Contributed surplus (Tables)

12 Months Ended

Dec. 31, 2020

Contributed surplus

Reconciliation of share based compensation - options

	December 31, 2020			December 31, 2019
		Weighted			Weighted
	Number	average		Number	average
	of stock	exercise		of stock	exercise
	options	price		options	price
Outstanding, beginning of year	2,998,168	$	1.36	2,670,000	$	1.17
Granted	797,500		1.89	385,000		2.63
Exercised	—		—	(53,332)		1.02
Cancelled	(113,168)		1.50	(3,500)		1.00
Outstanding, end of year	3,682,500	$	1.47	2,998,168	$	1.36

Reconciliation of broker warrants

	December 31, 2020			December 31, 2019
		Weighted			Weighted
	Number	average		Number	average
	of broker	exercise		of broker	exercise
	warrants	price		warrants	price
Outstanding, beginning of year	1,068,186	$	2.22	503,646	$	2.00
Granted	—		—	564,540		2.41
Expired	(503,646)		2.00	—		—
Outstanding, end of year	564,540	$	2.41	1,068,186	$	2.22