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Intangible Assets (Schedule of Intangible Assets Subject to Amortization) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Sep. 30, 2013
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Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 12,885 | $ 30,465
Accumulated Amortization | (10,738) | (18,853)
Net Carrying Value | 2,147 | 11,612
Purchased Technology |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 11,749 | 11,749
Accumulated Amortization | (9,727) | (9,489)
Net Carrying Value | 2,022 | 2,260
Trade Name |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 1,136 | 1,136
Accumulated Amortization | (1,011) | (967)
Net Carrying Value | 125 | 169
Supply Agreement |  |
Finite Lived Intangible Assets [Line Items] |  |
Gross Carrying Value |  | 17,580
Accumulated Amortization |  | (8,397)
Net Carrying Value |  | $ 9,183

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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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