Basis of Presentation (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 01, 2012	Jan. 03, 2012
Basis of Presentation [Abstract]
Date of completion of acquisition of business	Jan. 03, 2012
Total consideration of the acquisition	$ 346,440	$ 346,400
Date of completion of sale of business	May 06, 2011
Number of weeks in a quarter for financial reporting purposes	13- or 14-week quarter