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Fair Value Measurements (Details Textuals) (USD $)
In Millions
3 Months Ended 6 Months Ended
Jul. 03, 2010
Jul. 02, 2011
Jul. 03, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-lived assets, fair value $ 1.9 $ 1.3 $ 1.9
Fair value measurements (Textuals) [Abstract]      
Long-lived assets Carrying value 2.4 4.4 2.4
Impairment charges 0.5 3.1 0.5
Fair Value Level 2 [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-lived assets, fair value   1.1  
Fair Value Level 3 [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-lived assets, fair value   $ 0.2