Supplemental Guarantor Condensed Financial Information - Consolidated Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 219,173	$ 246,780	$ 641,648	$ 714,017
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	182,557	209,135	534,257	595,376
Sales and general (excluding depreciation and amortization)	20,503	23,130	64,423	70,898
Depreciation and amortization	8,624	9,318	25,938	28,064
Other operating charges	840	1,421	2,602	5,322
Multiemployer pension withdrawal expense	39	0	39	1,200
Income (loss) from operations	6,610	3,776	14,389	13,157
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	(13,394)	(13,370)	(40,791)	(42,122)
Intercompany (loss) income, net	0	0	0	0
Other income (loss), net	3,494	(17,568)	675	(8,912)
Loss before income taxes	(3,290)	(27,162)	(25,727)	(37,877)
Provision (benefit) for income taxes	(2,115)	(117)	(840)	(375)
Net loss	(1,175)	(27,045)	(24,887)	(37,502)
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)	150	148	447	445
Depreciation and amortization	0	0	0	0
Other operating charges	0	0	0	0
Multiemployer pension withdrawal expense	0		0	0
Income (loss) from operations	(150)	(148)	(447)	(445)
Equity in earnings of subsidiaries	(1,025)	(26,897)	(24,440)	(37,057)
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	(1,175)	(27,045)	(24,887)	(37,502)
Provision (benefit) for income taxes	0	0	0	0
Net loss	(1,175)	(27,045)	(24,887)	(37,502)
Subsidiary Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales	154,293	167,465	429,610	450,585
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	128,191	143,049	358,378	378,874
Sales and general (excluding depreciation and amortization)	13,487	15,230	42,921	45,683
Depreciation and amortization	5,595	5,693	16,679	17,109
Other operating charges	635	1,380	1,712	4,907
Multiemployer pension withdrawal expense	39		39	1,200
Income (loss) from operations	6,346	2,113	9,881	2,812
Equity in earnings of subsidiaries	(2,055)	(1,397)	(6,145)	1,687
Interest expense	(13,141)	(13,357)	(40,055)	(39,344)
Intercompany (loss) income, net	4,189	4,688	12,861	10,172
Other income (loss), net	3,492	(18,881)	(53)	(12,578)
Loss before income taxes	(1,169)	(26,834)	(23,511)	(37,251)
Provision (benefit) for income taxes	(144)	63	929	(194)
Net loss	(1,025)	(26,897)	(24,440)	(37,057)
Non-Guarantor
Condensed Financial Statements, Captions [Line Items]
Net sales	67,987	84,157	219,675	273,353
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	57,473	70,928	183,516	226,423
Sales and general (excluding depreciation and amortization)	6,866	7,752	21,055	24,770
Depreciation and amortization	3,029	3,625	9,259	10,955
Other operating charges	205	41	890	415
Multiemployer pension withdrawal expense	0		0	0
Income (loss) from operations	414	1,811	4,955	10,790
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	(253)	(13)	(736)	(2,778)
Intercompany (loss) income, net	(4,189)	(4,688)	(12,861)	(10,172)
Other income (loss), net	2	1,313	728	3,666
Loss before income taxes	(4,026)	(1,577)	(7,914)	1,506
Provision (benefit) for income taxes	(1,971)	(180)	(1,769)	(181)
Net loss	(2,055)	(1,397)	(6,145)	1,687
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales	(3,107)	(4,842)	(7,637)	(9,921)
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	(3,107)	(4,842)	(7,637)	(9,921)
Sales and general (excluding depreciation and amortization)	0	0	0	0
Depreciation and amortization	0		0	0
Other operating charges	0	0	0	0
Multiemployer pension withdrawal expense	0		0	0
Income (loss) from operations	0	0	0	0
Equity in earnings of subsidiaries	3,080	28,294	30,585	35,370
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	3,080	28,294	30,585	35,370
Provision (benefit) for income taxes	0	0	0	0
Net loss	$ 3,080	$ 28,294	$ 30,585	$ 35,370