Earnings Per Common Share (Reconciliation Of Numerators And Denominators of Basic and Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended	9 Months Ended
Jun. 29, 2013	Jun. 23, 2012	Jun. 29, 2013	Jun. 23, 2012
Class A Common Stock
Numerator: Allocated net income
Net income allocated, basic	$ (8,081,085)	$ 7,273,195	$ 2,904,941	$ 16,759,202
Conversion of Class B to Class A shares		5,785,411	2,328,639	13,408,695
Net income allocated, diluted	(8,081,085)	13,058,606	5,233,580	30,167,897
Denominator: Weighted average shares outstanding
Weighted average shares outstanding, basic	12,982,792	12,938,635	12,966,377	12,934,803
Conversion of Class B to Class A shares		11,321,141	11,276,916	11,381,651
Weighted average shares outstanding, diluted	12,982,792	24,259,776	24,243,293	24,316,454
Earnings per share
Basic	$ (0.62)	$ 0.56	$ 0.23	$ 1.29
Diluted	$ (0.62)	$ 0.54	$ 0.21	$ 1.24
Class B Common Stock
Numerator: Allocated net income
Net income allocated, basic	(6,343,138)	5,785,411	2,328,639	13,408,695
Net income allocated, diluted	$ (6,343,138)	$ 5,785,411	$ 2,328,639	$ 13,408,695
Denominator: Weighted average shares outstanding
Weighted average shares outstanding, basic	11,227,533	11,321,141	11,276,916	11,381,651
Weighted average shares outstanding, diluted	11,227,533	11,321,141	11,276,916	11,381,651
Earnings per share
Basic	$ (0.56)	$ 0.51	$ 0.21	$ 1.18
Diluted	$ (0.56)	$ 0.51	$ 0.21	$ 1.18

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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