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Discontinued Operations (Income (loss) from Discontinued Operations, Net of Tax) (Details) - Etherios, Inc. - Discontinued Operations, Disposed of by Sale - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Service revenue | $ 891 | $ 9,011
Cost of service | 713 | 8,101
Gross profit | 178 | 910
Operating expenses: |  |
Sales and marketing | 148 | 1,970
Research and development | 103 | 2,098
General and administrative | 43 | 1,208
Restructuring | 0 | 106
Total operating expenses | 294 | 5,382
Loss from discontinued operations, before income taxes | (116) | (4,472)
Gain on sale of discontinued operations, before income taxes | 2,870 | 0
Income (loss) from discontinued operations, before income taxes | 2,754 | (4,472)
Income tax benefit on discontinued operations | (476) | (1,627)
Income (loss) from discontinued operations, after income taxes | $ 3,230 | $ (2,845)

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