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Note 1 - Summary of Significant Accounting Policies - Calculation of Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Numerators: |  |
Income from continuing operations | $ 107,932 | $ 58,191
Income from discontinued operations, net of tax | 750 | 2,540
Net income | $ 108,682 | $ 60,731
Denominator: |  |
Denominator for basic income per share – weighted-average shares (in shares) | 15,006 | 16,803
Effect of dilutive securities: |  |
Diluted weighted average shares outstanding (in shares) | 15,524 | 17,020
Basic income per share: |  |
Income from continuing operations (in dollars per share) | $ 7.19 | $ 3.46
Income from discontinued operations (in dollars per share) | 0.05 | 0.15
Net (loss) income per basic share (in dollars per share) | 7.24 | 3.61
Diluted income per share: |  |
Income from continuing operations (in dollars per share) | 6.95 | 3.42
Income from discontinued operations (in dollars per share) | 0.05 | 0.15
Diluted income (loss) per share (in dollars per share) | $ 7.00 | $ 3.57
Restricted Stock [Member] |  |
Effect of dilutive securities: |  |
Equivalent shares issuable upon conversion of unvested restricted shares (in shares) | 358 | 217
Share-Based Payment Arrangement, Option [Member] |  |
Effect of dilutive securities: |  |
Equivalent shares issuable upon conversion of unvested restricted shares (in shares) | 160 | 0

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