Condensed Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Class A Common Stock [Member] Common Stock [Member]	Class A Common Stock [Member] Retained Earnings [Member] Regular Dividends [Member]	Class A Common Stock [Member] Retained Earnings [Member] Special Dividends [Member]	Class A Common Stock [Member] Treasury Stock [Member]	Class A Common Stock [Member]	Class B Common Stock [Member] Common Stock [Member]	Class B Common Stock [Member] Retained Earnings [Member] Regular Dividends [Member]	Class B Common Stock [Member] Retained Earnings [Member] Special Dividends [Member]	Class B Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance, Value at Aug. 29, 2020	$ 47					$ 10				$ 690,739	$ 749,515	$ (21,418)	$ (103,948)		$ 5,628
Foreign Currency Translation Adjustment												2,612			210	$ 2,822
Net Income (Loss)											56,539				586	56,539
Associate Incentive Plans										22,011
Associate Incentive Plans													1,822
Repurchases of Class A common stock, Value				$ (3,519)	$ (3,519)
Exchange of Class B common stock for Class A common stock, value	1					(1)
Cash dividends declared on Common Stock		$ (69,808)	$ (163,511)				$ (13,877)	$ (31,840)
Dividend equivalents declared, net of cancellations											(3,261)
Balance, Value at Feb. 27, 2021	48					9				712,750	523,757	(18,806)	(105,645)	$ 1,112,113	6,424	1,118,537
Dividends declared per Common Share					$ 5.00				$ 5.00
Balance, Value at Nov. 28, 2020	48					9				702,341	547,957	(19,683)	(106,197)		6,412
Foreign Currency Translation Adjustment												877			(251)	626
Net Income (Loss)											18,085				263	18,085
Associate Incentive Plans										10,409
Associate Incentive Plans													912
Repurchases of Class A common stock, Value				(360)	$ (360)
Exchange of Class B common stock for Class A common stock, value
Cash dividends declared on Common Stock		(35,047)					(6,823)
Dividend equivalents declared, net of cancellations											(415)
Balance, Value at Feb. 27, 2021	48					9				712,750	523,757	(18,806)	(105,645)	1,112,113	6,424	1,118,537
Dividends declared per Common Share					$ 0.75				0.75
Balance, Value at Aug. 28, 2021	48					9				740,867	532,315	(17,984)	(104,384)		11,001	1,161,872
Foreign Currency Translation Adjustment												(1,137)			(87)	(1,224)
Net Income (Loss)											135,998				413	135,998
Associate Incentive Plans										25,289
Associate Incentive Plans													1,796
Repurchases of Class A common stock, Value				(4,813)	$ (4,813)
Exchange of Class B common stock for Class A common stock, value
Cash dividends declared on Common Stock		(70,605)					(12,981)
Dividend equivalents declared, net of cancellations											(444)
Balance, Value at Feb. 26, 2022	48					9				766,156	584,283	(19,121)	(107,401)	1,223,974	11,327	1,235,301
Dividends declared per Common Share					$ 1.50				1.50
Balance, Value at Nov. 27, 2021	48					9				756,314	556,586	(22,065)	(108,138)		10,280
Foreign Currency Translation Adjustment												2,944			824	3,768
Net Income (Loss)											69,931				223	69,931
Associate Incentive Plans										9,842
Associate Incentive Plans													991
Repurchases of Class A common stock, Value				$ (254)	$ (254)
Exchange of Class B common stock for Class A common stock, value
Cash dividends declared on Common Stock		$ (35,356)					$ (6,490)
Dividend equivalents declared, net of cancellations											(388)
Balance, Value at Feb. 26, 2022	$ 48					$ 9				$ 766,156	$ 584,283	$ (19,121)	$ (107,401)	$ 1,223,974	$ 11,327	$ 1,235,301
Dividends declared per Common Share					$ 0.75				$ 0.75