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Intangible Assets (Tables) | 6 Months Ended
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Mar. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets Subject to Amortization | Intangible assets balances, subject to amortization, at March 31, 2015 and September 30, 2014 consisted of the following (in thousands):
| March 31, 2015 |  |  | September 30, 2014 |
| Gross |  |  |  |  |  |  | Net |  |  | Gross |  |  |  |  |  |  | Net |
| Carrying |  |  | Accumulated |  |  | Carrying |  |  | Carrying |  |  | Accumulated |  |  | Carrying |
| Value |  |  | Amortization |  |  | Value |  |  | Value |  |  | Amortization |  |  | Value |
Purchased technology | $ | 11,749 |  |  | $ | (10,165 | ) |  | $ | 1,584 |  |  | $ | 11,749 |  |  | $ | (9,918 | ) |  | $ | 1,831 |
Trade name |  | 1,136 |  |  |  | (1,113 | ) |  |  | 23 |  |  |  | 1,136 |  |  |  | (1,063 | ) |  |  | 73 |
Total | $ | 12,885 |  |  | $ | (11,278 | ) |  | $ | 1,607 |  |  | $ | 12,885 |  |  | $ | (10,981 | ) |  | $ | 1,904 |

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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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