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Summary of the main accounting policies: (Details 1)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Fixtures and fittings [member]    
Useful lives or depreciation rates, property, plant and equipment 10 to 20% 10 to 20%
Machinery [member]    
Useful lives or depreciation rates, property, plant and equipment 10 to 20% 10 to 20%
Computer equipment [member]    
Useful lives or depreciation rates, property, plant and equipment 33 to 20% 33 to 20%
Transportation equipment [Member]    
Useful lives or depreciation rates, property, plant and equipment 20 to 25% 20 to 25%
Improvements to leased premises [Member]    
Useful lives or depreciation rates, property, plant and equipment 10% 10%