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Note 15 - Regulatory Matters - Actual Capital Amounts and Ratios (Details) $ in Thousands | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Capital | $ 218,049 | $ 215,799
Capital to risk weighted assets | 0.14 | 0.141
Capital required for capital adequacy | $ 164,005 | $ 160,370
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Tier one risk based capital | $ 200,187 | $ 199,069
Tier one risk based capital to risk weighted assets | 0.128 | 0.13
Tier one risk based capital required for capital adequacy | $ 132,766 | $ 129,823
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one leverage capital | $ 200,187 | $ 199,069
Tier one leverage capital to average assets | 0.09 | 0.091
Tier one leverage capital required for capital adequacy | $ 88,992 | $ 87,392
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Common equity tier one capital | $ 200,187 | $ 199,069
Common equity tier one risk based capital to risk weighted assets | 0.128 | 0.13
Common equity tier one capital required for capital adequacy | $ 109,337 | $ 106,913
Common equity tier one risk based capital required for capital adequacy to risk weighted assets | 7.00% | 7.00%
Boone Bank and Trust [Member] |  |
Capital | $ 16,232 | $ 15,962
Capital to risk weighted assets | 0.136 | 0.129
Capital required for capital adequacy | $ 12,510 | $ 12,984
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 11,914 | $ 12,366
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 15,309 | $ 14,990
Tier one risk based capital to risk weighted assets | 0.128 | 0.121
Tier one risk based capital required for capital adequacy | $ 10,127 | $ 10,511
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one risk based capital required to be well capitalized | $ 9,532 | $ 9,893
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 15,309 | $ 14,990
Tier one leverage capital to average assets | 0.096 | 0.087
Tier one leverage capital required for capital adequacy | $ 6,393 | $ 6,868
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Tier one leverage capital required to be well capitalized | $ 7,991 | $ 8,585
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 15,309 | $ 14,990
Common equity tier one risk based capital to risk weighted assets | 0.128 | 0.121
Common equity tier one capital required for capital adequacy | $ 8,340 | $ 8,656
Common equity tier one risk based capital required for capital adequacy to risk weighted assets | 7.00% | 7.00%
Common equity tier one capital required to be well capitalized | $ 7,744 | $ 8,038
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
First National Bank [Member] | Also Conducts Business Out of 3 Full Service Offices in Des Moines Metro Area [Member] |  |
Capital | $ 112,057 | $ 110,887
Capital to risk weighted assets | 0.139 | 0.142
Capital required for capital adequacy | $ 84,863 | $ 82,089
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 80,822 | $ 78,180
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 102,634 | $ 101,976
Tier one risk based capital to risk weighted assets | 0.127 | 0.13
Tier one risk based capital required for capital adequacy | $ 68,699 | $ 66,453
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one risk based capital required to be well capitalized | $ 64,658 | $ 62,544
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 102,634 | $ 101,976
Tier one leverage capital to average assets | 0.088 | 0.089
Tier one leverage capital required for capital adequacy | $ 46,878 | $ 45,582
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Tier one leverage capital required to be well capitalized | $ 58,597 | $ 56,978
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 102,634 | $ 101,976
Common equity tier one risk based capital to risk weighted assets | 0.127 | 0.13
Common equity tier one capital required for capital adequacy | $ 56,576 | $ 54,726
Common equity tier one risk based capital required for capital adequacy to risk weighted assets | 7.00% |
Common equity tier one capital required to be well capitalized | $ 52,534 | $ 50,817
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
Iowa State Savings Bank [Member] |  |
Capital | $ 26,691 | $ 25,398
Capital to risk weighted assets | 0.157 | 0.155
Capital required for capital adequacy | $ 17,854 | $ 17,210
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 17,004 | $ 16,390
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 24,619 | $ 24,113
Tier one risk based capital to risk weighted assets | 0.145 | 0.147
Tier one risk based capital required for capital adequacy | $ 14,453 | $ 13,932
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one risk based capital required to be well capitalized | $ 13,603 | $ 13,112
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 24,619 | $ 24,113
Tier one leverage capital to average assets | 0.096 | 0.093
Tier one leverage capital required for capital adequacy | $ 10,234 | $ 10,423
