Income Taxes (Income Before Provision for Income Taxes) (Details) - USD ($)	12 Months Ended
Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Income Tax Disclosure [Abstract]
U.S.	$ 28,813,000	$ 22,243,000	$ 23,732,000
Foreign	97,000	2,383,000	1,749,000
Income before provision for (benefit from) income taxes	$ 28,910,000	$ 24,626,000	$ 25,481,000

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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-Name Accounting Standards Codification
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-SubTopic 10
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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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