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Note 2 - Income Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
(in thousands except per share data) |  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Numerators: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 13,356 |  |  | $ | 49,961 |  |  | $ | 41,984 |  |  | $ | 96,654 |
Income from discontinued operations |  |  | 150 |  |  |  | 525 |  |  |  | 450 |  |  |  | 525 |
Net income |  | $ | 13,506 |  |  | $ | 50,486 |  |  | $ | 42,434 |  |  | $ | 97,179 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic income per share – weighted-average shares |  |  | 12,947 |  |  |  | 14,405 |  |  |  | 13,082 |  |  |  | 15,495 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equivalent shares issuable upon conversion of unvested restricted shares |  |  | 254 |  |  |  | 305 |  |  |  | 247 |  |  |  | 271 |
Equivalent shares issuable upon conversion of unvested employee stock options |  |  | 478 |  |  |  | 182 |  |  |  | 411 |  |  |  | 109 |
Denominator for diluted income per share adjusted weighted-average shares and assumed conversions |  |  | 13,679 |  |  |  | 14,892 |  |  |  | 13,740 |  |  |  | 15,875 |
Basic income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 1.03 |  |  | $ | 3.47 |  |  | $ | 3.21 |  |  | $ | 6.24 |
Income from discontinued operations |  |  | 0.01 |  |  |  | 0.04 |  |  |  | 0.03 |  |  |  | 0.03 |
Net income per share(1) |  | $ | 1.04 |  |  | $ | 3.50 |  |  | $ | 3.24 |  |  | $ | 6.27 |
Diluted income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.98 |  |  | $ | 3.36 |  |  | $ | 3.06 |  |  | $ | 6.09 |
Income from discontinued operations |  |  | 0.01 |  |  |  | 0.04 |  |  |  | 0.03 |  |  |  | 0.03 |
Net income per share |  | $ | 0.99 |  |  | $ | 3.39 |  |  | $ | 3.09 |  |  | $ | 6.12 |

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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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