Discontinued Operations (Income from Discontinued Operations, after Income Taxes) (Details) - Etherios, Inc. - Discontinued Operations, Disposed of by Sale $ in Thousands	3 Months Ended
	Dec. 31, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Service revenue	$ 891
Cost of service	713
Gross profit	178
Operating expenses:
Sales and marketing	148
Research and development	103
General and administrative	43
Total operating expenses	294
Loss from discontinued operations, before income taxes	(116)
Gain on sale of discontinued operations, before income taxes	2,912
Total income from discontinued operations, before income taxes	2,796
Income tax benefit on discontinued operations	(523)
Income from discontinued operations, after income taxes	$ 3,319