Fair Value Measurements (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items]
Investment in hedge funds	$ 3,000	$ 3,200
Contingent consideration payment	2,500
Shares of the Company’s Class B common stock	100	1,000
Other Operating Income (Expense) [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Gain on write-off of contingent consideration payment obligation	1,600	$ 300
Estimated fair value of contingent consideration	$ 200
Common Stock [Member] | Common Class B [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Number of shares issued in acquisition	3,051	28,000
Shares of the Company’s Class B common stock