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Long term obligations (Details Textual)
CAD in Millions, $ in Millions
3 Months Ended
Mar. 31, 2017
USD ($)
shares
Mar. 31, 2018
USD ($)
Mar. 31, 2018
CAD
Mar. 31, 2017
CAD
Debt Instrument [Line Items]        
Business Combination, Contingent Consideration, Liability $ 1.5     CAD 2
Supplemental Deferred Purchase Price Percentage 70.00%      
MediaMiser [Member]        
Debt Instrument [Line Items]        
Business Combination, Contingent Consideration, Liability $ 3.8     CAD 5
Supplemental Deferred Purchase Price Percentage 30.00%      
Stock Issued During Period, Shares, Acquisitions | shares 253,622      
MediaMiser [Member] | Scenario, Forecast [Member]        
Debt Instrument [Line Items]        
Business Combination, Contingent Consideration, Liability   $ 1.5 CAD 2  
Vendor Agreement [Member]        
Debt Instrument [Line Items]        
License Costs | $ $ 0.4