Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net sales	$ 203,754	$ 210,834
Cost of sales	157,499	162,596
Gross profit	46,255	48,238
Selling, general and administrative expenses	31,750	30,356
Operating (loss) income	14,505	17,882
Other expense
Interest expense	12,320	14,961
Foreign exchange loss (gain)	117	711
(Loss) income before income taxes	2,068	2,210
Provision (benefit) for income taxes	57	67
Net (loss) income	2,011	2,143
Other comprehensive (loss) income
Changes in retiree plans	(179)	(397)
Realized and unrealized gains (losses) on derivatives	(532)	1,294
Total other comprehensive income (loss)	(711)	897
Comprehensive (loss) income	$ 1,300	$ 3,040