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Note 10 (Details Textual)
 3 Months Ended
Dec. 24, 2016
USD ($)
Dec. 26, 2015
USD ($)
Number of Reportable Segments 3  
Amortization of Intangible Assets $ 1,108,000 $ 1,329,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 3,700,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 3,300,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 3,200,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 2,900,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 2,500,000  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 10 years 219 days  
Minimum [Member]    
Number of Reportable Segments 3  
Finite-Lived Intangible Asset, Useful Life 3 years  
Maximum [Member]    
Finite-Lived Intangible Asset, Useful Life 20 years