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Share Based Compensation - Narrative (Details) $ / shares in Units, $ in Millions |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 05, 2020 USD ($) installment $ / shares shares | Feb. 01, 2020 shares | Mar. 01, 2017 | Mar. 31, 2020 USD ($) $ / shares shares | Mar. 31, 2019 USD ($) | Jan. 22, 2020 $ / shares | Dec. 31, 2019 $ / shares shares
Restricted Share Rights Awards |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Unrecognized compensation expenses | $ |  |  |  | $ 3.5 |  |  |
Weighted average period over which options will be recognized |  |  |  | 1 year 4 months 24 days |  |  |
Share-based compensation expense | $ |  |  |  | $ 1.9 | $ 1.6 |  |
Share-based compensation expense, capitalized | $ |  |  |  | $ 0.3 | 0.2 |  |
Granted (in shares) |  |  |  | 224,678 |  |  |
Restricted share rights outstanding (in shares) |  |  |  | 689,184 |  |  | 479,144
Weighted average grant date fair value (in dollars per shares) | $ / shares |  |  |  | $ 15.50 |  |  | $ 15.90
Restricted Share Rights Awards | Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  | 1 year |  |  |
Restricted Share Rights Awards | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |  |
Restricted Performance Share Units Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period |  |  | 3 years | 3 years |  |  |
Unrecognized compensation expenses | $ |  |  |  | $ 6.9 |  |  |
Weighted average period over which options will be recognized |  |  |  | 2 years 4 months 13 days |  |  |
Share-based compensation expense | $ |  |  |  | $ 0.6 | 2.7 |  |
Share-based compensation expense, capitalized | $ |  |  |  | $ 0.1 | $ 0.4 |  |
Common shares issued for share based compensation (in shares) |  | 121,897 |  |  |  |  |
Dividends payable (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.19 |
Executive Officer | Restricted Share Rights Awards |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Granted (in shares) | 183,758 |  |  |  |  |  |
Number of restricted share right will get settled for common share (in shares) | 1 |  |  |  |  |  |
Voluntary termination of employment age limit | 57 |  |  |  |  |  |
Accumulated service period for voluntary termination | 15 years |  |  |  |  |  |
Performance earning potential | 200.00% |  |  |  |  |  |
Restricted share rights outstanding (in shares) | 316,306 |  |  |  |  |  |
Intrinsic value of awards | $ | $ 4.6 |  |  |  |  |  |
Weighted average grant date fair value (in dollars per shares) | $ / shares | $ 14.66 |  |  |  |  |  |
Executive Officer | Restricted Share Rights Awards | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting period | 3 years |  |  |  |  |  |
Executive Officer | Restricted Performance Share Units Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Granted (in shares) |  |  |  | 319,600 |  |  |
Restricted share rights outstanding (in shares) |  |  |  | 715,965 |  |  | 396,365
Non Officer Employees | Restricted Share Rights Awards |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Granted (in shares) | 40,920 |  |  |  |  |  |
Number of vesting installments | installment | 3 |  |  |  |  |  |
Vesting acceleration period | 1 year |  |  |  |  |  |

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