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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2020
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, 2020 |  |  | June 30, 2019 |  |  | June 30, 2020 |  |  | June 30, 2019 |
Earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 4,804 |  |  | $ | 6,180 |  |  | $ | 8,909 |  |  | $ | 9,404 |
Less: distributed earnings allocated to participating securities |  |  | (13 | ) |  |  | (11 | ) |  |  | (26 | ) |  |  | (23 | )
Less: undistributed earnings allocated to participating securities |  |  | (22 | ) |  |  | (33 | ) |  |  | (40 | ) |  |  | (45 | )
Net earnings available to common shareholders |  | $ | 4,769 |  |  | $ | 6,136 |  |  | $ | 8,843 |  |  | $ | 9,336 |
Weighted average common shares outstanding including participating securities |  |  | 11,129,341 |  |  |  | 11,106,367 |  |  |  | 11,132,105 |  |  |  | 11,098,149 |
Less: average unvested restricted shares |  |  | (80,062 | ) |  |  | (77,304 | ) |  |  | (82,397 | ) |  |  | (80,343 | )
Weighted average common shares outstanding |  |  | 11,049,279 |  |  |  | 11,029,063 |  |  |  | 11,049,708 |  |  |  | 11,017,806 |
Basic and diluted earnings per share |  | $ | 0.43 |  |  | $ | 0.56 |  |  | $ | 0.80 |  |  | $ | 0.85 |

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- Definition Tabular disclosure of the effect of income (loss) on basic earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=120380238&loc=d3e4984-109258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1278-109256 + Details
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