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Equity Investments (Details 1) - Equity Method Investments [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2020 | Jan. 31, 2019
Equity Securities without Readily Determinable Fair Value [Line Items] |  |  |  |
Balance, beginning of period | $ 3,937 | $ 3,118 | $ 3,919 | $ 1,883
Adoption of change in accounting for equity investments |  |  |  | 1,213
Adjusted balance | 3,937 | 3,118 | 3,919 | 3,096
Adjustment for observable transactions involving a similar investment from the same issuer | 408 | (71) | 426 | (49)
Redemptions |  | (2) |  | (2)
Impairments |  |  |  |
Balance, end of the period | $ 4,345 | $ 3,045 | $ 4,345 | $ 3,045

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- Definition Equity securities without readily determinable fair value upward downward price adjustment annual amount. + References No definition available. + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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- Definition Amount of impairment loss on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117539-209714 + Details
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