Supplemental Guarantor Condensed Financial Information - Consolidated Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 31, 2012	Dec. 30, 2011	Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 195,492	$ 219,173	$ 223,792	$ 198,683	$ 219,661	$ 246,780	$ 256,858	$ 210,379	$ 837,140	$ 933,678	$ 883,700
Cost of goods sold (excluding depreciation and amortization)	166,788	182,557	185,135	166,565	189,789	209,134	212,358	173,884	701,045	785,165	732,451
Sales and general (excluding depreciation and amortization)									83,492	91,421	90,642
Depreciation and amortization	8,846	8,624	8,633	8,681	9,130	9,318	9,509	9,237	34,784	37,194	38,700
Other operating charges									6,425	8,404	2,939
Multiemployer pension withdrawal expense									39	1,200	0
Income (loss) from operations	(3,034)	6,610	8,065	(286)	(2,863)	3,776	8,569	812	11,355	10,294	18,968
Equity in earnings of subsidiaries									0	0	0
Interest expense									(54,858)	(55,579)	(68,333)
Intercompany (loss) income, net									0	0	0
Other income (loss), net									5,012	(14,117)	(3,484)
Loss before income taxes	(12,764)	(3,290)	(14,659)	(7,778)	(21,525)	(27,162)	(1,280)	(9,435)	(38,491)	(59,402)	(52,849)
Provision (benefit) for income taxes									(1,723)	3,315	(14,461)
Income (Loss) from Continuing Operations Attributable to Parent									(36,768)	(62,717)	(38,388)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent									0	0	(152)
Net loss	(11,881)	(1,175)	(15,592)	(8,120)	(25,215)	(27,045)	(2,126)	(8,331)	(36,768)	(62,717)	(38,540)
Parent
Condensed Financial Statements, Captions [Line Items]
Net sales									0	0	0
Cost of goods sold (excluding depreciation and amortization)									0	0	0
Sales and general (excluding depreciation and amortization)									318	594	510
Depreciation and amortization									0	0	0
Other operating charges									0	0	0
Multiemployer pension withdrawal expense									0	0
Income (loss) from operations									(318)	(594)	(510)
Equity in earnings of subsidiaries									(36,450)	(62,123)	(38,030)
Interest expense									0	0	0
Intercompany (loss) income, net									0	0	0
Other income (loss), net									0	0	0
Loss before income taxes									(36,768)	(62,717)	(38,540)
Provision (benefit) for income taxes									0	0	0
Income (Loss) from Continuing Operations Attributable to Parent											(38,540)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0
Net loss									(36,768)	(62,717)	(38,540)
Subsidiary Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales									565,237	597,779	585,438
Cost of goods sold (excluding depreciation and amortization)									474,058	507,136	495,992
Sales and general (excluding depreciation and amortization)									55,752	58,191	58,639
Depreciation and amortization									22,403	22,859	24,462
Other operating charges									2,336	7,718	2,939
Multiemployer pension withdrawal expense									39	1,200
Income (loss) from operations									10,649	675	3,406
Equity in earnings of subsidiaries									(13,618)	(4,514)	(1,891)
Interest expense									(53,859)	(52,163)	(55,345)
Intercompany (loss) income, net									17,353	14,698	(296)
Other income (loss), net									4,960	(18,606)	624
Loss before income taxes									(34,515)	(59,910)	(53,502)
Provision (benefit) for income taxes									1,935	2,213	(15,624)
Income (Loss) from Continuing Operations Attributable to Parent											(37,878)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											(152)
Net loss									(36,450)	(62,123)	(38,030)
Non-Guarantor
Condensed Financial Statements, Captions [Line Items]
Net sales									281,912	347,811	312,158
Cost of goods sold (excluding depreciation and amortization)									236,996	289,941	250,355
Sales and general (excluding depreciation and amortization)									27,422	32,636	31,493
Depreciation and amortization									12,381	14,335	14,238
Other operating charges									4,089	686	0
Multiemployer pension withdrawal expense									0	0
Income (loss) from operations									1,024	10,213	16,072
Equity in earnings of subsidiaries									0	0	17
Interest expense									(999)	(3,416)	(12,988)
Intercompany (loss) income, net									(17,353)	(14,698)	296
Other income (loss), net									52	4,489	(4,108)
Loss before income taxes									(17,276)	(3,412)	(711)
Provision (benefit) for income taxes									(3,658)	1,102	1,163
Income (Loss) from Continuing Operations Attributable to Parent											(1,874)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0
Net loss									(13,618)	(4,514)	(1,874)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales									(10,009)	(11,912)	(13,896)
Cost of goods sold (excluding depreciation and amortization)									(10,009)	(11,912)	(13,896)
Sales and general (excluding depreciation and amortization)									0	0	0
Depreciation and amortization									0	0	0
Other operating charges									0	0	0
Multiemployer pension withdrawal expense									0	0
Income (loss) from operations									0	0	0
Equity in earnings of subsidiaries									50,068	66,637	39,904
Interest expense									0	0	0
Intercompany (loss) income, net									0	0	0
Other income (loss), net									0	0	0
Loss before income taxes									50,068	66,637	39,904
Provision (benefit) for income taxes									0	0	0
Income (Loss) from Continuing Operations Attributable to Parent											39,904
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0
Net loss									$ 50,068	$ 66,637	$ 39,904