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Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jul. 31, 2020

Accounting Policies [Abstract]

Schedule of weighted-average number of shares used in the calculation of basic and diluted earnings per share

Year ended July 31 (in thousands)		2020				2019
Basic weighted-average number of shares			26,278				25,293
Effect of dilutive securities:
Stock options			1				—
Non-vested restricted Class B common stock			162				15
Diluted weighted-average number of shares			26,441				25,308

Schedule of outstanding stock options excluded from the calculation of diluted earnings per share

Year ended July 31 (in thousands)		2020				2019
Shares excluded from the calculation of diluted earnings per share			1,138				1,204

Schedule of changes in allowance for doubtful accounts

Year ended July 31 (in thousands)		Balance at beginning of year				Additions charged to costs and expenses				Deductions (1)				Balance at end of year
2020
Reserves deducted from accounts receivable:
Allowance for doubtful accounts		$	5,444			$	3,109			$	(2,468	)		$	6,085
2019
Reserves deducted from accounts receivable:
Allowance for doubtful accounts		$	5,358			$	2,028			$	(1,942	)		$	5,444

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Schedule of changes in allowance for doubtful accounts.

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Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
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Tabular disclosure of the effect of income (loss) on an entity's diluted earnings per share.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
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