Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Statement of Comprehensive Income [Abstract]
Net sales	$ 319,875	$ 324,575	$ 516,464	$ 533,559
Cost of sales	247,862	242,380	410,036	406,610
Gross profit	72,013	82,195	106,428	126,949
Selling, general and administrative expenses	60,266	62,803	119,262	119,638
Manufacturing restructuring costs	0	0	(331)	0
Income from operations	11,747	19,392	(12,503)	7,311
Interest expense, net	20,759	20,391	41,079	39,232
Foreign currency loss (gain)	278	178	616	431
Income (loss) before income taxes	(9,290)	(1,177)	(54,198)	(32,352)
Income tax expense	1,318	1,962	2,759	2,131
Net income (loss)	(10,608)	(3,139)	(56,957)	(34,483)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	5	152	8	305
Foreign currency translation adjustments, net of tax	10,211	(9,729)	1,157	(15,272)
Total comprehensive income (loss)	$ (392)	$ (12,716)	$ (55,792)	$ (49,450)