Note 7 - Pension and Postretirement Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 04, 2023	Aug. 27, 2022	Feb. 26, 2022	Aug. 28, 2021
UNITED STATES
Net periodic (benefit) cost	$ (3,096)		$ (3,737)
Foreign Plan [Member]
Net periodic (benefit) cost	599		427
Pension Plan [Member] | UNITED STATES
Service cost		$ 0		$ 0
Interest cost		3,475		2,368
Expected return on assets		(7,206)		(7,117)
Prior service (benefit) cost		0		(1)
Actuarial loss (gain)		635		1,013
Pension Plan [Member] | Foreign Plan [Member]
Service cost		413		720
Interest cost		1,410		789
Expected return on assets		(1,730)		(1,747)
Prior service (benefit) cost		15		16
Actuarial loss (gain)		491		649
Other Postretirement Benefits Plan [Member]
Service cost		0		0
Interest cost		301		184
Expected return on assets		(2,465)		(2,719)
Prior service (benefit) cost		0		0
Actuarial loss (gain)		$ 0		$ (845)
Net periodic (benefit) cost	$ (2,164)		$ (3,380)