CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock, Common
Balance (in shares) at Jul. 31, 2021		10,978	4,294			724
Balance at Jul. 31, 2021	$ 341,473	$ 70,594	$ 697	$ 293,185	$ (9,064)	$ (13,939)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	26,830			26,830
Other comprehensive income, net of tax	15,199				15,199
Dividends	(13,041)			(13,041)
Treasury stock purchases (in shares)						26
Treasury stock purchases	(649)					$ (649)
Restricted shares forfeited (in shares)		(16)
Restricted shares forfeited	(198)	$ (198)
Share-based compensation expense (in shares)		9
Share-based compensation expense	2,495	$ 2,495
Balance (in shares) at Jul. 30, 2022		10,971	4,294			750
Balance at Jul. 30, 2022	372,109	$ 72,891	$ 697	306,974	6,135	$ (14,588)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	49,716			49,716
Other comprehensive income, net of tax	1,999				1,999
Dividends	$ (13,193)			(13,193)
Treasury stock purchases (in shares)	23					162
Treasury stock purchases	$ (3,739)					$ (3,739)
Restricted shares forfeited (in shares)		(10)
Restricted shares forfeited	(47)	$ (47)
Share-based compensation expense (in shares)		512
Share-based compensation expense	3,321	$ 3,321
Conversion of Class B shares to Class A shares	0	$ 14	$ (14)	0	0	$ 0
Conversion of Class B shares to Class A (in shares)		90	(90)			0
Balance (in shares) at Jul. 29, 2023		11,563	4,204			912
Balance at Jul. 29, 2023	$ 410,166	$ 76,179	$ 683	$ 343,497	$ 8,134	$ (18,327)