Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Class A Common Stock [Member] Common Stock [Member]	Class A Common Stock [Member] Retained Earnings [Member]	Class A Common Stock [Member]	Class B Common Stock [Member] Common Stock [Member]	Class B Common Stock [Member] Retained Earnings [Member]	Class B Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at Sep. 24, 2022	$ 718,879			$ 230,840			$ 12,406,551	$ 1,246,238,155	$ 1,259,594,425
Balance (in shares) at Sep. 24, 2022	14,377,575			4,616,801
Net income								210,811,959	210,811,959
Other comprehensive income (loss), net of income tax							827,080		827,080
Cash dividends		$ (9,511,647)	$ (9,511,647)		$ (2,749,677)	$ (2,749,677)
Common stock conversions	$ 5,975			$ (5,975)
Common stock conversions (in shares)	119,500			(119,500)
Balance at Sep. 30, 2023	$ 724,854			$ 224,865			13,233,631	1,444,788,790	1,458,972,140
Balance (in shares) at Sep. 30, 2023	14,497,075			4,497,301
Net income								105,541,301	105,541,301
Other comprehensive income (loss), net of income tax							(6,496,000)		(6,496,000)
Cash dividends		(9,588,957)	(9,588,957)		(2,679,394)	(2,679,394)
Common stock conversions	$ 2,393			$ (2,393)
Common stock conversions (in shares)	47,850			(47,850)
Balance at Sep. 28, 2024	$ 727,247			$ 222,472			6,737,631	1,538,061,740	1,545,749,090
Balance (in shares) at Sep. 28, 2024	14,544,925			4,449,451
Net income								83,592,501	83,592,501
Other comprehensive income (loss), net of income tax							(1,140,607)		(1,140,607)
Cash dividends		$ (9,600,567)	$ (9,600,567)		$ (2,668,840)	$ (2,668,840)
Common stock conversions	$ 184			$ (184)
Common stock conversions (in shares)	3,686			(3,686)
Balance at Sep. 27, 2025	$ 727,431			$ 222,288			$ 5,597,024	$ 1,609,384,834	$ 1,615,931,577
Balance (in shares) at Sep. 27, 2025	14,548,611			4,445,765