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Acquisition (Details) - USD ($) $ in Thousands |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Oct. 05, 2015 | Jun. 30, 2016 | Sep. 30, 2015 | Jun. 30, 2015 | Sep. 30, 2014
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 109,880 | $ 100,183 | $ 100,583 | $ 101,484
Bluenica Corporation |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash paid at closing | $ 2,888 |  |  |  |
Earn-out payment installment period | 4 years |  |  |  |
Fair value of contingent consideration | $ 10,400 |  |  |  |
Acquisition costs |  | $ 100 |  |  |
Goodwill | $ 10,985 |  |  |  |
Weighted average use life of acquired intangibles | 5 years 7 months 13 days |  |  |  |
Purchased and Core Technology | Bluenica Corporation |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Useful life of finite lived intangibles | 5 years |  |  |  |
Customer Relationships | Bluenica Corporation |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Useful life of finite lived intangibles | 7 years |  |  |  |
Earn-out payments | Bluenica Corporation |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Earn-out payment maximum | $ 11,600 |  |  |  |
Additional earn-out payment | Bluenica Corporation |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Earn-out payment maximum | $ 3,500 |  |  |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
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