2. Significant accounting policies - Fixed Assets Depreciation Rates (Details)	Dec. 31, 2016
Computer Equipment
Fixed Assets, Depreciation Rate	30.00%
Computer Software
Fixed Assets, Depreciation Rate	100.00%
Furniture and Equipment
Fixed Assets, Depreciation Rate	30.00%
Medical Equipment
Fixed Assets, Depreciation Rate	25.00%
Vehicles
Fixed Assets, Depreciation Rate	30.00%