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Earnings Per Share (Details) - Schedule of weighted-average number of shares calculation of basic and diluted earnings per share - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Schedule of weighted-average number of shares calculation of basic and diluted earnings per share [Abstract]
Basic weighted-average number of shares	12,633	10,229	12,412	10,212
Effect of dilutive securities:
Stock options	698	371	472
Non-vested restricted Class B common stock	73	3	44
Deferred stock units	27	12	21
Diluted weighted-average number of shares	13,431	10,615	12,949	10,212

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

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-Publisher FASB
-Name Accounting Standards Codification
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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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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

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- Definition

This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).

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