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Discontinued Operations (Details Textual) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Dec. 03, 2011
Sep. 03, 2011
Sep. 01, 2012
May 28, 2011
Mar. 01, 2011
Discontinued Operations (Textual) [Abstract]          
Sale of the assets, certain liabilities and certain other Company assets         $ 238.8
Estimated pre-closing working capital adjustment         27.0
Reduction in purchase price due to post-closing working capital adjustment       4.2  
Payment to settle agreed upon working capital adjustment 3.9        
Reduction in deferred tax liability   2.1      
Payable to arrow for transition services     1.3    
Other accrued liabilities     0.1    
Offset receivables for transition services     $ 1.2