Derivatives and Hedging Activities (Tables)	12 Months Ended
Jul. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Values of Derivative Instruments in Consolidated Balance Sheets	During the fiscal years ended July 31, 2018, 2017, and 2016, the Company recognized gains of $24, losses of $2,508, and gains of $2,162, respective

Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

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