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Tier one leverage capital required to be well capitalized | $ 12,792 | $ 13,029
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 24,619 | $ 24,113
Common equity tier one risk based capital to risk weighted assets | 0.145 | 0.147
Common equity tier one capital required for capital adequacy | $ 11,903 | $ 11,473
Common equity tier one risk based capital required for capital adequacy to risk weighted assets | 7.00% |
Common equity tier one capital required to be well capitalized | $ 11,052 | $ 10,654
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
Reliance State Bank [Member] | Conducts Business Out of Offices at Story City, Garner, and Kleme, Iowa [Member] |  |
Capital | $ 28,755 | $ 28,385
Capital to risk weighted assets | 0.119 | 0.124
Capital required for capital adequacy | $ 25,293 | $ 24,103
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 24,089 | $ 22,955
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 25,937 | $ 25,647
Tier one risk based capital to risk weighted assets | 0.108 | 0.112
Tier one risk based capital required for capital adequacy | $ 20,476 | $ 19,512
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one risk based capital required to be well capitalized | $ 19,271 | $ 18,364
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 25,937 | $ 25,647
Tier one leverage capital to average assets | 0.083 | 0.085
Tier one leverage capital required for capital adequacy | $ 12,464 | $ 12,001
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Tier one leverage capital required to be well capitalized | $ 15,580 | $ 15,001
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 25,937 | $ 25,647
Common equity tier one risk based capital to risk weighted assets | 0.108 | 0.112
Common equity tier one capital required for capital adequacy | $ 16,862 | $ 16,069
Common equity tier one risk based capital required for capital adequacy to risk weighted assets | 7.00% |
Common equity tier one capital required to be well capitalized | $ 15,658 | $ 14,921
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
State Bank and Trust [Member] |  |
Capital | $ 22,283 | $ 22,011
Capital to risk weighted assets | 0.16 | 0.147
Capital required for capital adequacy | $ 14,597 | $ 15,716
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 13,902 | $ 14,968
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 20,676 | $ 20,392
Tier one risk based capital to risk weighted assets | 0.149 | 0.136
Tier one risk based capital required for capital adequacy | $ 11,817 | $ 12,723
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one risk based capital required to be well capitalized | $ 11,122 | $ 11,974
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 20,676 | $ 20,392
Tier one leverage capital to average assets | 0.096 | 0.091
Tier one leverage capital required for capital adequacy | $ 8,573 | $ 8,932
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Tier one leverage capital required to be well capitalized | $ 10,717 | $ 11,165
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 20,676 | $ 20,392
Common equity tier one risk based capital to risk weighted assets | 0.149 | 0.136
Common equity tier one capital required for capital adequacy | $ 9,731 | $ 10,477
Common equity tier one risk based capital required for capital adequacy to risk weighted assets | 7.00% |
Common equity tier one capital required to be well capitalized | $ 9,036 | $ 9,729
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
United Bank and Trust [Member] |  |
Capital | $ 12,989 | $ 12,633
Capital to risk weighted assets | 0.161 | 0.151
Capital required for capital adequacy | $ 8,486 | $ 8,759
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 8,082 | $ 8,342
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 11,979 | $ 11,677
Tier one risk based capital to risk weighted assets | 0.148 | 0.14
Tier one risk based capital required for capital adequacy | $ 6,870 | $ 7,090
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one risk based capital required to be well capitalized | $ 6,466 | $ 6,673
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 11,979 | $ 11,677
Tier one leverage capital to average assets | 0.095 | 0.089
Tier one leverage capital required for capital adequacy | $ 5,039 | $ 5,274
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Tier one leverage capital required to be well capitalized | $ 6,299 | $ 6,592
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 11,979 | $ 11,677
Common equity tier one risk based capital to risk weighted assets | 0.148 | 0.14
Common equity tier one capital required for capital adequacy | $ 5,657 | $ 5,839
Common equity tier one risk based capital required for capital adequacy to risk weighted assets | 7.00% |
Common equity tier one capital required to be well capitalized | $ 5,253 | $ 5,422
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%

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