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Income Taxes (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of July 31	$ 36,123	$ 27,537	$ 21,322
Increases related to current year tax positions	13,122	8,196	6,588
Prior year tax positions:
Increases recognized during the period	8,782	6,390	800
Decreases recognized during the period	(5,749)	(1,603)	(305)
Cash settlements during the period	(3,261)	(1,182)	(534)
Lapse of statute of limitations	(1,956)	(3,215)	(334)
Balance at July 31	$ 47,061	$ 36,123	$ 27,537

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Amount of unrecognized tax benefits.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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