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Note 6 - Share-based Compensation - Share-based Compensation Expense and the Related Tax Benefit (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Share-based compensation expense | $ 1,285 | $ 1,103 | $ 2,905 | $ 3,523
Stock Options and SARs [Member] |  |  |  |
Share-based compensation expense | 289 | 319 | 784 | 1,018
Restricted Stock [Member] |  |  |  |
Share-based compensation expense | 582 | 599 | 1,550 | 1,956
Performance Shares [Member] |  |  |  |
Share-based compensation expense | $ 414 | $ 185 | $ 571 | $ 549

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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