Share capital (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure of classes of share capital [abstract]

Weighted average stock options

					Weighted
			Range		average
			of		remaining
			exercise		contractual
	Number		price		life (in years)
Outstanding, December 31, 2017		5,710,000	$	1.75		7.39
Expired / Cancelled		-		-		-
Not vested		30,000		3.43		3.85
Outstanding, September 30, 2018		5,740,000	$	1.76		6.62
Options exercisable		5,710,000	$	1.75		6.64

Stock-based compensation

	Three months				Nine months
	ended September 30,				ended September 30,
Employee expenses	2018		2017		2018		2017
Stock options and stock compensation granted in:
2015		828,876		1,222,498		2,749,645		4,069,246
2016 and 2017		–		1,083,375		–		1,118,975
2018		341,821		–		341,821		–
Total stock-based compensation expense recognized	$	1,170,697	$	2,305,873	$	3,091,466	$	5,188,221

Disaggregated stock based compensation in statements of operations and comprehensive loss

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Stock-based compensation pertaining to general and administrative	$	728,438	$	1,694,624	$	1,688,822	$	3,153,598
Stock-based compensation pertaining to research and development		442,259		611,249		1,402,644		2,034,623
Total	$	1,170,697	$	2,305,873	$	3,091,466	$	5,188,221