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Discontinued Operations (Gain on Sale Subject to Working Capital Adjustments) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 23, 2015
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Net cash proceeds       $ 2,849 $ 0
Etherios, Inc. | Discontinued Operations, Disposed of by Sale          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Gross proceeds $ 4,096        
Employee related liabilities (1,134)        
Working capital adjustment (113)        
Net cash proceeds 2,849        
Present value of receivable due on October 23, 2016 2,941        
Present value of receivable due on October 23, 2017 1,922        
Total fair value of consideration received 7,712        
Less:          
Net assets of Etherios (3,383)        
Facility abandonment costs (725)        
Transaction costs, primarily professional fees (734)        
Gain on sale of discontinued operations, before income taxes $ 2,870 $ 0 $ 0 $ 2,870 $ 0