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Office Relocation (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 28, 2015
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Segment Reporting Information [Line Items]          
Proceeds from lease termination agreement $ 1,500        
Income from lease termination   $ 25 $ (4) $ 1,515 $ 23
Accelerated depreciation   0   $ 800  
Term of lease       10 years  
Minimum rental payments due in next twelve months   $ 400   $ 400  
Percentage increase in lease payment   2.50%   2.50%  
Unified Communications [Member]          
Segment Reporting Information [Line Items]          
Accelerated deferred rent   $ 0   $ 400