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Note 7 - Dana Claim (Details Textual)
9 Months Ended
Apr. 29, 2015
USD ($)
Aug. 07, 2007
USD ($)
Sep. 28, 2014
USD ($)
Mar. 03, 2006
Fair Value [Member]        
Litigation Settlement, Amount   $ 76,483,000    
Number of Subsidiaries of Client       40
Number of Supply Commitments Replaced   3    
Bankruptcy Claims, Amount of Claims Filed   $ 89,900,000    
Litigation Settlement, Amount $ 505,000 $ 89,900,000    
Deferred Revenue, Revenue Recognized     $ 6,493,000