CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock
Beginning balance (in shares) at Aug. 31, 2022		31,698,000
Beginning balance at Aug. 31, 2022	$ 991,073	$ 3	$ 481,406	$ (195,586)	$ 736,894	$ (31,644)
Treasury stock, beginning balance (in shares) at Aug. 31, 2022						793,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of treasury stock (in shares)						85,000
Purchase of treasury stock	(5,993)					$ (5,993)
Issuance of treasury stock (in shares)		(7,000)				(7,000)
Issuance of treasury stock	0		(546)			$ 546
Issuance of restricted stock awards (in shares)		303,000
Forfeiture of restricted stock awards (in shares)		(59,000)
Stock-based compensation	13,522		13,522
Dividends paid to stockholders	(14,290)				(14,290)
Dividend payable to stockholders	(14,426)				(14,426)
Net income	93,824				93,824
Other comprehensive income (loss)	25,983			25,983
Ending balance (in shares) at May. 31, 2023		31,935,000
Ending balance at May. 31, 2023	1,089,693	$ 3	494,382	(169,603)	802,002	$ (37,091)
Treasury stock, ending balance (in shares) at May. 31, 2023						871,000
Beginning balance (in shares) at Feb. 28, 2023		31,869,000
Beginning balance at Feb. 28, 2023	1,043,912	$ 3	492,099	(183,703)	772,430	$ (36,917)
Treasury stock, beginning balance (in shares) at Feb. 28, 2023						868,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of treasury stock (in shares)						3,000
Purchase of treasury stock	(174)					$ (174)
Issuance of restricted stock awards (in shares)		66,000
Stock-based compensation	2,283		2,283
Dividends paid to stockholders	(30)				(30)
Dividend payable to stockholders	30				30
Net income	29,572				29,572
Other comprehensive income (loss)	14,100			14,100
Ending balance (in shares) at May. 31, 2023		31,935,000
Ending balance at May. 31, 2023	$ 1,089,693	$ 3	494,382	(169,603)	802,002	$ (37,091)
Treasury stock, ending balance (in shares) at May. 31, 2023						871,000
Beginning balance (in shares) at Aug. 31, 2023	30,976,941	31,935,000
Beginning balance at Aug. 31, 2023	$ 1,107,043	$ 3	497,434	(163,992)	817,559	$ (43,961)
Treasury stock, beginning balance (in shares) at Aug. 31, 2023	957,959					958,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of treasury stock (in shares)						969,000
Purchase of treasury stock	$ (71,852)					$ (71,852)
Issuance of treasury stock (in shares)	(3,000)	(3,000)				(3,000)
Issuance of treasury stock	$ 0		(185)			$ 185
Issuance of restricted stock awards (in shares)		662,000
Forfeiture of restricted stock awards (in shares)		(31,000)
Stock-based compensation	12,652		12,652
Dividends paid to stockholders	(48,437)				(48,437)
Dividend payable to stockholders	(17,771)				(17,771)
Net income	109,807				109,807
Other comprehensive income (loss)	$ 3,912			3,912
Ending balance (in shares) at May. 31, 2024	30,639,028	32,563,000
Ending balance at May. 31, 2024	$ 1,095,354	$ 3	509,901	(160,080)	861,158	$ (115,628)
Treasury stock, ending balance (in shares) at May. 31, 2024	1,923,780					1,924,000
Beginning balance (in shares) at Feb. 29, 2024		32,579,000
Beginning balance at Feb. 29, 2024	$ 1,093,874	$ 3	505,349	(155,289)	859,325	$ (115,514)
Treasury stock, beginning balance (in shares) at Feb. 29, 2024						1,922,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchase of treasury stock (in shares)						2,000
Purchase of treasury stock	(114)					$ (114)
Issuance of restricted stock awards (in shares)		7,000
Forfeiture of restricted stock awards (in shares)		(23,000)
Stock-based compensation	4,552		4,552
Dividends paid to stockholders	(30,656)				(30,656)
Net income	32,489				32,489
Other comprehensive income (loss)	$ (4,791)			(4,791)
Ending balance (in shares) at May. 31, 2024	30,639,028	32,563,000
Ending balance at May. 31, 2024	$ 1,095,354	$ 3	$ 509,901	$ (160,080)	$ 861,158	$ (115,628)
Treasury stock, ending balance (in shares) at May. 31, 2024	1,923,780					1,924,000