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Basis of presentation and significant accounting policies and practices (Tables) | 9 Months Ended
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Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Earnings Per Share | Computation and reconciliation of earnings per common share are as follows:
| For Three Months Ended September 30,
| 2023 |  | 2022
| Net Income |  | Shares |  | EPS |  | Net Income |  | Shares |  | EPS
Basic EPS: |  |  |  |  |  |  |  |  |  |  |
Net income | $ | 1,709 |  |  |  |  |  |  | $ | 2,295 |  |  |  |  |
Income allocated to RSUs | (9) |  |  |  |  |  |  | (11) |  |  |  |  |
Income allocated to common stock | $ | 1,700 |  |  | 908 |  |  | $ | 1.87 |  |  | $ | 2,284 |  |  | 913 |  |  | $ | 2.50 |
Dilutive effect of stock compensation plans |  |  | 8 |  |  |  |  |  |  | 10 |  |  |
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |
Net income | $ | 1,709 |  |  |  |  |  |  | $ | 2,295 |  |  |  |  |
Income allocated to RSUs | (10) |  |  |  |  |  |  | (11) |  |  |  |  |
Income allocated to common stock | $ | 1,699 |  |  | 916 |  |  | $ | 1.85 |  |  | $ | 2,284 |  |  | 923 |  |  | $ | 2.47 |
| For Nine Months Ended September 30,
| 2023 |  | 2022
| Net Income |  | Shares |  | EPS |  | Net Income |  | Shares |  | EPS
Basic EPS: |  |  |  |  |  |  |  |  |  |  |
Net income | $ | 5,139 |  |  |  |  |  |  | $ | 6,787 |  |  |  |  |
Income allocated to RSUs | (27) |  |  |  |  |  |  | (30) |  |  |  |  |
Income allocated to common stock | $ | 5,112 |  |  | 908 |  |  | $ | 5.63 |  |  | $ | 6,757 |  |  | 919 |  |  | $ | 7.35 |
Dilutive effect of stock compensation plans |  |  | 8 |  |  |  |  |  |  | 10 |  |  |
Diluted EPS: |  |  |  |  |  |  |  |  |  |  |
Net income | $ | 5,139 |  |  |  |  |  |  | $ | 6,787 |  |  |  |  |
Income allocated to RSUs | (26) |  |  |  |  |  |  | (30) |  |  |  |  |
Income allocated to common stock | $ | 5,113 |  |  | 916 |  |  | $ | 5.58 |  |  | $ | 6,757 |  |  | 929 |  |  | $ | 7.27 |

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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