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Summary Of Significant Accounting Policies (Earnings Per Share ("EPS")) (Narrative) (Details) - shares
12 Months Ended
Sep. 30, 2016
Oct. 02, 2015
Oct. 03, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Percentage of Class Dividends on Class A Common Stock Relative to Class B Common Stock 110.00%    
Stock Options [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 0 0 0
Non-vested Stock [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 162,472 214,027 319,632