Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
BALANCE at Jul. 31, 2022	$ 170,637	$ 33	$ 277	$ 296,005	$ (101,565)	$ (11,305)	$ (15,830)	$ 3,022
Repurchases of Class B common stock through repurchase program	(5,006)				(5,006)
Restricted Class B common stock purchased from employees	(335)				(335)
Stock-based compensation	572		1	571
Distributions to noncontrolling interests	(99)							(99)
Other comprehensive loss	(367)					(367)
Stock issued to certain executive officers for bonus payments	615			615
Net income	12,422						11,002	1,420
BALANCE at Oct. 31, 2022	178,439	33	278	297,191	(106,906)	(11,672)	(4,828)	4,343
BALANCE at Jul. 31, 2023	199,996	33	279	301,408	(115,461)	(17,192)	24,662	6,267
Exercise of stock options	172			172
Repurchases of Class B common stock through repurchase program	(2,836)				(2,836)
Restricted Class B common stock purchased from employees	(15)				(15)
Stock-based compensation	771			771
Distributions to noncontrolling interests	(55)							(55)
Other comprehensive loss	565					565
Stock issued to certain executive officers for bonus payments
Net income	8,369						7,659	710
BALANCE at Oct. 31, 2023	$ 206,967	$ 33	$ 279	$ 302,351	$ (118,312)	$ (16,627)	$ 32,321	$ 6,922