Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Statement of Other Comprehensive Income [Abstract]
Net sales	$ 314,391	$ 310,459	$ 527,345	$ 507,195
Cost of sales	233,685	230,119	405,545	386,776
Gross profit	80,706	80,340	121,800	120,419
Selling, general and administrative expenses	59,542	65,624	119,012	124,540
Income (loss) from operations	21,164	14,716	2,788	(4,121)
Interest expense, net	18,925	19,095	37,612	37,795
Foreign currency loss	199	124	237	94
Income (loss) before income taxes	2,040	(4,503)	(35,061)	(42,010)
Income tax expense	1,667	2,690	2,436	2,301
Net income (loss)	373	(7,193)	(37,497)	(44,311)
Other comprehensive income (loss):
Unrecognized actuarial losses and prior service costs, net of tax	24	0	24	0
Foreign currency translation adjustments, net of tax	(6,513)	2,425	1,441	15,389
Total comprehensive income (loss)	$ (6,116)	$ (4,768)	$ (36,032)	$ (28,922)