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Goodwill and other Identifiable Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Amortizable Identifiable Intangible Assets | Amortizable identifiable intangible assets, net as of September 30, 2014 and 2013 are comprised of the following (in thousands):
| September 30, 2014 |  | September 30, 2013
| Gross carrying amount |  | Accum. amort. |  | Net |  | Gross carrying amount |  | Accum. amort. |  | Net
Purchased and core technology | $ | 45,952 |  |  | $ | (45,162 | ) |  | $ | 790 |  |  | $ | 45,960 |  |  | $ | (44,306 | ) |  | $ | 1,654 |
License agreements | 2,440 |  |  | (2,440 | ) |  | — |  |  | 2,440 |  |  | (2,440 | ) |  | — |
Patents and trademarks | 11,667 |  |  | (9,799 | ) |  | 1,868 |  |  | 11,322 |  |  | (9,000 | ) |  | 2,322 |
Customer relationships | 18,894 |  |  | (15,445 | ) |  | 3,449 |  |  | 18,954 |  |  | (14,130 | ) |  | 4,824 |
Non-compete agreements | 1,100 |  |  | (422 | ) |  | 678 |  |  | 1,100 |  |  | (202 | ) |  | 898 |
Order backlog | 360 |  |  | (360 | ) |  | — |  |  | 360 |  |  | (330 | ) |  | 30 |
Total | $ | 80,413 |  |  | $ | (73,628 | ) |  | $ | 6,785 |  |  | $ | 80,136 |  |  | $ | (70,408 | ) |  | $ | 9,728 |
Schedule of Amortization Expense | Amortization expense for fiscal years 2014, 2013 and 2012 is as follows (in thousands):
Fiscal year | Total
2014 | $ | 3,589 |
2013 | $ | 4,416 |
2012 | $ | 4,476 |
Schedule of Estimated Amortization Expense Related to Identifiable Intangible Assets | Estimated amortization expense for the next five years is as follows (in thousands):
Fiscal year | Total
2015 | $ | 3,053 |
2016 | $ | 1,795 |
2017 | $ | 795 |
2018 | $ | 482 |
2019 | $ | 438 |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill were (in thousands):
| Fiscal years ended September 30,
| 2014 |  | 2013
Beginning balance, October 1 | $ | 103,569 |  |  | $ | 86,209 |
Acquisition of Etherios, Inc. | — |  |  | 17,282 |
Foreign currency translation adjustment | (171 | ) |  | 78 |
Ending balance, September 30 | $ | 103,398 |  |  | $ | 103,569 |

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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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