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Note 7 - Intangible Assets (Details Textual) - USD ($)
 12 Months Ended
Oct. 01, 2016
Oct. 03, 2015
Sep. 27, 2014
Amortization of Intangible Assets $ 1,200,000 $ 1,100,000 $ 438,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 1,100,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 918,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 705,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 537,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 414,000