Consolidated Condensed Statements of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock At Cost	Stock Employee Compensation Trust (SECT)	Supplemental Retirement Plan (SERP) Trust	Accumulated Other Comprehensive Loss	Class A Common Stock	Class A Common Stock Treasury Stock At Cost	Class A Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock	Class B Common Stock Treasury Stock At Cost	Class B Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock Supplemental Retirement Plan (SERP) Trust
Beginning of period at Oct. 03, 2020		$ 51,280	$ 472,645	$ 2,112,734	$ (990,783)	$ (64,242)	$ (53,098)	$ (285,453)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			3,118		850
Equity-based compensation expense			2,412
Adjustments to market - SECT and SERP			26,863
Net earnings	$ 37,842			37,842
Dividends				(8,010)
Class A and B shares purchased					(10,862)
Issuance of shares - SECT						274
Purchase of shares - SECT	(655)					(655)
Adjustment to market						(13,974)	(12,888)
Other comprehensive income (loss)	35,191							35,191
End of period at Jan. 02, 2021	$ 1,303,244	51,280	505,038	2,142,566	(1,000,795)	(78,597)	(65,986)	(250,262)
Beginning of period - Common Stock at Oct. 03, 2020									43,799,229			7,480,484
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A									3,000			(3,000)
End of period - Common Stock at Jan. 02, 2021									43,802,229			7,477,484
Beginning of period, Shares at Oct. 03, 2020										(13,959,998)	(425,148)		(3,344,877)	(557,543)	(826,170)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares										14,452			71,059
Class A and B shares purchased, shares										(72,575)			(92,861)
Issuance of shares - SECT														4,135
Purchase of shares - SECT														(8,543)
End of period, Shares at Jan. 02, 2021										(14,018,121)	(425,148)		(3,366,679)	(561,951)	(826,170)
Increase (Decrease) in Stockholders' Equity
Common Stock, Dividends, Per Share, Declared	$ 0.25
Beginning of period at Oct. 02, 2021	$ 1,400,144	51,280	509,622	2,237,848	(1,007,506)	(79,776)	(63,764)	(247,560)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			1,755		1,077
Equity-based compensation expense			2,405
Adjustments to market - SECT and SERP			5,075
Net earnings	46,265			46,265
Dividends				(8,031)
Class A and B shares purchased					(16,657)
Issuance of shares - SECT						2,075
Purchase of shares - SECT	(2,275)					(2,275)
Adjustment to market						(2,745)	(2,330)
Other comprehensive income (loss)	(2,335)							(2,335)
End of period at Jan. 01, 2022	$ 1,424,423	$ 51,280	$ 518,857	$ 2,276,082	$ (1,023,086)	$ (82,721)	$ (66,094)	$ (249,895)
Beginning of period - Common Stock at Oct. 02, 2021									43,803,236			7,476,477
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A									0			0
End of period - Common Stock at Jan. 01, 2022									43,803,236			7,476,477
Beginning of period, Shares at Oct. 02, 2021										(14,157,721)	(425,148)		(3,179,055)	(600,880)	(826,170)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares										22,042			58,338
Class A and B shares purchased, shares										(190,439)			(33,550)
Issuance of shares - SECT														25,000
Purchase of shares - SECT														(27,827)
End of period, Shares at Jan. 01, 2022										(14,326,118)	(425,148)		(3,154,267)	(603,707)	(826,170)
Increase (Decrease) in Stockholders' Equity
Common Stock, Dividends, Per Share, Declared	$ 0.25