Operating lease liability (Narrative) (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2019 CAD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2018 CAD ($)	Jan. 01, 2019 USD ($)	Jan. 01, 2019 CAD ($)
Operating Leases, Lease Income [Abstract]
Operating Lease, Right-of-Use Asset	$ 218,657				$ 217,755	$ 297,074
Operating lease liability incurred interest	$ 6,679	$ 8,879