (loss) income, net	4,299	4,854	8,672	5,484
Other income (loss), net	(9,882)	4,813	(3,545)	6,303
Loss before income taxes	(14,797)	(1,914)	(22,342)	(10,417)
Provision (benefit) for income taxes	647	63	1,073	(257)
Net loss	(15,444)	(1,977)	(23,415)	(10,160)
Non-Guarantor
Condensed Financial Statements, Captions [Line Items]
Net sales	73,957	101,434	151,688	189,196
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	61,635	84,522	126,043	155,495
Sales and general (excluding depreciation and amortization)	6,375	8,373	14,189	17,018
Depreciation and amortization	3,101	3,785	6,230	7,330
Other operating charges	124	374	685	374
Multiemployer pension withdrawal expense		0		0
Income (loss) from operations	2,722	4,380	4,541	8,979
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	(257)	(14)	(483)	(2,765)
Intercompany (loss) income, net	(4,299)	(4,854)	(8,672)	(5,484)
Other income (loss), net	1,019	(1,043)	726	2,353
Loss before income taxes	(815)	(1,531)	(3,888)	3,083
Provision (benefit) for income taxes	286	783	202	(1)
Net loss	(1,101)	(2,314)	(4,090)	3,084
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales	(3,040)	(2,742)	(4,530)	(5,079)
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	(3,040)	(2,742)	(4,530)	(5,079)
Sales and general (excluding depreciation and amortization)	0	0	0	0
Depreciation and amortization	0	0	0	0
Other operating charges	0	0	0	0
Multiemployer pension withdrawal expense		0		0
Income (loss) from operations	0	0	0	0
Equity in earnings of subsidiaries	16,545	4,291	27,505	7,076
Interest expense	0	0	0	0
Intercompany (loss) income, net	0	0	0	0
Other income (loss), net	0	0	0	0
Loss before income taxes	16,545	4,291	27,505	7,076
Provision (benefit) for income taxes	0	0	0	0
Net loss	$ 16,545	$ 4,291	$ 27,505	$ 7,076