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Note 13 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Balance | $ 4,150,000 |  |
Deferred Tax Assets [Member] |  |  |
Balance | 5,649,000 | $ 4,754,000 | $ 5,455,000
Additions based on tax positions related to the current year | 835,000 | 1,454,000 | 636,000
Additions (reductions) for tax positions of prior years | (1,380,000) | (198,000) | (1,097,000)
Reductions for statute of limitation expirations | (232,000) | (361,000) | (240,000)
Balance | 4,872,000 | 5,649,000 | 4,754,000
Liability for Unrecognized Tax Benefits [Member] |  |  |
Balance | 9,253,000 | 8,505,000 | 8,902,000
Additions based on tax positions related to the current year | 835,000 | 1,454,000 | 636,000
Additions (reductions) for tax positions of prior years | (1,097,000) | 324,000 | (273,000)
Reductions for statute of limitation expirations | (592,000) | (1,030,000) | (760,000)
Balance | 8,399,000 | 9,253,000 | 8,505,000
Liability for Interest and Penalties [Member] |  |  |
Balance | 3,438,000 | 2,678,000 | 2,290,000
Additions based on tax positions related to the current year | 0 | 0 | 0
Additions (reductions) for tax positions of prior years | 859,000 | 1,583,000 | 900,000
Reductions for statute of limitation expirations | (572,000) | (823,000) | (512,000)
Balance | 3,725,000 | 3,438,000 | 2,678,000
Total Liability [Member] |  |  |
Balance | 12,691,000 | 11,183,000 | 11,192,000
Additions based on tax positions related to the current year | 835,000 | 1,454,000 | 636,000
Additions (reductions) for tax positions of prior years | (238,000) | 1,907,000 | 627,000
Reductions for statute of limitation expirations | (1,164,000) | (1,853,000) | (1,272,000)
Balance | $ 12,124,000 | $ 12,691,000 | $ 11,183,000

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 217 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-217 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10B -Publisher FASB -URI https://asc.fasb.org/1943274/2147482525/740-10-45-10B + Details
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