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Stock-Based Compensation (Summary of Stock Option Activity under Share Based Compensation Plan) (Details) - $ / shares
9 Months Ended
Jun. 27, 2017
Jun. 30, 2016
Shares    
Outstanding-beginning of year 586,083  
Options granted 151,834  
Options exercised 0 19,531
Forfeited (3,132)  
Expired (15,217)  
Outstanding June 27, 2017 719,568  
Exercisable June 27, 2017 437,507  
Weighted Average Exercise Price    
Outstanding-beginning of year $ 4.99  
Options granted 3.13  
Forfeited 7.66  
Expired 19.14  
Outstanding June 27, 2017 4.29  
Exercisable June 27, 2017 $ 4.10  
Weighted Average Remaining Contractual Life (Yrs.)    
Outstanding June 27, 2017 7 years 1 month 6 days  
Exercisable June 27, 2017 5 years 10 months 25 days