EMPLOYEES' RETIREMENT PLANS (Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 335
Interest cost	724	892
Special termination benefits	0	1,918	$ 0
Settlements, curtailments and other	0	1,314	0
Total net periodic benefit (gain) cost	(479)	3,575	522
Net actuarial (gain) loss arising during measurement period	(4,344)	3,642	2,823
Amortization of net actuarial gain	0	(3,232)	0
Total recognized in other comprehensive income	(4,344)	410	2,823
Cost of Goods Sold
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	335	354
Selling, General and Administrative Expenses
Defined Benefit Plan Disclosure [Line Items]
Expected administrative expenses	290	450	250
Interest cost	724	892	926
Expected return on Plan assets	$ (1,493)	$ (1,334)	$ (1,008)