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Earnings Per Common Share (Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share) (Details) - USD ($)
 3 Months Ended
Dec. 30, 2023
Dec. 24, 2022
Class A Common Stock [Member]    
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]    
Net income allocated, basic $ 33,889,419 $ 53,708,852
Conversion of Class B to Class A shares 9,504,182 15,662,629
Net income allocated, diluted $ 43,393,601 $ 69,371,481
Weighted average shares outstanding, basic 14,517,696 14,381,312
Conversion of Class B to Class A shares 4,476,680 4,613,064
Weighted average shares outstanding, diluted 18,994,376 18,994,376
Earnings per share, Basic $ 2.33 $ 3.73
Earnings per share, Diluted $ 2.28 $ 3.65
Class B Common Stock [Member]    
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]    
Net income allocated, basic $ 9,504,182 $ 15,662,629
Net income allocated, diluted $ 9,504,182 $ 15,662,629
Weighted average shares outstanding, basic 4,476,680 4,613,064
Weighted average shares outstanding, diluted 4,476,680 4,613,064
Earnings per share, Basic $ 2.12 $ 3.40
Earnings per share, Diluted $ 2.12 $ 3.40