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Income Taxes (Details) - USD ($) | Jan. 31, 2017 | Jul. 31, 2016
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Income Tax Contingency [Line Items] |  |
Unrecognized tax benefits | $ 9,068,000 | $ 9,171,000
Interest accrued relating to income taxes | 97,000 | 63,000
Unrecognized tax benefits that would positively impact our effective tax rate, if recognized | 8,084,000 | 8,261,000
Non-current income taxes payable |  |
Income Tax Contingency [Line Items] |  |
Unrecognized tax benefits | 3,012,000 | 2,992,000
Included in the non-current deferred tax liabilities (as an offset to the associated deferred tax asset) |  |
Income Tax Contingency [Line Items] |  |
Unrecognized tax benefits | $ 6,056,000 | $ 6,179,000

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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