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Note 13 - Stock-based Compensation (Details Textual) - USD ($) | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 7,652,000 |
Salaries, Wages, and Benefits [Member] |  |
Share-Based Payment Arrangement, Expense | $ 793,000 | $ 639,000

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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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