Restructuring and Other Transition Costs (Details Textuals) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 18, 2011	Jun. 19, 2010	Jun. 18, 2011	Jun. 19, 2010
Restructuring and Other Transition Cost (Textuals)
Restructuring and other transition cost before tax	$ 0	$ 2,736	$ 0	$ 4,234
Restructuring and other transition cost after tax	0	1,943	0	3,087
Restructuring and other transition cost per diluted share	$ 0	$ 0.04	$ 0	$ 0.06
Restructuring and other transition costs		425		1,406
Restructuring charges before tax		1,823		2,239
Restructuring charges after tax		1,337		1,632
Restructuring charges per diluted shares		$ 0.03		$ 0.03
Other transition cost		913		1,995
Other transition cost after tax		$ 686		$ 1,454