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Note 20 - Regulatory Matters (Details Textual) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Banking Regulation, Capital Conservation Buffer, Capital Conserved, Minimum | 0.0250 | 0.0250
Capital Conservation Buffer Percentage, Maintained at Bank | 6.76% | 7.82%

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- Definition Represents the amount of capital conservation buffer, as a percentage, maintained at a bank. + References No definition available. + Details
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- Definition Minimum capital conservation buffer percentage required to avoid restriction on payout amount of eligible retained income as defined by regulatory framework. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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