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Investment in RP Finance, LLC (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Oct. 31, 2021	Jul. 31, 2022	Jul. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Nov. 30, 2020	Aug. 31, 2020	Feb. 03, 2020
Investment in RP Finance, LLC (Details) [Line Items]
Amount of revolving commitment to funds			$ 10,000	$ 5,000	$ 10,000	$ 5,000	$ 5,000
Income from interest		$ 383
Cumulative funds description		As of July 31, 2022, the Company has funded a cumulative total of $9.375 million in accordance with its 37.5% ownership interests in RP Finance.
Reserve on related party interest receivable of Interest income, net		$ 1,900
Rafael Pharmaceuticals [Member]
Investment in RP Finance, LLC (Details) [Line Items]
Amount of revolving commitment to funds				$ 5,000		$ 5,000	$ 5,000
Percentage of issued and outstanding shares		12.00%
Related party receivable		$ 9,375
RP Finance [Member]
Investment in RP Finance, LLC (Details) [Line Items]
Income from interest		$ 575
Percentage of ownership interest		37.50%	37.50%
Equity loss	$ 575
Equity method investment		$ 0
Line of Credit Agreement [Member]
Investment in RP Finance, LLC (Details) [Line Items]
Amount of revolving commitment to funds								$ 50,000,000
Description line of credit facility		The Company owns 37.5% of the equity interests in RP Finance and is required to fund 37.5% of funding requests from Cornerstone Pharmaceuticals under the RPF Line of Credit. Howard Jonas owns 37.5% of the equity interests in RP Finance, and is required to fund 37.5% of funding requests from Cornerstone Pharmaceuticals under the RPF Line of Credit. The remaining 25% equity interests in RP Finance are owned by other shareholders of Cornerstone Pharmaceuticals.

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