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Summary Of Significant Accounting Policies (Schedule Of Basic And Diluted Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Oct. 03, 2014
Jun. 27, 2014
Mar. 28, 2014
Dec. 27, 2013
Sep. 27, 2013
Jun. 28, 2013
Mar. 29, 2013
Dec. 28, 2012
Oct. 03, 2014
Sep. 27, 2013
Sep. 28, 2012
Net income $ (786) $ 4,698 $ 7,404 $ (2,193) $ (3,511) $ 13,654 $ 8,937 $ 247 $ 9,123 $ 19,327 $ 10,134
Less: Undistributed earnings reallocated to non-vested shareholders                 (304) (792) (506)
Dilutive earnings                 $ 8,819 $ 18,535 $ 9,628
Dilutive stock options and restricted stock units                 3 6 8
Weighted average common shares - Dilutive                 9,635 9,523 9,379
Class A [Member]
                      
Weighted average common shares - Basic                 8,420 8,305 8,155
Net (loss) income per common share - Basic                 $ 0.93 $ 1.98 $ 1.04
Net income per common Class A and B share - Diluted                 $ 0.90 $ 1.95 $ 1.03
Class B [Member]
                      
Weighted average common shares - Basic                 1,212 1,212 1,216
Net (loss) income per common share - Basic                 $ 0.84 $ 1.79 $ 0.94
Net income per common Class A and B share - Diluted                 $ 0.90 $ 1.95 $ 1.03