STOCKHOLDERS' EQUITY (Schedule of Components of Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023	Aug. 31, 2023
Amount
Beginning balance	$ 1,093,874	$ 1,043,912	$ 1,107,043	$ 991,073	$ 991,073
Ending balance	1,095,354	1,089,693	1,095,354	1,089,693	1,107,043
Accumulated Other Comprehensive Loss
Amount
Beginning balance	(155,289)	(183,703)	(163,992)	(195,586)	(195,586)
Ending balance	(160,080)	(169,603)	(160,080)	(169,603)	(163,992)
Foreign currency translation adjustments
Amount
Other comprehensive income, before reclassification	(5,181)	15,285	5,053	26,599	33,708
Defined benefit pension plan
Amount
Other comprehensive income, before reclassification	91	15	302	30	(1,819)
Derivative instruments
Amount
Other comprehensive income, before reclassification	$ 299	$ (1,200)	$ (1,443)	$ (646)	(443)
Amounts reclassified from accumulated other comprehensive loss
Amount
Amounts reclassified from accumulated other comprehensive loss					$ 148