CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]
Balance (in shares) at Jul. 28, 2018		10,575	4,304			496
Balance at Jul. 28, 2018	$ 303,145	$ 61,678	$ 699	$ 258,104	$ (8,185)	$ (9,151)
Net income	6,269			6,269
Other comprehensive income, net of tax	102				102
Dividends	(3,222)			(3,222)
Treasury stock purchases (in shares)						22
Treasury stock purchases	(565)					$ (565)
Share-based compensation expense (in shares)		8
Share-based compensation expense	821	$ 821
Balance (in shares) at Oct. 27, 2018		10,583	4,304			518
Balance at Oct. 27, 2018	306,550	$ 62,499	$ 699	261,151	(8,083)	$ (9,716)
Balance (in shares) at Jul. 27, 2019		10,593	4,294			502
Balance at Jul. 27, 2019	318,672	$ 65,114	$ 697	270,753	(8,342)	$ (9,550)
Net income	2,567			2,567
Other comprehensive income, net of tax	101				101
Dividends	(3,220)			(3,220)
Treasury stock purchases (in shares)						1
Treasury stock purchases	(20)					$ (20)
Restricted shares forfeited (in shares)		(2)
Restricted shares forfeited	(30)	$ (30)
Share-based compensation expense (in shares)		2
Share-based compensation expense	863	$ 863
Balance (in shares) at Oct. 26, 2019		10,593	4,294			503
Balance at Oct. 26, 2019	$ 322,447	$ 65,947	$ 697	$ 273,614	$ (8,241)	$ (9,570)