EARNINGS PER SHARE (Schedule of the Computation of Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Earnings Per Share [Abstract]
Net income	$ 35,158	$ 32,489	$ 116,346	$ 109,807
Less: Allocation of income to unvested stockholders	(956)	(67)	(2,137)	(1,033)
Net income available for distribution, Basic	34,202	32,422	114,209	108,774
Net income available for distribution, Diluted	$ 34,202	$ 32,422	$ 114,209	$ 108,774
Basic weighted average shares outstanding (in shares)	30,070	29,968	30,050	30,052
Add dilutive effect of performance stock units (two-class method) (in shares)	8	0	5	0
Diluted average shares outstanding (in shares)	30,078	29,968	30,055	30,052
Basic net income per share (in dollars per share)	$ 1.14	$ 1.08	$ 3.80	$ 3.62
Diluted net income per share (in dollars per share)	$ 1.14	$ 1.08	$ 3.80	$ 3.62