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, 2025	May 31, 2024	May 31, 2025	May 31, 2024	Aug. 31, 2024	Feb. 28, 2025	Feb. 29, 2024	Aug. 31, 2023
Amount
Beginning balance	$ 1,214,193	$ 1,095,354	$ 1,214,193	$ 1,095,354	$ 1,122,965	$ 1,172,586	$ 1,093,874	$ 1,107,043
Ending balance	1,214,193	1,095,354	1,214,193	1,095,354	1,122,965	1,172,586	1,093,874	1,107,043
Accumulated Other Comprehensive Loss
Amount
Beginning balance	(158,870)	(160,080)	(158,870)	(160,080)	(164,590)	(160,640)	(155,289)	(163,992)
Ending balance	(158,870)	(160,080)	(158,870)	(160,080)	(164,590)	$ (160,640)	$ (155,289)	$ (163,992)
Foreign currency translation adjustments
Amount
Other comprehensive income, before reclassification	2,048	(5,181)	6,540	5,053	693
Defined benefit pension plan
Amount
Other comprehensive income, before reclassification	49	91	176	302	501
Derivative instruments
Amount
Other comprehensive income, before reclassification	$ (327)	$ 299	$ (996)	$ (1,443)	(2,189)
Amounts reclassified from accumulated other comprehensive loss
Amount
Amounts reclassified from accumulated other comprehensive loss					$ 397