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Income taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Taxes Tables [Abstract]

Schedule of provision for income taxes

		2020				2019
Current tax expense			—				—
Deferred tax expense			—				—
Provision for income taxes			—				—

Schedule of statutory income tax rates

		2020				2019
Canadian federal and provincial recovery of income taxes using statutory rate of 27% (2019 – 27%,)			(3,630	)			(2,653	)
Change in unrecognized deductible temporary differences and unused tax losses			3,093				4,534
Permanent differences and other			537				(1,881	)
Provision for income taxes			—				—

Schedule of deferred tax assets

		2020				2019
Unused tax losses			222				37

Schedule of deferred tax liabilities

		2020				2019
Convertible debentures			—				—
Deferred cost			222				37
			222				37

Deductible temporary differences deferred tax assets

		2020				2019
Property and equipment			2,946				2,103
Right-of-use assets, net lease liability			438				388
Intangible assets			10,346				3,205
Debentures			433				595
Convertible debentures			1,679				530
Financing costs			1,496				1,509
Research and development expenditures			1,437				1,437
Other			2,245				—
			21,020				9,767

Deductible temporary unused tax losses

		2020				2019
Expires 2024			610				610
Expires 2025			936				1,101
Expires 2026			2,112				2,136
Expires 2027			4,863				5,203
Expires 2028			2,064				2,064
Expires 2029			4,237				4,679
Expires 2030			3,698				3,698
Expires 2031			1,470				1,614
Expires 2032			3,772				4,854
Expires 2033			6,065				11,006
Expires 2034			7,416				8,420
Expires 2035			9,680				11,168
Expires 2036			18,713				18,886
Expires 2037			20,450				20,449
Expires 2038			20,214				20,214
Expires 2039			24,977				14,557
Expires 2040			169				—
			131,446				130,659