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Income Taxes (Details) - USD ($)	Jan. 31, 2017	Jul. 31, 2016
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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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

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Amount of interest expense accrued for an underpayment of income taxes.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (b)
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