Income taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income taxes

Reconciliation of differences between taxes on income (loss) before income taxes

A reconciliation between tax expense and the product of accounting income multiplied by the basic income tax rate for the years ended December 31, 2019 and 2018 is as follows:

	2019			2018
Loss before income taxes	$	(55,285)		$	(23,111)
Basic income tax rate		26.30	%		26.67	%
Computed income tax recovery		(14,542)			(6,164)
Effect on income tax rate resulting from
Accounting charges not deductible for tax purposes		23			12
Non‑deductible share‑based compensation		317			169
Share issue costs		(2,739)
Unrecorded potential tax benefits of current period losses and other tax assets		16,829			6,183
Non‑refundable investment tax credit used (earned) in the year		—			(145)
Valuation allowance for prior year adjustment		77			—
Other		(21)			19
Income tax expense (recovery)/expense reported in the consolidated statements of loss and comprehensive loss	$	(56)		$	74

Schedule of deferred tax assets

The Company’s deferred tax assets consist of the following for the years ended December 31, 2019 and 2018:

	2019	2018
Net operating loss carry‑forwards	25,965	12,209
Tax basis of property and equipment in excess of carrying values	103	93
Federal SR&ED investment tax credits	535	273
Taxation of federal SR&ED investment tax credits	(142)	(72)
Research and development expenditures	2,686	1,791
Financing costs	2,103	138
Others	16	21
Total gross deferred tax assets	31,266	14,453
Valuation allowance	(31,266)	(14,453)
Net deferred tax assets	—	—