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Equity Investments (Details Narrative) - USD ($)				1 Months Ended	2 Months Ended	3 Months Ended			9 Months Ended
	Jul. 31, 2022	Aug. 10, 2021	Feb. 02, 2021	Aug. 31, 2022	Apr. 30, 2023	May 31, 2023	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022	Apr. 06, 2023	Nov. 30, 2022	Jul. 28, 2022	Jul. 31, 2021
Proceeds from sale of common stock									$ 34,309,000	$ 7,752,000
Payments to purchase additional shares									168,000	1,051,000
Equity method investment, aggregate cost					$ 8,200,000		$ 8,200,000		8,200,000
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity, Accounting Treatment							These basis differences are being amortized over the 6-year estimated life of the customer list
Equity Method Investee [Member]
Payments to purchase additional shares							$ 168,000		$ 168,000	1,051,000
Increase in secured debt including accrued interest	$ 2,500,000										$ 4,000,000.0
Receivable with imputed interest, effective yield (Interest rate)	15.00%
Equity Method Investee [Member] | February 2023 [Member]
Receivable with imputed interest, due date	Feb. 28, 2023
Equity Method Investee [Member] | April 2023 [Member]
Receivable with imputed interest, due date	Apr. 30, 2023
EMI Preferred Stock [Member]
Payments to purchase additional shares					$ 200,000	$ 700,000
Equity method investment, ownership percentage						33.30%
Unrestricted Common Class B of Rafael Holdings Inc [Member]
Related party shares received									28,320
Class B Common Stock [Member] | Rafael Holdings Inc. [Member]
Owned shares												11,404		261,894
Visa Series A Convertible Participating Preferred Stock [Member]
Owned shares				58									58
Convertible preferred stock, shares issued upon conversion													3.645
Visa Series A Convertible Participating Preferred Stock [Member] | Visa Class A Common Stock [Member]
Owned shares				5,800
Proceeds from sale of common stock				$ 1,300,000
Visa Series C Convertible Participating Preferred Stock [Member]
Equity securities without readily determinable fair value, upward price adjustment, annual amount							$ 13,000		$ 100,000
Equity securities without readily determinable fair value, downward price adjustment, annual amount								$ 100,000		$ 300,000
Series B Convertible Preferred Stock [Member] | Equity Method Investee [Member]
Payments to purchase additional shares			$ 4,000,000.0
Equity method investment, ownership percentage			23.95%
Series C Convertible Preferred Stock [Member] | Equity Method Investee [Member]
Payments to purchase additional shares		$ 1,100,000
Equity method investment, ownership percentage		26.57%

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