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Note 5 - Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2024
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |
|  | March 31, |
|  | 2024 |  |  | 2023 |
Numerator: |  |  |  |  |  |  |  |
Net earnings |  | $ | 15,874 |  |  | $ | 14,572 |
Less dividends declared: |  |  |  |  |  |  |  |
Class A |  |  | 129 |  |  |  | 128 |
Class B |  |  | 747 |  |  |  | 747 |
Undistributed earnings |  | $ | 14,998 |  |  | $ | 13,697 |
Undistributed earnings allocation: |  |  |  |  |  |  |  |
Class A undistributed earnings |  | $ | 2,416 |  |  | $ | 2,203 |
Class B undistributed earnings |  |  | 12,582 |  |  |  | 11,494 |
Total undistributed earnings |  | $ | 14,998 |  |  | $ | 13,697 |
Net earnings allocation: |  |  |  |  |  |  |  |
Class A net earnings |  | $ | 2,545 |  |  | $ | 2,331 |
Class B net earnings |  |  | 13,329 |  |  |  | 12,241 |
Net earnings |  | $ | 15,874 |  |  | $ | 14,572 |
Denominator: |  |  |  |  |  |  |  |
Weighted-average shares outstanding: |  |  |  |  |  |  |  |
Class A |  |  | 2,139 |  |  |  | 2,142 |
Class B |  |  | 10,610 |  |  |  | 10,639 |
Net earnings per share: |  |  |  |  |  |  |  |
Class A |  | $ | 1.19 |  |  | $ | 1.09 |
Class B |  | $ | 1.26 |  |  | $ | 1.15 |

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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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