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Goodwill and Other Identifiable Intangible Assets, Net (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Sep. 30, 2013
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 80,921 | $ 80,136
Accumulated amortization | (72,612) | (70,408)
Net | 8,309 | 9,728
Purchased and Core Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 46,169 | 45,960
Accumulated amortization | (44,937) | (44,306)
Net | 1,232 | 1,654
License Agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 2,440 | 2,440
Accumulated amortization | (2,440) | (2,440)
Net | 0 | 0
Patents and Trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 11,755 | 11,322
Accumulated amortization | (9,546) | (9,000)
Net | 2,209 | 2,322
Customer Relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 19,097 | 18,954
Accumulated amortization | (15,017) | (14,130)
Net | 4,080 | 4,824
Non-compete Agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 1,100 | 1,100
Accumulated amortization | (312) | (202)
Net | 788 | 898
Order Backlog |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 360 | 360
Accumulated amortization | (360) | (330)
Net | $ 0 | $ 30

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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