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Share Capital (Antidilutive Securities) (Details) - $ / shares shares in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Earnings per share [line items] |  |  |
Share price (cad per share) | $ 7.18 |  | $ 6.44
Antidilutive securities |  | 1,420 | 11,870
Employee Stock Option1 [Member] |  |  |
Earnings per share [line items] |  |  |
Antidilutive securities |  | 1,420 | 6,655
Warrants [Member] |  |  |
Earnings per share [line items] |  |  |
Antidilutive securities |  | 0 | 5,215

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- Definition Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount1 + References No definition available. + Details
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- Definition Share Price1 + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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Period Type: |

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- Details
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Balance Type: |
Period Type: |