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Share-based compensation (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure of terms and conditions of share-based payment arrangement [abstract]

Schedule of stock options granted

					Weighted average
		Number of options			exercise price
		#			C$
Outstanding as at December 31, 2018		485,159			74.53
Granted		1,363,322			20.68
Exercised		(82,094	)		10.02
Forfeited		(12,438	)		56.28
Cancelled		(299,006	)		115.80
Outstanding as at December 31, 2019		1,454,943			21.96
Exercisable as at December 31, 2019		1,200,242			21.24

					Weighted average
		Number of options			exercise price
		#			C$
Outstanding as at December 31, 2019		1,454,943			21.96
Granted		1,082,639			4.14
Exercised		(22,382	)		2.61
Cancelled		(822,137	)		31.65
Outstanding as at December 31, 2020		1,693,063			6.11
Exercisable as at December 31, 2020		1,528,186			6.13

					Weighted average
		Number of options			exercise price
		#			C$
Outstanding as at December 31, 2020		1,693,063			6.11
Granted		2,841,086			2.26
Forfeited		(47,500	)		4.83
Expired		(953,803	)		4.87
Cancelled		(307,987	)		9.85
Outstanding as at December 31, 2021		3,224,859			2.75
Exercisable as at December 31, 2021		3,197,601			2.72

Schedule of fair values of options granted using the Black-Scholes option pricing model

		2021			2020			2019
Grant date share price		C$1.96 - C$2.85			C$3.75 - C$9.54			C$6.45 - C$75.38
Exercise price		C$1.70 - C$4.25			C$3.68 - C$9.80			C$7.17 - C$75.38
Expected dividend yield		-			-			-
Risk free interest rate		0.34% - 1.10%			0.27% - 1.55%			1.24% - 1.90%
Expected life		2 - 6 years			4 - 9 years			5 years
Expected volatility		116% - 132%			120%			100%

Schedule of number and weighted average remaining contractual life of outstanding and exercisable share options

The following table is a summary of the Company's share options outstanding as at December 31, 2021:

	Options outstanding									Options exercisable
							Weighted average
							remaining contractual
	Exercise price			Number outstanding			life [years]			Exercise price			Number exercisable
	C$			#			#			C$			#
	1.70			154,953			3.46			1.70			154,953
	2.91			5,150			4.00			2.91			5,150
	2.25			2,559,995			2.42			2.25			2,559,995
	2.61			12,684			1.49			2.61			12,683
	3.75			10,500			3.92			3.75			6,500
	3.86			256,245			3.21			3.86			252,993
	4.42			99,503			0.71			4.42			99,502
	4.75			15,000			3.29			4.75			15,000
	5.43			16,265			1.49			5.43			16,264
	7.63			50,000			4.00			7.63			30,000
	10.65			3,731			1.49			10.65			3,730
	13.07			10,856			1.49			13.07			10,855
	13.47			1,418			1.49			13.47			1,418
	16.08			18,410			1.49			16.08			18,409
	17.89			4,178			1.49			17.89			4,178
	18.09			2,488			1.24			18.09			2,488
	50.25			3,483			2.28			50.25			3,483
	2.75			3,224,859			2.50			2.72			3,197,601

The following table is a summary of the Company's share options outstanding as at December 31, 2020:

	Options outstanding									Options exercisable
							Weighted average
							remaining contractual
	Exercise price			Number outstanding			life [years]			Exercise price			Number exercisable
	C$			#			#			C$			#
	2.61			12,683			2.49			2.61			12,683
	3.75			5,500			6.47			3.75			500
	3.86			872,139			4.08			3.86			864,139
	4.42			99,502			1.71			4.42			99,502
	4.75			110,000			4.29			4.75			77,500
	5.03			60,000			4.70			5.03			7,498
	5.43			16,264			2.49			5.43			16,264
	6.16			20,000			3.18			6.16			20,000
	7.17			199,005			3.83			7.17			199,005
	7.63			203,750			4.34			7.63			138,750
	9.54			15,000			4.06			9.54			13,125
	10.65			3,730			2.49			10.65			3,730
	13.07			10,855			2.49			13.07			10,855
	13.47			1,418			2.49			13.47			1,418
	16.08			18,409			2.49			16.08			18,409
	17.89			4,178			2.49			17.89			4,178
	18.09			17,413			2.21			18.09			17,413
	20.10			8,289			2.27			20.10			8,289
	47.24			1,493			3.37			47.24			1,493
	50.25			5,224			3.31			50.25			5,224
	52.26			498			3.21			52.26			498
	55.28			498			3.12			55.28			498
	59.30			498			2.96			59.30			498
	75.38			498			3.04			75.38			498
	86.43			1,244			2.87			86.43			1,244
	142.71			4,975			2.74			142.71			4,975
	6.11			1,693,063			3.88			6.13			1,528,186

The following table is a summary of the Company's share options outstanding as at December 31, 2019:

	Options outstanding									Options exercisable
							Weighted average
							remaining contractual
	Exercise price			Number outstanding			life [years]			Exercise price			Number exercisable
	C$			#			#			C$			#
	2.61			35,065			3.49			2.61			35,065
	4.42			99,502			2.71			4.42			99,502
	5.43			16,264			3.49			5.43			16,264
	10.65			3,730			3.49			10.65			3,730
	13.07			10,855			3.49			13.07			10,855
	13.47			1,418			3.49			13.47			1,418
	16.08			18,409			3.49			16.08			18,409
	17.89			4,178			3.49			17.89			4,178
	18.09			37,313			3.34			18.09			37,313
	20.10			493,363			4.72			20.10			493,363
	21.11			12,438			4.67			21.11			12,438
	24.12			9,950			4.59			24.12			6,219
	26.13			14,925			3.62			26.13			14,925
	40.20			29,851			4.45			40.20			22,388
	44.22			2,488			3.41			44.22			2,488
	47.24			1,493			4.37			47.24			1,493
	50.25			227,861			5.09			50.25			129,353
	52.26			498			4.21			52.26			498
	55.28			498			4.12			55.28			498
	59.30			498			3.96			59.30			498
	7.17			199,005			4.83			7.17			199,005
	75.38			498			4.04			75.38			498
	7.63			203,750			5.34			7.63			58,750
	86.43			1,244			3.88			86.43			1,244
	88.44			14,925			3.87			88.44			14,925
	120.60			9,950			3.71			120.60			9,950
	142.71			4,974			3.74			142.71			4,975
	21.96			1,454,943			4.59			21.24			1,200,242

Schedule of share-based compensation

		For the year ended December 31
		2021			2020			2019
		$			$			$
Share options		3,594,005			2,825,863			10,780,853
Warrants		98,513			-			-
Class B Common Shares issued for services		174,537			-			-
Class B Common Shares issued for compensation		3,576,875			5,226,148			1,302,077
		7,443,930			8,052,011			12,082,930