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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 |  | 3 Months Ended
--- | --- | ---
Oct. 23, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Service revenue |  | $ 891 | $ 1,505
Cost of service |  | 713 | 2,140
Gross profit (loss) |  | 178 | (635)
Operating expenses: |  |  |
Sales and marketing |  | 148 | 557
Research and development |  | 103 | 479
General and administrative |  | 43 | 413
Total operating expenses |  | 294 | 1,449
Loss from discontinued operations, before income taxes |  | (116) | (2,084)
Gain on sale of discontinued operations, before income taxes | $ 2,912 | 2,912 | 0
Total income (loss) from discontinued operations, before income taxes |  | 2,796 | (2,084)
Income tax benefit on discontinued operations |  | (523) | (727)
Income (loss) from discontinued operations, after income taxes |  | $ 3,319 | $ (1,357)

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