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Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Leases (Details) [Line Items]
Lease cost		$ 4.8
Newark NJ [Member]
Leases (Details) [Line Items]
Lease term, description	The Newark lease expires in April 2025 and the Israel lease expires in July 2025
Rafael Holdings, Inc. [Member]
Leases (Details) [Line Items]
Lease cost	$ 1.9	$ 1.8
Accounting standards update 2016-02 [Member]
Leases (Details) [Line Items]
ASU 2016-02 Adoption	$ 12.4

X

- Definition

Description of lease term.

+ References

No definition available.

+ Details

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- References

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- Definition

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statement.

+ References

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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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- Details

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- Details

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