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Stockholders' Equity and Stock Compensation Plans - Restricted Stock (Details) - Restricted Stock - $ / shares
12 Months Ended
Oct. 01, 2017
Oct. 02, 2016
Sep. 27, 2015
Number of Shares      
Nonvested balance at the beginning of the period (in shares) 35,000    
Granted (in shares) 14,000    
Vested (in shares) (49,000)    
Forfeited (in shares) 0    
Nonvested balance at the end of the period (in shares) 0 35,000  
Vested or expected to vest at the end of the period (in shares) 0    
Weighted-Average Grant Date Fair Value      
Nonvested balance at the beginning of the period (in dollars per share) $ 28.58    
Granted (in dollars per share) 28.58    
Vested (in dollars per share) 28.58    
Forfeited (in dollars per share) 0.00    
Nonvested balance at the end of the period (in dollars per share) 0.00 $ 28.58  
Vested or expected to vest at the end of the period (in dollars per share) $ 0.00    
Initially granted (in shares) 0 0 0