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Goodwill and Other Identifiable Intangible Assets, Net (Tables) | 6 Months Ended
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Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Amortizable Identifiable Intangible Assets | Amortizable identifiable intangible assets were (in thousands):
| March 31, 2014 |  | September 30, 2013
| Gross carrying amount |  | Accum. amort. |  | Net |  | Gross carrying amount |  | Accum. amort. |  | Net
Purchased and core technology | $ | 46,169 |  |  | $ | (44,937 | ) |  | $ | 1,232 |  |  | $ | 45,960 |  |  | $ | (44,306 | ) |  | $ | 1,654 |
License agreements | 2,440 |  |  | (2,440 | ) |  | — |  |  | 2,440 |  |  | (2,440 | ) |  | — |
Patents and trademarks | 11,755 |  |  | (9,546 | ) |  | 2,209 |  |  | 11,322 |  |  | (9,000 | ) |  | 2,322 |
Customer relationships | 19,097 |  |  | (15,017 | ) |  | 4,080 |  |  | 18,954 |  |  | (14,130 | ) |  | 4,824 |
Non-compete agreements | 1,100 |  |  | (312 | ) |  | 788 |  |  | 1,100 |  |  | (202 | ) |  | 898 |
Order backlog | 360 |  |  | (360 | ) |  | — |  |  | 360 |  |  | (330 | ) |  | 30 |
Total | $ | 80,921 |  |  | $ | (72,612 | ) |  | $ | 8,309 |  |  | $ | 80,136 |  |  | $ | (70,408 | ) |  | $ | 9,728 |
Schedule of Estimated Amortization Expense Related to Identifiable Intangible Assets | Estimated amortization expense related to identifiable intangible assets for the remainder of fiscal 2014 and the five succeeding fiscal years is (in thousands):
2014 six months | $ | 1,704 |
2015 | 3,078 |
2016 | 1,545 |
2017 | 839 |
2018 | 482 |
2019 | 438 |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill are (in thousands):
| Six months ended March 31,
| 2014 |  | 2013
Beginning balance, October 1 | $ | 103,569 |  |  | $ | 86,209 |
Acquisition of Etherios, Inc. | — |  |  | 17,120 |
Foreign currency translation adjustment | 476 |  |  | 62 |
Ending balance, December 31 | $ | 104,045 |  |  | $ | 103,391 |

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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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- 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 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 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=26713463&loc=d3e16323-109275 + 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=14024403&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=14024403&loc=d3e13854-109267 + Details
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