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Earnings Per Share ("EPS") (Details) - shares
3 Months Ended 6 Months Ended
Mar. 31, 2017
Apr. 01, 2016
Mar. 31, 2017
Apr. 01, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Percentage of cash dividends on Class A common stock relative to Class B common stock     110.00%  
Non-vested Stock [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Shares 95,068 170,357 119,059 178,435
Restricted Stock Units (RSUs) [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Shares 41,349 48,456 39,910 48,456