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Note 3 - Earnings Per Share (Tables) | 12 Months Ended
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Mar. 31, 2023
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Fiscal Year: |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Basic |  |  |  |  |  |  |  |  |  |  |  |
Net earnings |  | $ | 33,138 |  |  | $ | 51,007 |  |  | $ | 126,100 |
Deduct preferred stock dividends |  |  | 23 |  |  |  | 23 |  |  |  | 23 |
Undistributed earnings |  |  | 33,115 |  |  |  | 50,984 |  |  |  | 126,077 |
Earnings attributable to participating preferred shareholders |  |  | 109 |  |  |  | 196 |  |  |  | 493 |
Earnings attributable to common shareholders |  | $ | 33,006 |  |  | $ | 50,788 |  |  | $ | 125,584 |
Weighted average common shares outstanding |  |  | 7,796 |  |  |  | 8,707 |  |  |  | 9,088 |
Basic earnings per common share |  | $ | 4.23 |  |  | $ | 5.83 |  |  | $ | 13.82 |
Diluted |  |  |  |  |  |  |  |  |  |  |  |
Earnings attributable to common shareholders |  | $ | 33,006 |  |  | $ | 50,788 |  |  | $ | 125,584 |
Add dividends on convertible preferred stock |  |  | 20 |  |  |  | 20 |  |  |  | 20 |
Earnings attributable to common stock on a diluted basis |  | $ | 33,026 |  |  | $ | 50,808 |  |  | $ | 125,604 |
Weighted average common shares outstanding-basic |  |  | 7,796 |  |  |  | 8,707 |  |  |  | 9,088 |
Additional shares to be issued related to the equity compensation plan |  |  | 7 |  |  |  | 4 |  |  |  | 3 |
Additional shares to be issued under full conversion of preferred stock |  |  | 67 |  |  |  | 67 |  |  |  | 67 |
Total shares for diluted |  |  | 7,870 |  |  |  | 8,778 |  |  |  | 9,158 |
Diluted earnings per share |  | $ | 4.20 |  |  | $ | 5.79 |  |  | $ | 13.72 |

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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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