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Note 11 - Income Taxes | 3 Months Ended
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Mar. 31, 2024
Notes to Financial Statements |
Income Tax Disclosure [Text Block] | 11. Income Taxes The effective tax rate for the first three months of 2024 was 10.8% compared to 16.8% for the first three months of 2023. The effective tax rate includes the impact of low-income housing and alternative energy investment tax credits. The Company’s tax returns are open for audit by the Internal Revenue Service back to 2020 and by the California Franchise Tax Board back to 2019. It is reasonably possible that unrecognized tax benefits could change significantly over the next twelve months. The Company does not expect that any such changes would have a material impact on its annual effective tax rate.

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