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v3.3.1.900

Shares - Voting common shares (Details) CAD / shares in Units, CAD in Thousands | 12 Months Ended
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Dec. 31, 2015 CAD CAD / shares shares | Dec. 31, 2014 CAD CAD / shares shares | Dec. 31, 2013 CAD CAD / shares shares | Dec. 31, 2013 $ / shares
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Beginning balance, issued and outstanding (shares) |  | 34,923,916 | 34,746,236 | 36,251,006 |
Beginning balance, common share outstanding net of treasury shares (in shares) |  | 34,334,024 | 34,746,236 | 36,251,006 |
Issued upon exercise of stock options (shares) |  |  | 385,880 | 295,230 |
Settlement of certain equity classified stock-based compensation (shares) |  | 20,403 |  |  |
Retired through share purchase programs (shares) |  | (1,803,715) | (500,000) | (1,800,000) |
Ending balance, issued and outstanding (in shares) |  | 33,150,281 | 34,923,916 | 34,746,236 |
Ending balance, common share outstanding net of treasury shares (in shares) |  | 31,893,478 | 34,334,024 | 34,746,236 |
Earnings Per Share [Abstract] |  |  |  |  |
Net loss from continuing operations | CAD |  | CAD (7,470) | CAD (697) | CAD (18,047) |
Net loss (income) from discontinued operations | CAD |  | 0 | (472) | 87,231 |
Net (loss) income | CAD |  | CAD (7,470) | CAD (1,169) | CAD 69,184 |
Weighted average number of shares outstanding, basic |  |  |  |  |
Weighted average number of basic common shares (in shares) |  | 32,758,088 | 35,014,418 | 36,269,996 |
Dilutive effect of stock options and treasury shares (in shares) |  | 0 | 0 | 342,957 |
Weighted average number of diluted common shares (in shares) |  | 32,758,088 | 35,014,418 | 36,612,953 |
Basic per share information |  |  |  |  |
Net loss from continuing operations (in CAD per share) | CAD / shares |  | CAD (0.23) | CAD (0.02) | CAD (0.50) |
Net loss (income) from discontinued operations (in CAD per share) | CAD / shares |  | 0.00 | (0.01) | 2.41 |
Net (loss) income - diluted (in CAD per share) | CAD / shares |  | (0.23) | (0.03) | 1.91 |
Diluted per share information |  |  |  |  |
Net loss from continuing operations (in CAD per share) | (per share) |  | (0.23) | (0.02) |  | $ (0.50)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share | (per share) |  | 0.00 | (0.01) | 2.39 | 2.39
Net (loss) income (in CAD per share) | (per share) |  | CAD (0.23) | CAD (0.03) | CAD 1.89 | $ 1.89
Share option plan |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issued upon exercise of stock options (shares) | [1] | 30,080 | 385,880 | 295,230 |
Senior executive stock option plan |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Issued upon exercise of stock options (shares) |  |  | 291,800 |  |
Treasury shares |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Beginning balance, issued and outstanding (shares) |  | 589,892 |  |  |
Purchase of treasury shares for settlement of certain equity classified stock-based compensation |  | (687,314) | (589,892) |  |
Settlement of certain equity classified stock-based compensation (shares) |  | 20,403 |  |  |
Ending balance, issued and outstanding (in shares) |  | 1,256,803 | 589,892 |  |
[1] | All stock options exercised resulted in new common shares being issued (note 17(a))

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