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Employee Benefit Plans - Schedule of Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands | Jul. 31, 2018 | Jul. 31, 2017 | Jul. 31, 2016
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Retirement Benefits [Abstract] |  |  |
Current liability | $ 377 | $ 449 |
Non-current liability | 2,643 | 2,941 |
Defined Benefit Plan, Benefit Obligation | $ 3,020 | $ 3,390 | $ 3,800

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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