Consolidated Statements of Comprehensive Income Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2017
Statement of Comprehensive Income (Parenthetical) [Abstract]
Translation Adjustment Functional to Reporting Currency, Tax Benefit (Expense)	$ 0	$ 1,981	$ (2,831)

Amount of income tax expense (benefit) from translating foreign currency financial statements into the reporting currency.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration