CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member] Common Class A	Common Stock [Member] Common Class B	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]
Balance (in shares) at Jul. 25, 2020		10,985	4,294			726
Balance at Jul. 25, 2020	$ 332,320	$ 68,072	$ 697	$ 286,241	$ (8,751)	$ (13,939)
Net income	3,360			3,360
Other comprehensive income, net of tax	695				695
Dividends	(3,257)			(3,257)
Restricted shares forfeited (in shares)		(5)
Restricted shares forfeited	(12)	$ (12)
Share-based compensation expense (in shares)		8
Share-based compensation expense	635	$ 635
Balance (in shares) at Oct. 24, 2020		10,988	4,294			726
Balance at Oct. 24, 2020	333,741	$ 68,695	$ 697	286,344	(8,056)	$ (13,939)
Balance (in shares) at Jul. 31, 2021		10,978	4,294			726
Balance at Jul. 31, 2021	341,473	$ 70,594	$ 697	293,185	(9,064)	$ (13,939)
Net income	7,328			7,328
Other comprehensive income, net of tax	879				879
Dividends	(3,264)			(3,264)
Treasury stock purchases (in shares)						4
Restricted shares forfeited	(89)					$ (89)
Share-based compensation expense (in shares)		9
Share-based compensation expense	644	$ 644
Balance (in shares) at Oct. 30, 2021		10,987	4,294			730
Balance at Oct. 30, 2021	$ 346,971	$ 71,238	$ 697	$ 297,249	$ (8,185)	$ (14,028)