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Description of Business and Summary of Significant Accounting Policies (Details Textual) $ in Millions | 6 Months Ended |
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Jan. 31, 2017 USD ($) | Jul. 31, 2016 USD ($)
Description Of Business and Summary Of Significant Accounting Policies [Line Items] |  |
Tax benefits realized upon ultimate settlement, Description | The second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement. |
Capitalized software costs | $ 53.5 | $ 49.4
Accumulated amortization expense | $ 28.6 | $ 20.9
Number of operating segments | 2 |
Number of reportable segment | 2 |

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- Definition For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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