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Acquisitions (Details)
6 Months Ended 14 Months Ended 0 Months Ended 6 Months Ended
Jun. 30, 2014
USD ($)
Jun. 30, 2014
USD ($)
May 11, 2013
Headland Media Limited
USD ($)
May 11, 2013
Headland Media Limited
GBP (£)
Jun. 30, 2013
Headland Media Limited
USD ($)
Jul. 31, 2013
Headland Media Limited
Post closing adjustment
USD ($)
Jun. 30, 2014
Videotel
USD ($)
Jun. 30, 2014
Videotel
GBP (£)
Business Acquisition [Line Items]                
Business Combination, Contingent Consideration, Liability     $ 24,169,000 £ 15,576,000   $ 169,000 $ 424,000 £ 249,000
Foreign currency exchange rate, translation     1.5517       1.7028  
Business combination, consideration transferred, percentage held in escrow     10.00% 10.00%        
Business combination, consideration transferred, period escrow held     18 months 18 months        
Service revenue since acquisition 7,079,000 15,879,000            
Business Combination, Pro Forma Information [Abstract]                
Pro forma net revenues         87,887,000      
Pro forma net income         $ 3,704,000      
Basic pro forma net income per share         $ 0.25      
Diluted pro forma net income per share         $ 0.24