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Share Capital (Antidilutive Securities) (Details) shares in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 09, 2017 $ / shares | Dec. 31, 2018 $ / shares | Dec. 31, 2018 shares | Dec. 31, 2017 $ / shares shares
Earnings per share [line items] |  |  |  |
Share price (cad per share) | (per share) | $ 7.95 | $ 6.44 |  | $ 9.40
Antidilutive securities |  |  | 11,870 | 15,152
Employee Stock Option1 [Member] |  |  |  |
Earnings per share [line items] |  |  |  |
Antidilutive securities |  |  | 6,655 | 2,920
Warrants [Member] |  |  |  |
Earnings per share [line items] |  |  |  |
Antidilutive securities |  |  | 5,215 | 12,232

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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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- Details
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