Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Income Tax Recovery

Income tax recovery varies from the amounts that would be computed by applying the expected Canadian and provincial statutory income tax rate of 27% (2018 – 27% ) to loss before income taxes as shown in the following table:

	2019			2018
Computed recoveries at Canadian federal and    provincial tax rates	$	(11,237	)	$	(9,314	)
Change in valuation allowance		11,148			10,472
Investment tax credits earned		(1,522	)		(1,567	)
Tax attributes expired/utilized		678			911
Non-deductible expenditures		477			(472	)
Other		433			(54	)
Income tax recovery	$	(23	)	$	(24	)

Schedule of Net Deferred Income Tax Assets

The significant components of the Company’s net deferred income tax assets are as follows:

	2019			2018
Deferred income tax assets
Scientific research and experimental development pool	$	27,531		$	26,572
Investment tax credits		24,384			23,808
Non-capital losses		23,603			22,035
Depreciable assets		5,983			5,710
Deferred financing fees		972			1,303
Deferred revenue		8,223			—
Other		347			203
Less - valuation allowance		(90,805	)		(79,526	)
Net deferred income tax assets	$	238		$	105