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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. 28, 2024
Dec. 30, 2023
Class A Common Stock [Member]    
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]    
Net income allocated, basic $ 12,979,100 $ 33,889,419
Conversion of Class B to Class A shares 3,609,240 9,504,182
Net income allocated, diluted $ 16,588,340 $ 43,393,601
Weighted average shares outstanding, basic 14,545,223 14,517,696
Conversion of Class B to Class A shares 4,449,153 4,476,680
Weighted average shares outstanding, diluted 18,994,376 18,994,376
Earnings per share, Basic $ 0.89 $ 2.33
Earnings per share, Diluted $ 0.87 $ 2.28
Class B Common Stock [Member]    
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share [Line Items]    
Net income allocated, basic $ 3,609,240 $ 9,504,182
Net income allocated, diluted $ 3,609,240 $ 9,504,182
Weighted average shares outstanding, basic 4,449,153 4,476,680
Weighted average shares outstanding, diluted 4,449,153 4,476,680
Earnings per share, Basic $ 0.81 $ 2.12
Earnings per share, Diluted $ 0.81 $ 2.12