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Note 4 - Restrictions on Cash and Due from Banks (Details Textual) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Cash Reserve Deposit Required and Made | $ 0 | $ 0
Cash and Securities Segregated under Federal and Other Regulations | $ 25,500 | $ 101,000

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- Definition Amount of cash subject to withdrawal restrictions, restricted deposits held as compensating balances, and cash and securities segregated in compliance with regulations (such as cash deposited in a special reserve account for the exclusive benefit of customers). + References No definition available. + Details
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Period Type: | instant

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- Definition Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 210 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478482/942-210-50-1 + Details
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