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Related Party Transactions (Details)		1 Months Ended				3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 08, 2020 USD ($)	Nov. 15, 2021 USD ($) shares	Jan. 28, 2021	Dec. 31, 2020 USD ($) $ / shares shares	May 31, 2020	Jan. 31, 2022 USD ($) m²	Jan. 31, 2021 USD ($)	Jan. 31, 2022 USD ($) m²	Jan. 31, 2021 USD ($)	Jul. 31, 2021 USD ($) shares
Related Party Transactions (Details) [Line Items]
Related party expenses						$ 80,000	$ 90,000	$ 156,000	$ 155,000
Due to related parties						$ 80,000	29,000	$ 80,000	29,000
Area of land (in Square Meters) | m²						3,600		3,600
Rent and parking expenses						$ 147,000	$ 460,000	$ 589,000	$ 867,000
Related party receivables						$ 720,000		$ 720,000
Services charges	$ 3,000
Percentage of shares outstanding	5.00%
Payments to grant amount	$ 120,000
Related party transaction, description	The research period is over 13 months, with two additional 12-month options to extend.
Description of pharma holdings			On January 28, 2021, Pharma Holdings partially exercised the Warrant and purchased 7.3 million shares of Rafael Pharmaceuticals’ Series D Preferred Stock for $9.1 million, of which $0.9 million was contributed by the holder of a minority interest in Pharma Holdings.
Percentage of total revenue						63.00%	62.00%	57.00%	59.00%
Acquired an additional membership interest				33.333%	33.333%
Aggregate of a membership interest				66.666%
RP finance LLC, description								The Company recognized approximately $0 and $96 thousand in earnings from its ownership interests of 37.5% in RP Finance for the three months ended January 31, 2022 and 2021, respectively, and a loss of $575 thousand and earnings of $192 thousand from its ownership interests of 37.5% in RP Finance for the six months ended January 31, 2022 and 2021, respectively. As of January 31, 2022, the equity method investment in RP Finance on the Company’s balance sheet was $0. The Company recorded a loss on related party receivables of $9.375 million related to amounts owed by RP Finance (see Note 5).
Common stock for consideration								$ (6,228,000)
Warrants percentage				20.00%
Exercise price (in Dollars per share) | $ / shares				$ 22.91
Ownership percentage		84.00%
Securities Purchase Agreement [Member]
Related Party Transactions (Details) [Line Items]
Shares purchased (in Shares) | shares				218,245
Common stock for consideration				$ 5,000,000
IDT Rafael Holdings, LLC [Member]
Related Party Transactions (Details) [Line Items]
Rent and parking expenses								485,000	$ 8,000
Rafael Pharmaceuticals [Member]
Related Party Transactions (Details) [Line Items]
Due from related parties						$ 0	$ 120,000	120,000	$ 240,000
Due from owed amount						$ 720,000		$ 720,000		$ 600,000
Levco Pharmaceuticals Ltd [Member]
Related Party Transactions (Details) [Line Items]
Payments to grant amount	$ 120,000
LipoMedix Pharmaceuticals, Ltd. [Member]
Related Party Transactions (Details) [Line Items]
Purchased shares (in Shares) | shares		15,975,000
Due from owed amount		$ 3,000,000
Outstanding loan balance		400,000
Accrued interest		21,800
Cash payment		$ 2,600,000
Noncontrolling interest percentage		16.00%
IDT Rafael Holdings, LLC [Member]
Related Party Transactions (Details) [Line Items]
Area of land (in Square Meters) | m²						80,000		80,000
Common Class B [Member] | IDT Rafael Holdings, LLC [Member]
Related Party Transactions (Details) [Line Items]
Purchased shares (in Shares) | shares										43,649
Shares issued (in Shares) | shares										87,298
Common stock issued for proceeds										$ 2,000,000

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