Supplemental Guarantor Condensed Financial Information - Consolidated Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 227,835	$ 219,173	$ 630,241	$ 641,648
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	188,792	182,557	528,423	534,257
Selling and general (excluding depreciation and amortization)	20,387	20,503	59,767	64,423
Depreciation and amortization	8,514	8,624	25,557	25,938
Other operating charges	1,455	840	5,355	2,602
Multiemployer pension withdrawal expense	0	39	0	39
Income (loss) from operations	8,687	6,610	11,139	14,389
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	(13,805)	(13,394)	(41,257)	(40,791)
Intercompany (loss) income, net	0	0	0	0
Other income (loss), net	8,295	3,494	4,061	675
Loss before income taxes	3,177	(3,290)	(26,057)	(25,727)
Provision (benefit) for income taxes	(13,082)	(2,115)	(12,644)	(840)
Net loss	16,259	(1,175)	(13,413)	(24,887)
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
Selling and general (excluding depreciation and amortization)	325	150	513	447
Depreciation and amortization	0	0	0	0
Other operating charges	0	0	0	0
Multiemployer pension withdrawal expense		0		0
Income (loss) from operations	(325)	(150)	(513)	(447)
Equity in earnings of subsidiaries	16,584	(1,025)	(12,900)	(24,440)
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	16,259	(1,175)	(13,413)	(24,887)
Provision (benefit) for income taxes	0	0	0	0
Net loss	16,259	(1,175)	(13,413)	(24,887)
Subsidiary Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales	165,866	154,293	429,300	429,610
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	137,171	128,191	361,266	358,378
Selling and general (excluding depreciation and amortization)	13,686	13,487	40,416	42,921
Depreciation and amortization	5,579	5,595	16,712	16,679
Other operating charges	155	635	821	1,712
Multiemployer pension withdrawal expense		39		39
Income (loss) from operations	9,275	6,346	10,085	9,881
Equity in earnings of subsidiaries	(4,171)	(2,055)	(11,619)	(6,145)
Interest expense	(13,528)	(13,141)	(40,384)	(40,055)
Intercompany (loss) income, net	4,478	4,189	13,158	12,861
Other income (loss), net	8,313	3,492	4,891	(53)
Loss before income taxes	4,367	(1,169)	(23,869)	(23,511)
Provision (benefit) for income taxes	(12,217)	(144)	(10,969)	929
Net loss	16,584	(1,025)	(12,900)	(24,440)
Non-Guarantor
Condensed Financial Statements, Captions [Line Items]
Net sales	64,365	67,987	206,908	219,675
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	54,017	57,473	173,124	183,516
Selling and general (excluding depreciation and amortization)	6,376	6,866	18,838	21,055
Depreciation and amortization	2,935	3,029	8,845	9,259
Other operating charges	1,300	205	4,534	890
Multiemployer pension withdrawal expense		0		0
Income (loss) from operations	(263)	414	1,567	4,955
Equity in earnings of subsidiaries	0	0	0	0
Interest expense	(277)	(253)	(873)	(736)
Intercompany (loss) income, net	(4,478)	(4,189)	(13,158)	(12,861)
Other income (loss), net	(18)	2	(830)	728
Loss before income taxes	(5,036)	(4,026)	(13,294)	(7,914)
Provision (benefit) for income taxes	(865)	(1,971)	(1,675)	(1,769)
Net loss	(4,171)	(2,055)	(11,619)	(6,145)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales	(2,396)	(3,107)	(5,967)	(7,637)
Costs and Expense:
Cost of goods sold (excluding depreciation and amortization)	(2,396)	(3,107)	(5,967)	(7,637)
Selling 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	(12,413)	3,080	24,519	30,585
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	(12,413)	3,080	24,519	30,585
Provision (benefit) for income taxes	0	0	0	0
Net loss	$ (12,413)	$ 3,080	$ 24,519	$ 30,585