Schedule of Special Charges, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Restructuring and plant realignment costs
Total restructuring and plant realignment costs	$ 188	$ 1,747
Other special charges
Total special charges, net	1,804	2,419
Special Charges Net
Restructuring and plant realignment costs
Internal redesign and restructure of global operations	1,543	747
Plant realignment costs	96	673
IS support initiative	7	277
Other restructure initiatives	0	50
Total restructuring and plant realignment costs	1,646	1,747
Acquisition and merger related costs
Blackstone acquisition costs	0	361
Total acquisition and merger related costs	0	361
Other special charges
Other charges	158	311
Total other special charges	158	311
Total special charges, net	$ 1,804	$ 2,419