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Description of Business and Summary of Significant Accounting Policies (Details) - Schedule of weighted-average number of shares used in the calculation of basic and diluted earnings per share - shares	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Schedule of weighted-average number of shares used in the calculation of basic and diluted earnings per share [Abstract]
Basic weighted-average number of shares	13,156,000	11,126,000
Stock options	784,000
Non-vested restricted Class B common stock	66,000
Deferred stock units	32,000
Diluted weighted-average number of shares	14,038,000	11,126,000

X

- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1828-109256

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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X

- Definition

Number of additional shares included in diluted EPS for potentially dilutive effect of nonvested equity-based payment award containing forfeitable rights to dividends or dividend equivalents, whether paid or unpaid.

+ References

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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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X

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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X

- Definition

Number of additional shares included in diluted EPS for potentially dilutive effect of deferred stock units.

+ References

No definition available.

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- References

No definition available.

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