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Long-term obligations (Details Textual)
$ in Millions, $ in Millions
1 Months Ended
Mar. 31, 2017
USD ($)
shares
Sep. 30, 2016
Mar. 31, 2018
USD ($)
Mar. 31, 2018
CAD ($)
Mar. 31, 2017
CAD ($)
Debt Instrument [Line Items]          
Supplemental Deferred Purchase Price Percentage 70.00% 70.00%      
Stock Issued During Period, Shares, Acquisitions | shares 253,622        
MediaMiser [Member]          
Debt Instrument [Line Items]          
Business Combination, Contingent Consideration, Liability $ 3.8       $ 5
Supplemental Deferred Purchase Price Percentage 30.00%        
MediaMiser [Member] | Scenario, Forecast [Member]          
Debt Instrument [Line Items]          
Business Combination, Contingent Consideration, Liability     $ 1.5 $ 2  
Vendor Agreement [Member]          
Debt Instrument [Line Items]          
License Costs | $ $ 0.4