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Income Taxes (Details 5) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 31, 2016 | Jul. 31, 2015 | Jul. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Balance as of August 1 | $ 17,428 | $ 18,419 | $ 17,178
Increases related to current year tax positions | 4,311 | 3,441 | 1,805
Prior year tax positions: |  |  |
Prior year increase | 1,120 | 599 | 2,997
Prior year decrease | 0 | 0 | (523)
Cash settlement | (412) | (225) | 0
Lapse of statute of limitations | (1,732) | (4,806) | (3,038)
Balance at July 31 | $ 20,715 | $ 17,428 | $ 18,419

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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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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + 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)(1) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
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