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Note 5 - Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2023
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings |  | $ | 27,775 |  |  | $ | 17,038 |  |  | $ | 42,347 |  |  | $ | 22,102 |
Less dividends declared: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A |  |  | 128 |  |  |  | 129 |  |  |  | 257 |  |  |  | 258 |
Class B |  |  | 742 |  |  |  | 726 |  |  |  | 1,490 |  |  |  | 1,453 |
Undistributed earnings |  | $ | 26,905 |  |  | $ | 16,183 |  |  | $ | 40,600 |  |  | $ | 20,391 |
Undistributed earnings allocation - basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A undistributed earnings |  | $ | 4,330 |  |  | $ | 2,664 |  |  | $ | 6,533 |  |  | $ | 3,356 |
Class B undistributed earnings |  |  | 22,575 |  |  |  | 13,519 |  |  |  | 34,067 |  |  |  | 17,035 |
Total undistributed earnings |  | $ | 26,905 |  |  | $ | 16,183 |  |  | $ | 40,600 |  |  | $ | 20,391 |
Net earnings allocation - basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A net earnings |  | $ | 4,458 |  |  | $ | 2,793 |  |  | $ | 6,790 |  |  | $ | 3,614 |
Class B net earnings |  |  | 23,317 |  |  |  | 14,245 |  |  |  | 35,557 |  |  |  | 18,488 |
Net earnings |  | $ | 27,775 |  |  | $ | 17,038 |  |  | $ | 42,347 |  |  | $ | 22,102 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A - basic and diluted |  |  | 2,142 |  |  |  | 2,144 |  |  |  | 2,142 |  |  |  | 2,145 |
Class B - basic and diluted |  |  | 10,634 |  |  |  | 10,362 |  |  |  | 10,636 |  |  |  | 10,368 |
Net earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A - basic and diluted |  | $ | 2.08 |  |  | $ | 1.30 |  |  | $ | 3.17 |  |  | $ | 1.68 |
Class B - basic and diluted |  | $ | 2.19 |  |  | $ | 1.37 |  |  | $ | 3.34 |  |  | $ | 1.78 |

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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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