Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Deferred income taxes (Schedule of Balance of Temporary Differences for Deferred Income Tax Asset Recognized) (Details)

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Deferred income taxes (Schedule of Balance of Temporary Differences for Deferred Income Tax Asset Recognized) (Details) - CAD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Major components of tax expense (income) [abstract]
Non-capital losses $ 77,389 $ 63,230
SR&ED expenditures 29,558 20,096
Non-refundable investment tax credits 5,536 3,832
Deductible share issuance costs 3,452 2,028
Long-term debt 7,925 7,612
Property and equipment $ (400) $ 725