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Goodwill and Other Identifiable Intangible Assets, Net (Tables) | 3 Months Ended
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Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Amortizable Identifiable Intangible Assets | Amortizable identifiable intangible assets were (in thousands):
| December 31, 2015 |  | September 30, 2015
| Gross carrying amount |  | Accum. amort. |  | Net |  | Gross carrying amount |  | Accum. amort. |  | Net
Purchased and core technology | $ | 47,190 |  |  | $ | (45,345 | ) |  | $ | 1,845 |  |  | $ | 45,449 |  |  | $ | (45,424 | ) |  | $ | 25 |
License agreements | 18 |  |  | (4 | ) |  | 14 |  |  | 18 |  |  | (4 | ) |  | 14 |
Patents and trademarks | 11,491 |  |  | (10,550 | ) |  | 941 |  |  | 11,377 |  |  | (10,385 | ) |  | 992 |
Customer relationships | 17,827 |  |  | (15,566 | ) |  | 2,261 |  |  | 17,090 |  |  | (15,473 | ) |  | 1,617 |
Total | $ | 76,526 |  |  | $ | (71,465 | ) |  | $ | 5,061 |  |  | $ | 73,934 |  |  | $ | (71,286 | ) |  | $ | 2,648 |
Schedule of Estimated Future Amortization Expense Related to Identifiable Intangible Assets | Estimated amortization expense related to identifiable intangible assets for the remainder of fiscal 2016 and the five succeeding fiscal years is (in thousands):
2016 (nine months) | $ | 1,160 |
2017 | 963 |
2018 | 574 |
2019 | 449 |
2020 | 215 |
2021 | 69 |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill are (in thousands):
| Three months ended December 31,
| 2015 |  | 2014
Beginning balance, October 1 | $ | 100,183 |  |  | $ | 101,484 |
Acquisition of Bluenica Corporation | 11,020 |  |  | — |
Foreign currency translation adjustment | (959 | ) |  | (724 | )
Ending balance, December 31 | $ | 110,244 |  |  | $ | 100,760 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: 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=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: 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=26713463&loc=d3e16323-109275 + Details
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