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Note 2 - Acquisitions and Divestitures - Pro Forma Information (Details) - Surrey [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Total revenues (net interest income plus noninterest income) | $ 165,136 | $ 170,206
Net adjusted income available to the common shareholder | $ 50,282 | $ 55,415

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