CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
Income Statement [Abstract]
Net sales	$ 432,761	$ 429,677
Cost of sales	361,911	358,783
Selling, general and administrative expenses	47,239	47,157
Amortization of intangible assets	1,607	1,868
Restructuring and other charges	4,990	4,069
Operating income	17,014	17,800
Interest expense, net	24,095	25,659
(Gain) loss on early extinguishment of debt, net	(21,613)	433
Other expense, net	554	168
Income (loss) from continuing operations before income taxes	13,978	(8,460)
Income tax expense (benefit)	958	(281)
Income (loss) from continuing operations	13,020	(8,179)
(Loss) income from discontinued operations, net of taxes	(1,817)	500
Net income (loss)	11,203	(7,679)
Other comprehensive income (loss):
Changes in pension and other employee benefit accounts, net of taxes	2,480	1,342
Currency translation adjustment, net	1,742	(1,330)
Total other comprehensive income	4,222	12
Comprehensive income (loss)	$ 15,425	$ (7,667)
Income (loss) per share – basic:
Continuing operations per share - basic	$ 0.19	$ (0.12)
Discontinued operations per share - basic	(0.02)	0.01
Net income (loss) per share - basic	0.17	(0.11)
Income (loss) per share – diluted:
Continuing operations per share - diluted	0.17	(0.12)
Discontinued operations per share - diluted	(0.02)	0.01
Net income (loss) per share - diluted	$ 0.15	$ (0.11)
Weighted average shares outstanding:
Basic shares	67,874	67,746
Diluted shares	82,927	67,746