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
Beginning balance at Jul. 31, 2022	$ 911,298			$ 548	$ 345,266	$ 892,417			$ (217,856)	$ (109,077)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	77,427					77,427
Other Comprehensive Income (Loss), Net of Tax	13,707									13,707
Issuance of shares of Class A Common Stock under stock plan	1,179				(1,200)				2,379
Tax benefit and withholdings from deferred compensation distributions	66				66
Stock-based compensation expense	4,381				4,381
Repurchase of shares of Class A Common Stock, including excise taxes	17,861								17,861
Dividends, Common Stock, Cash		$ (21,224)	$ (1,569)				$ (21,224)	$ (1,569)
Ending balance at Jan. 31, 2023	967,404			548	348,513	947,051			(233,338)	(95,370)
Beginning balance at Oct. 31, 2022	911,725			548	346,064	920,482			(228,855)	(126,514)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	37,986					37,986
Other Comprehensive Income (Loss), Net of Tax	31,144									31,144
Issuance of shares of Class A Common Stock under stock plan	2,334				1,026				1,308
Stock-based compensation expense	1,423				1,423
Repurchase of shares of Class A Common Stock, including excise taxes	5,791								5,791
Dividends, Common Stock, Cash		(10,603)	(814)				(10,603)	(814)
Ending balance at Jan. 31, 2023	967,404			548	348,513	947,051			(233,338)	(95,370)
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	90,869					90,869
Other Comprehensive Income (Loss), Net of Tax	(6,880)									(6,880)
Issuance of shares of Class A Common Stock under stock plan	(3,004)				(3,389)				6,393
Tax benefit and withholdings from deferred compensation distributions	149				149
Stock-based compensation expense	5,263				5,263
Repurchase of shares of Class A Common Stock, including excise taxes	21,898								21,898
Dividends, Common Stock, Cash		(21,090)	(1,604)				(21,090)	(1,604)
Ending balance at Jan. 31, 2024	1,038,732			548	353,794	1,090,045			(305,714)	(99,941)
Beginning balance at Oct. 31, 2023	994,992			548	352,421	1,057,773			(300,467)	(115,283)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	43,628
Other Comprehensive Income (Loss), Net of Tax	15,342
Issuance of shares of Class A Common Stock under stock plan	(2,739)				273				2,466
Stock-based compensation expense	1,100				1,100
Repurchase of shares of Class A Common Stock, including excise taxes	7,713								7,713
Dividends, Common Stock, Cash		$ (10,525)	$ (831)				$ (10,525)	$ (831)
Ending balance at Jan. 31, 2024	$ 1,038,732			$ 548	$ 353,794	$ 1,090,045			$ (305,714)	$ (99,941)