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Note 20 - Regulatory Capital - Regulatory Capital (Details) $ in Thousands | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
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Parent Company [Member] |  |
Total Capital | $ 204,353 | $ 162,558
Total Capital (to risk-weighted assets) ratio | 0.144 | 0.132
Minimum amount of capital for adequacy purposes | $ 113,604 | $ 98,835
Minimum amount of capital for adequacy purposes, ratio | 0.080 | 0.080
Common equity Capital | $ 160,338 | $ 150,465
Common equity Capital ratio | 0.113 | 0.122
Minimum amount of Common equity Capital for adequacy purposes | $ 63,902 | $ 55,595
Minimum amount of Common equity Capital for adequacy purposes, ratio | 0.045 | 0.045
Tier 1 Capital | $ 164,838 | $ 150,465
Tier 1 Capital (to risk-weighted assets) ratio | 0.116 | 0.122
Minimum amount of Tier 1 Capital for adequacy purposes | $ 85,203 | $ 74,126
Minimum amount of Tier 1 Capital for adequacy purposes, ratio | 0.060 | 0.060
Tier 1 Capital | $ 164,838 | $ 150,465
Tier 1 Capital (to average assets) ratio | 0.074 | 0.083
Minimum amount of Tier 1 Capital for adequacy purposes | $ 89,415 | $ 72,281
Minimum amount of Tier 1 Capital for adequacy purposes, ratio | 0.040 | 0.040
ChoiceOne Bank [Member] |  |
Total Capital | $ 182,275 | $ 159,684
Total Capital (to risk-weighted assets) ratio | 0.129 | 0.129
Minimum amount of capital for adequacy purposes | $ 113,444 | $ 98,683
Minimum amount of capital for adequacy purposes, ratio | 0.080 | 0.080
Common equity Capital | $ 174,587 | $ 152,091
Common equity Capital ratio | 0.123 | 0.123
Minimum amount of Common equity Capital for adequacy purposes | $ 63,813 | $ 55,509
Minimum amount of Common equity Capital for adequacy purposes, ratio | 0.045 | 0.045
Tier 1 Capital | $ 174,587 | $ 152,091
Tier 1 Capital (to risk-weighted assets) ratio | 0.123 | 0.123
Minimum amount of Tier 1 Capital for adequacy purposes | $ 85,083 | $ 74,012
Minimum amount of Tier 1 Capital for adequacy purposes, ratio | 0.060 | 0.060
Tier 1 Capital | $ 174,587 | $ 152,091
Tier 1 Capital (to average assets) ratio | 0.078 | 0.084
Minimum amount of Tier 1 Capital for adequacy purposes | $ 89,289 | $ 72,208
Minimum amount of Tier 1 Capital for adequacy purposes, ratio | 0.040 | 0.040
Minimum Capital required to be well-capitalized | $ 141,806 | $ 123,353
Minimum Capital required to be well-capitalized, ratio | 0.100 | 0.100
Minimum Common equity Capital required to be well-capitalized | $ 92,174 | $ 80,180
Minimum Common equity Capital required to be well-capitalized, ratio | 0.065 | 0.065
Minimum Tier 1 Capital required to be well-capitalized | $ 113,444 | $ 98,683
Minimum Tier 1 Capital required to be well-capitalized, ratio | 0.080 | 0.080
Minimum Tier 1 Capital required to be well-capitalized | $ 111,611 | $ 90,259
Minimum Tier 1 Capital required to be well-capitalized, ratio | 0.050 | 0.050

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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 http://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826 + Details
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