Discontinued Operations (Gain on Sale Subject to Working Capital Adjustments) (Details) - 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]
Net cash proceeds at closing		$ 2,866	$ 0
Etherios, Inc. | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received at closing	$ 4,000
Less: Employee related liabilities	(1,134)
Net cash proceeds at closing	2,866
Present value of receivable due on October 23, 2016	2,941
Present value of receivable due on October 23, 2017	1,922
Receivable for selling price adjustments	152
Total fair value of consideration received	7,881
Less:
Net assets of Etherios, Inc.	(3,383)
Facility abandonment costs	(856)
Transaction costs, primarily professional fees	(730)
Gain on sale of discontinued operations, before income taxes	$ 2,912	$ 2,912	$ 0