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		6 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024
Earnings Per Share [Abstract]
Net income	$ 43,760	$ 39,271	$ 81,188	$ 77,318
Less: Allocation of income to unvested stockholders	(155)	(114)	(1,180)	(893)
Net income available for distribution, Basic	43,605	39,157	80,008	76,425
Net income available for distribution, Diluted	$ 43,605	$ 39,157	$ 80,008	$ 76,425
Basic weighted average shares outstanding (in shares)	30,063	29,920	30,041	30,095
Add dilutive effect of performance stock units (two-class method) (in shares)	5	0	3	0
Diluted average shares outstanding (in shares)	30,068	29,920	30,044	30,095
Basic net income per share (in dollars per share)	$ 1.45	$ 1.31	$ 2.66	$ 2.54
Diluted net income per share (in dollars per share)	$ 1.45	$ 1.31	$ 2.66	$ 2.54