CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Class A Nonvoting Common Stock	Class B Voting Common Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Class A Nonvoting Common Stock	Retained Earnings Class B Voting Common Stock	Treasury Stock, Common	Accumulated Other Comprehensive Loss
Equity, Beginning Balance at Jul. 31, 2023	$ 990,919			$ 548	$ 351,771	$ 1,021,870			$ (290,209)	$ (93,061)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	141,759					141,759
Other Comprehensive Income (Loss), Net of Tax	(13,346)									(13,346)
Issuance of shares of Class A Common Stock under stock plan	2,919				(3,910)				6,829
Tax benefit and withholdings from deferred compensation distributions	149				149
Repurchase of shares of Class A Common Stock, including excise taxes	(72,830)								(72,830)
Stock-based compensation expense	6,422				6,422
Dividends, Common Stock, Cash		$ (31,454)	$ (2,436)				$ (31,454)	$ (2,436)
Equity, Ending Balance at Apr. 30, 2024	1,022,102			548	354,432	1,129,739			(356,210)	(106,407)
Equity, Beginning Balance at Jan. 31, 2024	1,038,732			548	353,794	1,090,045			(305,714)	(99,941)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	50,890					50,890
Other Comprehensive Income (Loss), Net of Tax	(6,466)									(6,466)
Issuance of shares of Class A Common Stock under stock plan	(85)				(521)				436
Repurchase of shares of Class A Common Stock, including excise taxes	(50,932)								(50,932)
Stock-based compensation expense	1,159				1,159
Dividends, Common Stock, Cash		(10,364)	(832)				(10,364)	(832)
Equity, Ending Balance at Apr. 30, 2024	1,022,102			548	354,432	1,129,739			(356,210)	(106,407)
Equity, Beginning Balance at Jul. 31, 2024	1,066,658			548	353,654	1,174,025			(351,947)	(109,622)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	139,380					139,380
Other Comprehensive Income (Loss), Net of Tax	15,888									15,888
Issuance of shares of Class A Common Stock under stock plan	3,242				(6,061)				9,303
Tax benefit and withholdings from deferred compensation distributions	190				190
Repurchase of shares of Class A Common Stock, including excise taxes	(33,330)								(33,330)
Stock-based compensation expense	9,762				9,762
Dividends, Common Stock, Cash		(31,749)	(2,488)				(31,749)	(2,488)
Equity, Ending Balance at Apr. 30, 2025	1,167,553			548	357,545	1,279,168			(375,974)	(93,734)
Equity, Beginning Balance at Jan. 31, 2025	1,120,468			548	356,531	1,238,275			(343,059)	(131,827)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	52,263
Other Comprehensive Income (Loss), Net of Tax	38,093									38,093
Issuance of shares of Class A Common Stock under stock plan	(340)				(755)				415
Repurchase of shares of Class A Common Stock, including excise taxes	(33,330)								(33,330)
Stock-based compensation expense	1,769				1,769
Dividends, Common Stock, Cash		$ (10,521)	$ (849)				$ (10,521)	$ (849)
Equity, Ending Balance at Apr. 30, 2025	$ 1,167,553			$ 548	$ 357,545	$ 1,279,168			$ (375,974)	$ (93,734)