CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Statement [Abstract]
Net sales	$ 509,873	$ 442,781	$ 406,540	$ 418,614	$ 437,700	$ 437,168	$ 423,861	$ 439,564	$ 1,777,808	$ 1,738,293	$ 1,844,371
Cost of sales									1,485,931	1,417,147	1,498,202
Selling, general and administrative expenses									206,085	182,980	213,296
Amortization of intangible assets									9,962	9,881	9,899
Restructuring and other charges									13,100	27,100	17,812
Impairment of intangible assets	33,400								33,367	0	0
Operating income	(15,681)	16,524	16,842	11,678	31,650	32,282	25,967	11,286	29,363	101,185	105,162
Gain on bargain purchase									(17,262)	0	(11,720)
Interest expense, net									112,677	114,755	115,968
Loss (gain) on early extinguishment of debt, net									11,324	12,487	(4,011)
Other (income) expense, net									(5,602)	(1,249)	9,074
Loss from continuing operations before income taxes									(71,774)	(24,808)	(4,149)
Income tax expense									13,753	55,720	4,545
Loss from continuing operations	(59,468)	13,427	(18,996)	(20,490)	(57,389)	3,022	(1,790)	(24,371)	(85,527)	(80,528)	(8,694)
Income from discontinued operations, net of taxes	1,791	13,492	113	1,345	646	1,453	1,389	(2,847)	16,741	641	129
Net loss	(57,677)	26,919	(18,883)	(19,145)	(56,743)	4,475	(401)	(27,218)	(68,786)	(79,887)	(8,565)
Other comprehensive income (loss):
Pension liability adjustment, net of taxes									(31,430)	7,986	37,130
Reclassifications of losses related to interest rate swaps into earnings, net of taxes									0	0	1,793
Currency translation adjustment									(4,529)	665	(4,260)
Comprehensive loss									$ (41,885)	$ (87,208)	$ (48,162)
(Loss) income per share – basic:
Continuing operations per share - basic	$ (0.90)	$ 0.21	$ (0.30)	$ (0.32)	$ (0.90)	$ 0.05	$ (0.03)	$ (0.38)	$ (1.32)	$ (1.27)	$ (0.14)
Discontinued operations per share - basic	$ 0.03	$ 0.21	$ 0.00	$ 0.02	$ 0.01	$ 0.02	$ 0.02	$ (0.05)	$ 0.25	$ 0.01	$ 0.00
Net loss per share - basic	$ (0.87)	$ 0.42	$ (0.30)	$ (0.30)	$ (0.89)	$ 0.07	$ (0.01)	$ (0.43)	$ (1.07)	$ (1.26)	$ (0.14)
(Loss) income per share – diluted:
Continuing operations per share - diluted	$ (0.90)	$ 0.16	$ (0.30)	$ (0.32)	$ (0.90)	$ 0.05	$ (0.03)	$ (0.38)	$ (1.32)	$ (1.27)	$ (0.14)
Discontinued operations per share - diluted	$ 0.03	$ 0.16	$ 0.00	$ 0.02	$ 0.01	$ 0.02	$ 0.02	$ (0.05)	$ 0.25	$ 0.01	$ 0.00
Net loss per share - diluted	$ (0.87)	$ 0.32	$ (0.30)	$ (0.30)	$ (0.89)	$ 0.07	$ (0.01)	$ (0.43)	$ (1.07)	$ (1.26)	$ (0.14)
Weighted average shares outstanding:
Basic shares									64,576	63,567	62,983
Diluted shares									64,576	63,567	62,983