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Summary of Significant Accounting Policies and Select Balance Sheet Information (Details 6) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Sep. 30, 2011
--- | --- | ---
Schedule of Intangible assets |  |
Gross Carrying Amount | $ 8,223 | $ 8,275
Accumulated Amortization | (3,793) | (3,076)
Net | 4,430 | 5,199
Customer lists [Member] |  |
Schedule of Intangible assets |  |
Weighted Average Original Life (Years) | 9 years | 9 years
Gross Carrying Amount | 4,857 | 4,857
Accumulated Amortization | (2,734) | (2,195)
Net | 2,123 | 2,662
Core technology [Member] |  |
Schedule of Intangible assets |  |
Weighted Average Original Life (Years) | 8 years | 8 years
Gross Carrying Amount | 530 | 530
Accumulated Amortization | (343) | (276)
Net | 187 | 254
Patents and other [Member] |  |
Schedule of Intangible assets |  |
Weighted Average Original Life (Years) | 16 years 9 months 18 days | 16 years 9 months 18 days
Gross Carrying Amount | 2,256 | 2,308
Accumulated Amortization | (716) | (605)
Net | 1,540 | 1,703
Definite-lived intangible assets [Member] |  |
Schedule of Intangible assets |  |
Gross Carrying Amount | 7,643 | 7,695
Accumulated Amortization | (3,793) | (3,076)
Net | 3,850 | 4,619
Trademarks [Member] |  |
Schedule of Intangible assets |  |
Gross Carrying Amount | 580 | 580
Net | $ 580 | $ 580

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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=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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