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

Share capital (Schedule of Share Capital) (Details)

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Share capital (Schedule of Share Capital) (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of classes of share capital [line items]
Balance $ 4,317 $ 6,343
Stock options exercised 95 391
Warrants exercised 61 4,889
Balance 6,448 4,317
Share Capital [Member]
Disclosure of classes of share capital [line items]
Balance $ 90,152 $ 70,113
Issued and outstanding Begning Balance, shares 45,106,401 40,319,941
Issued for cash, net of issuance costs $ 26,957 $ 12,895
Issued for cash, net of issuance costs, shares 5,404,855 2,246,094
Stock options exercised $ 353 $ 1,444
Stock options exercised, shares 105,196 480,754
DSUs redeemed $ 220
DSUs redeemed, shares 29,713
Warrants exercised $ 82 $ 5,480
Warrants exercised, shares 14,423 2,029,899
Balance $ 117,544 $ 90,152
Issued and outstanding Ending Balance, shares 50,630,875 45,106,401