CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Income Statement [Abstract]
Net sales	$ 374,506	$ 432,761
Cost of sales	310,372	361,911
Selling, general and administrative expenses	44,541	47,239
Amortization of intangible assets	1,379	1,607
Restructuring and other charges	8,180	4,990
Operating income	10,034	17,014
Interest expense, net	19,147	24,095
Loss (gain) on early extinguishment of debt, net	45	(21,613)
Other (income) expense, net	(227)	554
(Loss) income from continuing operations before income taxes	(8,931)	13,978
Income tax (benefit) expense	(239)	958
(Loss) income from continuing operations	(8,692)	13,020
Loss from discontinued operations, net of taxes	0	(1,817)
Net (loss) income	(8,692)	11,203
Other comprehensive income:
Changes in pension and other employee benefit accounts, net of taxes	1,594	2,480
Currency translation adjustment, net	453	1,742
Total other comprehensive income	2,047	4,222
Comprehensive (loss) income	$ (6,645)	$ 15,425
(Loss) income per share – basic:
Continuing operations per share - basic	$ (1.02)	$ 1.53
Discontinued operations per share - basic	0.00	(0.21)
Net income (loss) per share - basic	(1.02)	1.32
(Loss) income per share – diluted:
Continuing operations per share - diluted	(1.02)	1.38
Discontinued operations per share - diluted	0.00	(0.18)
Net income (loss) per share - diluted	$ (1.02)	$ 1.20
Weighted average shares outstanding:
Basic shares	8,553	8,484
Diluted shares	8,553	10,366