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Lease Commitments (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 01, 2012
Jan. 02, 2011
Jan. 03, 2010
Lease Commitments (Textual) [Abstract]      
Present value of minimum capital lease payments, net of current portion $ 13.4    
Property leased under capital leases 15.8 17.0  
Accumulated Depreciation 3.2 2.2  
Rental expense, net of sublease income $ 24.1 $ 21.5 $ 20.5