Consolidated Statements of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 30, 2011
Net sales	$ 196,431	$ 227,835	$ 229,861	$ 172,545	$ 195,492	$ 219,173	$ 223,792	$ 198,683	$ 826,672	$ 837,140	$ 933,678
Costs and expenses:
Cost of goods sold (excluding depreciation and amortization)	171,539	188,792	190,461	149,170	166,788	182,557	185,135	166,565	699,962	701,045	785,165
Selling and general (excluding depreciation and amortization)									75,428	83,492	91,421
Depreciation and amortization	9,542	8,514	8,450	8,593	8,846	8,624	8,633	8,681	35,099	34,784	37,194
Other operating charges									9,165	6,425	8,404
Multiemployer pension withdrawal									0	39	1,200
Income (loss) from operations	(4,121)	8,687	9,884	(7,432)	(3,034)	6,610	8,065	(286)	7,018	11,355	10,294
Interest expense									(54,078)	(54,858)	(55,579)
Other income (loss), net									7,404	5,012	(14,117)
Loss before income taxes	(13,599)	3,177	(1,859)	(27,375)	(12,764)	(3,290)	(14,659)	(7,778)	(39,656)	(38,491)	(59,402)
Provision (benefit) for income taxes									(14,761)	(1,723)	3,315
Net loss	$ (11,482)	$ 16,259	$ (1,556)	$ (28,116)	$ (11,881)	$ (1,175)	$ (15,592)	$ (8,120)	$ (24,895)	$ (36,768)	$ (62,717)