Long-Term Debt (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Feb. 25, 2011	Jan. 01, 2012	Jan. 02, 2011	Jan. 03, 2010	Jul. 03, 2011
Long-Term Debt and Capital Leases (Textual) [Abstract]
Long term debt outstanding		$ 298.0	$ 250.0
Maximum capacity under credit facility					590.0
Credit agreement provides for facility fees Minimum	0.20%
Credit agreement provides for facility fees Maximum	0.45%
Total capital leases		14.8
Capital leases, current		1.4
Refinanced existing credit facility	590.0
New facility termination date		July 14, 2011	February 25, 2016
Amount for lender commitments	550.0
No payments due until it matures excluding interest and fees		550.0
Total interest expense including credit facility fees and other bank charges		16.7	6.9	5.1
Available capacity under credit facility		550.0
Weight Average rate under credit facility		2.48%
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Letter of credit, outstanding		13.5
Uncommitted credit line permits extensions for standby letters of credit				5.0
Incremental line of credit for standby letters of credit				$ 2.0