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Note 12 - Regulatory and Operational Matters - Regulatory Capital Amounts and Ratios (Details) - Parent Company [Member] | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Total Capital (to Risk Weighted Assets) Actual Amount |  | $ 95,094,000 | $ 93,923
Total Capital (to Risk Weighted Assets) Actual Ratio |  | 0.0994 | 0.0986
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Amount |  | $ 86,133,000 | $ 85,773
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio | [1] | 0.0900 | 0.0900
[1] | Leverage Capital Ratio greater than 9% is considered well-capitalized under the CBLR Framework.

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- Definition Amount of total capital 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 https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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- Definition Amount of minimum total risk-based capital categorized as well capitalized as defined by regulatory framework for prompt corrective action. + 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 https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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