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Stock-based Compensation, Equity Grants, and Warrants - Stock Options Outstanding, Vested and Unvested (Details) - shares shares in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2016 | Sep. 30, 2015 | Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |
Document Fiscal Year Focus | 2016 |  |
Vested and exercisable | 1,540 |  | 968
Unvested | 684 |  | 1,368
Option outstanding | 2,224 | 2,324 | 2,336

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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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