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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Calculation of Basic Earnings Per Share |
|  | (in thousands of dollars) |
|  | Three Months Ended |
|  | March 31, 2021 |  |  | March 31, 2020 |
Earnings per share |  |  |  |  |  |  |  |
Net income |  | $ | 4,909 |  |  | $ | 4,105 |
Less: distributed earnings allocated to participating securities |  |  | (15 | ) |  |  | (13 | )
Less: undistributed earnings allocated to participating securities |  |  | (23 | ) |  |  | (18 | )
Net earnings available to common shareholders |  | $ | 4,871 |  |  | $ | 4,074 |
Weighted average common shares outstanding including participating securities |  |  | 11,197,012 |  |  |  | 11,134,870 |
Less: average unvested restricted shares |  |  | (86,595 | ) |  |  | (84,732 | )
Weighted average common shares outstanding |  |  | 11,110,417 |  |  |  | 11,050,138 |
Basic and diluted earnings per share |  | $ | 0.44 |  |  | $ | 0.37 |

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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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