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Capital Structure (Tables) | 12 Months Ended
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Dec. 31, 2019
Equity [Abstract] |
Summary of Authorized and Issued Share Capital | The following table provides a summary of the Company’s authorized and issued share capital as at December 31, 2019 and 2018:
|  | As at December 31, 2019 |  | At December 31, 2018
|  | Number |  | $ in Thousands |  | Number |  | $ in Thousands
Authorized share capital: |  |  |  |  |  |  |  |
Ordinary Shares $0.01 per share ( 2018 — 0.15144558¢ per share |  | 70,000,000 |  |  | 700 |  |  | 969,629,030 |  |  | 1,469 |
Non-Voting Shares 0.15144558¢ per share |  | — |  |  | — |  |  | 6,787,880 |  |  | 10 |
Preference Shares 0.15144558¢ per share |  | 30,000,000 |  |  | 45 |  |  | 100,000,000 |  |  | 152 |
Total authorized share capital |  |  |  | 745 |  |  |  |  | 1,631 |
Issued share capital: |  |  |  |  |  |  |  |
Issued ordinary shares $0.01 per share ( 2018 — 0.15144558¢ per share |  | 60,395,839 |  |  | 604 |  |  | 59,743,156 |  |  | 90 |
Issued 5.95% preference shares of 0.15144558¢ each with a liquidation preference of $25 per share |  | 11,000,000 |  |  | 17 |  |  | 11,000,000 |  |  | 17 |
Issued 5.625% preference shares of 0.15144558¢ each with a liquidation preference of $25 per share |  | 10,000,000 |  |  | 15 |  |  | 10,000,000 |  |  | 15 |
Issued 5.625% preference shares of 0.15144558¢ represented by depositary shares, each with a liquidation preference of $25 per share (1) |  | 10,000 |  |  | — |  |  | — |  |  | — |
Total issued share capital |  |  |  | 636 |  |  |  |  | 122 |
______________
(1) | Each depositary share represents a 1/1000 th interest in a share of the 5.625% preference shares.
Summary of Ordinary Shares | The following table summarizes transactions in the Company’s ordinary shares during the years ended December 31, 2019 and 2018:
|  | Number of Ordinary Shares
|  | 2019 |  | 2018
Ordinary shares of 0.015144558c per share |  |  |  |
Ordinary shares in issue at the beginning of the year |  | 59,743,156 |  |  | 59,474,085 |
Ordinary shares issued to employees under the 2013 share incentive plan and/or 2008 share purchase plan |  | 144,269 |  |  | 229,318 |
Ordinary shares issued to non-employee directors |  | 6,993 |  |  | 39,753 |
Ordinary shares canceled |  | (59,894,418 | ) |  | — |
Total ordinary shares of 0.015144558c per share in issue |  | — |  |  | 59,743,156 |
Ordinary shares of $0.01 per share |  |  |  |
New ordinary shares issued of $0.01 per share |  | 60,395,839 |  |  |
Ordinary shares issued at the end of the year |  | 60,395,839 |  |  |

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