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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the computation of the basic and diluted earnings per share (in thousands, except per share data):
| Three months ended March 31, |  |
| 2020 |  | 2021 |  |  |  |
Numerator for basic and diluted earnings per share: |  |  |  |  |  |  |
Net income (loss) | $ | (4,197) |  |  | $ | 12,933 |  |  |  |  |
Less: Loss (earnings) allocated to unvested restricted stock | 13 |  |  | (27) |  |  |  |  |
Income (loss) attributable to common stockholders | $ | (4,184) |  |  | $ | 12,906 |  |  |  |  |
Denominator: |  |  |  |  |  |  |
Denominator for basic earnings per common share - weighted average shares outstanding | 17,805 |  |  | 17,965 |  |  |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock options | — |  |  | 234 |  |  |  |  |
Denominator for diluted earnings per common share - weighted average shares outstanding | 17,805 |  |  | 18,199 |  |  |  |  |
Basic earnings (loss) per common share: | $ | (0.23) |  |  | $ | 0.72 |  |  |  |  |
Diluted earnings (loss) per common share: | $ | (0.23) |  |  | $ | 0.71 |  |  |  |  |

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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 http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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