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Dividends | 12 Months Ended
--- | ---
Dec. 31, 2018
Disclosure Cash Dividends [Abstract] |
Dividends | Dividends All dividends of the Company are made on a discretionary basis as determined by the Board. The Company declares and pays the dividends on its common shares in U.S. dollars. Dividends declared during the year were as follows:
| 2018 |  | 2017
| Dividend |  | Dividend per share |  | Dividend |  | Dividend per share
Common shares | $ | 235,440 |  |  | $ | 0.5011 |  |  | $ | 185,915 |  |  | $ | 0.4660 |
Series A preferred shares | C$ | 5,400 |  |  | C$ | 1.1250 |  |  | C$ | 5,400 |  |  | C$ | 1.1250 |
Series D preferred shares | C$ | 5,000 |  |  | C$ | 1.2500 |  |  | C$ | 5,000 |  |  | C$ | 1.2500 |

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