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v3.21.1

Leases (Details Narrative) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 01, 2020 | Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
LeasesLineItems [Line Items] |  |  |  |  |
Operating lease liabilities | $ 0.6 |  |  |  |
Rafael Holdings Inc. [Member] |  |  |  |  |
LeasesLineItems [Line Items] |  |  |  |  |
Lease cost |  | $ 0.5 | $ 0.5 | $ 1.4 | $ 1.4
Newark NJ [Member] |  |  |  |  |
LeasesLineItems [Line Items] |  |  |  |  |
Lease expiration description |  |  |  | The Newark lease expires in April 2025 and the Israel lease expires in July 2025. |
Minimum [Member] |  |  |  |  |
LeasesLineItems [Line Items] |  |  |  |  |
Lease term |  | 1 year |  | 1 year |
Maximum [Member] |  |  |  |  |
LeasesLineItems [Line Items] |  |  |  |  |
Lease term |  | 5 years |  | 5 years |

X
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X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919359-209981 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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- Details
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