Annual report pursuant to Section 13 and 15(d)

Repurchase of Common Stock (Narrative) (Details)

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Repurchase of Common Stock (Narrative) (Details) - USD ($)
12 Months Ended 39 Months Ended 51 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Oct. 03, 2015
Oct. 03, 2015
Oct. 01, 2016
Equity [Abstract]          
Shares authorized for repurchase $ 50,000,000.0        
Stock Repurchase Program, Authorized Additional Shares for Repurchase, Amount $ 10,000,000        
Total Number of Shares Purchased 413,337 217,568 140,336   2,893,487
Shares repurchased, value $ 7,800,000 $ 3,500,000 $ 2,100,000 $ 38,700,000