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Stock-Based Compensation (Summary of Non-vested Restricted Stock Activity) (Details) - Restricted Stock [Member] - $ / shares
6 Months Ended
Mar. 31, 2020
Mar. 26, 2019
Shares    
Non-vested shares at beginning of year 165,275  
Granted 60,336 79,988
Forfeited (8,992)  
Vested (100,499)  
Non-vested shares at March 31, 2020 116,120  
Grant Date Fair Value Per Share    
Granted   $ 3.95
Minimum [Member]    
Grant Date Fair Value Per Share    
Non-vested shares at beginning of year $ 2.70  
Granted 1.54  
Forfeited 3.55  
Vested 1.67  
Non-vested shares at March 31, 2020 2.70  
Maximum [Member]    
Grant Date Fair Value Per Share    
Non-vested shares at beginning of year 3.95  
Granted 1.67  
Forfeited 3.95  
Vested 4.18  
Non-vested shares at March 31, 2020 $ 4.18