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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share | The following table presents the components of basic and diluted earnings per share (in thousands, except per share amounts):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Net earnings attributable to Kirby |  | $ | 28,457 |  |  | $ | 10,190 |  |  | $ | 45,891 |  |  | $ | 6,815 |
Undistributed earnings allocated to restricted shares |  |  | (10 | ) |  |  | (8 | ) |  |  | (11 | ) |  |  | (6 | )
Earnings available to Kirby common stockholders – basic |  |  | 28,447 |  |  |  | 10,182 |  |  |  | 45,880 |  |  |  | 6,809 |
Undistributed earnings allocated to restricted shares |  |  | 10 |  |  |  | 8 |  |  |  | 11 |  |  |  | 6 |
Undistributed earnings reallocated to restricted shares |  |  | (10 | ) |  |  | (8 | ) |  |  | (11 | ) |  |  | (6 | )
Earnings available to Kirby common stockholders – diluted |  | $ | 28,447 |  |  | $ | 10,182 |  |  | $ | 45,880 |  |  | $ | 6,809 |
Shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common stock issued and outstanding |  |  | 60,222 |  |  |  | 60,101 |  |  |  | 60,202 |  |  |  | 60,088 |
Weighted average unvested restricted stock |  |  | (20 | ) |  |  | (48 | ) |  |  | (14 | ) |  |  | (53 | )
Weighted average common stock outstanding – basic |  |  | 60,202 |  |  |  | 60,053 |  |  |  | 60,188 |  |  |  | 60,035 |
Dilutive effect of stock options and restricted stock units |  |  | 265 |  |  |  | 221 |  |  |  | 277 |  |  |  | 185 |
Weighted average common stock outstanding – diluted |  |  | 60,467 |  |  |  | 60,274 |  |  |  | 60,465 |  |  |  | 60,220 |
Net earnings per share attributable to Kirby common stockholders: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.47 |  |  | $ | 0.17 |  |  | $ | 0.76 |  |  | $ | 0.11 |
Diluted |  | $ | 0.47 |  |  | $ | 0.17 |  |  | $ | 0.76 |  |  | $ | 0.11 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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