Consolidated Balance Sheets (Parentheticals) - $ / shares shares in Thousands	Jul. 31, 2023	Jul. 31, 2022
Preferred stock par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,400	2,400
Preferred stock, shares issued
Preferred stock, and outstanding
Treasury stock, shares	833	74
Class A Common Stock
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	2,600	2,600
Common stock, shares issued	525	525
Common stock, shares outstanding	525	525
Class B Common Stock
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	40,000	40,000
Common stock, shares issued	14,634	13,951
Common stock, shares outstanding	13,801	13,877