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Office Relocation (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Segment Reporting Information [Line Items]          
Proceeds from lease termination agreement $ 1,500        
Income from lease termination   $ (11) $ 6 $ 1,490 $ 27
Accelerated depreciation   400   $ 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   $ 200   $ 400