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Note 12 - Regulatory Capital (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
(Dollars in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Minimum Required To Be |
|  |  |  |  |  |  |  |  |  | Minimum Required For |  |  | Well Capitalized Under Prompt |
|  | Actual |  |  | Capital Adequacy Purposes |  |  | Corrective Action Regulations |
December 31, 2022 |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital to risk-weighted assets |  | $ | 161.3 |  |  |  | 10.1 | % |  | $ | 71.6 |  |  |  | 4.5 | % |  | $ | 103.4 |  |  |  | 6.5 | %
Tier 1 capital to risk-weighted assets |  | $ | 161.3 |  |  |  | 10.1 | % |  | $ | 95.5 |  |  |  | 6.0 | % |  | $ | 127.3 |  |  |  | 8.0 | %
Total capital to risk-weighted assets |  | $ | 174.2 |  |  |  | 10.9 | % |  | $ | 127.3 |  |  |  | 8.0 | % |  | $ | 159.1 |  |  |  | 10.0 | %
Tier 1 capital to adjusted average assets |  | $ | 161.3 |  |  |  | 7.7 | % |  | $ | 84.3 |  |  |  | 4.0 | % |  | $ | 105.4 |  |  |  | 5.0 | %
(Dollars in millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Minimum Required To Be |
|  |  |  |  |  |  |  |  |  | Minimum Required For |  |  | Well Capitalized Under Prompt |
|  | Actual |  |  | Capital Adequacy Purposes |  |  | Corrective Action Regulations |
At December 31, 2021 |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |
Common equity tier 1 capital to risk-weighted assets |  | $ | 133.7 |  |  |  | 12.6 | % |  | $ | 47.8 |  |  |  | 4.5 | % |  | $ | 69.0 |  |  |  | 6.5 | %
Tier 1 capital to risk-weighted assets |  | $ | 133.7 |  |  |  | 12.6 | % |  | $ | 63.7 |  |  |  | 6.0 | % |  | $ | 85.0 |  |  |  | 8.0 | %
Total capital to risk-weighted assets |  | $ | 147.0 |  |  |  | 13.9 | % |  | $ | 85.0 |  |  |  | 8.0 | % |  | $ | 106.2 |  |  |  | 10.0 | %
Tier 1 capital to adjusted average assets |  | $ | 133.7 |  |  |  | 8.4 | % |  | $ | 64.1 |  |  |  | 4.0 | % |  | $ | 80.1 |  |  |  | 5.0 | %

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826 Reference 2: 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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