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Note 18 - Income Taxes (Details Textual) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 3.6 | $ 1.8
Domestic Tax Authority [Member] |  |
Open Tax Year | 2019 2020 2021 2022 |
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] |  |
Open Tax Year | 2018 2019 2020 2021 2022 |

X
- Definition Tax year that remains open to examination under enacted tax laws, in YYYY format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 + Details
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X
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Details
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- Details
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- Details
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