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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Calculation of Basic Earnings Per Share |
|  | (in thousands of dollars) |  |  | (in thousands of dollars) |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, 2019 |  |  | June 30, 2018 |  |  | June 30, 2019 |  |  | June 30, 2018 |
Earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 6,180 |  |  | $ | 4,114 |  |  | $ | 9,404 |  |  | $ | 7,881 |
Less: distributed earnings allocated to participating securities |  |  | (11 | ) |  |  | (13 | ) |  |  | (23 | ) |  |  | (25 | )
Less: undistributed earnings allocated to participating securities |  |  | (33 | ) |  |  | (28 | ) |  |  | (45 | ) |  |  | (54 | )
Net earnings available to common shareholders |  | $ | 6,136 |  |  | $ | 4,073 |  |  | $ | 9,336 |  |  | $ | 7,802 |
Weighted average common shares outstanding including participating securities |  |  | 11,106,367 |  |  |  | 9,265,898 |  |  |  | 11,098,149 |  |  |  | 9,265,928 |
Less: average unvested restricted shares |  |  | (77,304 | ) |  |  | (92,368 | ) |  |  | (80,343 | ) |  |  | (92,398 | )
Weighted average common shares outstanding |  |  | 11,029,063 |  |  |  | 9,173,530 |  |  |  | 11,017,806 |  |  |  | 9,173,530 |
Basic earnings and diluted per share |  | $ | 0.56 |  |  | $ | 0.44 |  |  | $ | 0.85 |  |  | $ | 0.85 |

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