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Other Operating Gain (Expense), Net (Details Narrative) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Dec. 21, 2020	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Payment Card Interchange Fee and Merchant Discount Antitrust Litigation [Member]
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Proceed from sale to third parties	$ 2.0
Straight Path [Member]
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Legal Fees		$ 0.3	$ 1.2	$ 2.0	$ 2.5
Unusual or Infrequent Item, or Both, Insurance Proceeds		$ 0.9	$ 1.4	$ 2.6	$ 2.2

X

- Definition

Proceed from sale to third parties.

+ References

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- References

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- Definition

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

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- Definition

Amount of insurance proceeds for an event or transaction that is unusual in nature or infrequent in occurrence, or both.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=114868883&loc=SL114871943-224233

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