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Income Taxes (Details) - USD ($)	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Income Taxes (Details) [Line Items]
Income tax provisions, description	The Act contains several new or changed income tax provisions, including but not limited to the following: increased limitation threshold for determining deductible interest expense, class life changes to qualified improvements (in general, from 39 years to 15 years), and the ability to carry back net operating losses incurred from tax years 2018 through 2020 up to the five preceding tax years.
Income tax subject to examination, description	The Company currently remains subject to examinations of its U.S. tax returns as follows: U.S. federal tax return for fiscal 2018 to fiscal 2020, state and local tax returns generally for fiscal 2018 to fiscal 2020 and foreign tax returns generally for fiscal 2019 to fiscal 2020.
U.S. Federal Net Operating Loss [Member]
Income Taxes (Details) [Line Items]
Net operating loss carryforwards	$ 0	$ 5,600,000
U.S. State Net Operating Loss [Member]
Income Taxes (Details) [Line Items]
Net operating loss carryforwards	5,300,000	5,900,000
Norwegian Net Operating Loss [Member]
Income Taxes (Details) [Line Items]
Net operating loss carryforwards	$ 201,000	$ 433,000

X

- Definition

A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319

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- Definition

A description of the limitations on the use of all operating loss carryforwards available to reduce future taxable income.

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