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Net Income (Loss) per Common Share (Schedule of Weighted Average Shares Outstanding) (Details) - shares
3 Months Ended 9 Months Ended
Jun. 25, 2019
Jun. 26, 2018
Jun. 25, 2019
Jun. 26, 2018
Earnings Per Share [Abstract]        
Weighted-average shares outstanding-basic 12,522,778 12,468,326 12,516,822 12,460,467
Effect of potentially dilutive securities        
Stock options 15,101 102,506 0 0
Restricted stock units 185,444 94,340 0 0
Weighted-average shares outstanding-diluted 12,723,323 12,665,172 12,516,822 12,460,467
Excluded from diluted weighted-average shares outstanding:        
Antidilutive 654,468 272,348 891,172 747,796