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Dividends (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Cash Dividends [Abstract] |
Dividends | Dividends declared in Canadian equivalent dollars during the year were as follows:
| 2017 |  | 2016
| Dividend |  | Dividend per share |  | Dividend |  | Dividend per share
Common shares | $ | 242,509 |  |  | $ | 0.6084 |  |  | $ | 149,158 |  |  | $ | 0.5452 |
Series A preferred shares | $ | 5,400 |  |  | $ | 1.1250 |  |  | $ | 5,400 |  |  | $ | 1.1250 |
Series D preferred shares | $ | 5,000 |  |  | $ | 1.2500 |  |  | $ | 5,000 |  |  | $ | 1.2500 |

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- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
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