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Note 3 (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Jun. 24, 2017
Jun. 25, 2016
Jun. 24, 2017
Jun. 25, 2016
Depreciation $ 9,629,000 $ 8,765,000 $ 28,060,000 $ 25,526,000
Minimum [Member]        
Finite-Lived Intangible Asset, Useful Life     3 years  
Maximum [Member]        
Finite-Lived Intangible Asset, Useful Life     20 years