CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Income Statement [Abstract]
Net sales	$ 419,783	$ 435,595	$ 1,262,819	$ 1,307,793
Cost of sales	347,409	369,959	1,050,004	1,102,630
Selling, general and administrative expenses	45,394	48,094	136,559	148,183
Amortization of intangible assets	1,981	1,913	5,756	7,299
Restructuring and other charges	5,483	5,396	11,529	18,138
Operating income	19,516	10,233	58,971	31,543
Interest expense, net	25,095	26,001	76,001	80,540
Loss on early extinguishment of debt, net	0	1,280	559	27,778
Other income, net	(1,332)	(771)	(773)	(712)
Loss from continuing operations before income taxes	(4,247)	(16,277)	(16,816)	(76,063)
Income tax benefit	(685)	(2,247)	(1,720)	(4,408)
Loss from continuing operations	(3,562)	(14,030)	(15,096)	(71,655)
Income from discontinued operations, net of taxes	319	3,137	1,769	6,291
Net loss	(3,243)	(10,893)	(13,327)	(65,364)
Other comprehensive income (loss):
Changes in pension and other employee benefit accounts, net of taxes	1,433	480	4,117	1,440
Currency translation adjustment	(1,893)	(1,067)	(3,132)	(334)
Comprehensive loss	$ (3,703)	$ (11,480)	$ (12,342)	$ (64,258)
(Loss) income per share – basic:
Continuing operations per share - basic	$ (0.05)	$ (0.21)	$ (0.22)	$ (1.07)
Discontinued operations per share - basic	0.00	0.05	0.02	0.09
Net loss per share - basic	(0.05)	(0.16)	(0.20)	(0.98)
(Loss) income per share – diluted:
Continuing operations per share - diluted	(0.05)	(0.21)	(0.22)	(1.07)
Discontinued operations per share - diluted	0.00	0.05	0.02	0.09
Net loss per share - diluted	$ (0.05)	$ (0.16)	$ (0.20)	$ (0.98)
Weighted average shares outstanding:
Basic shares	67,874	67,296	67,817	66,709
Diluted shares	67,874	67,296	67,817	66,709