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Note 13 - Regulatory Matters - Actual Capital Amounts and Ratios (Details) $ in Thousands | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Capital | $ 219,188 | $ 218,049
Capital to risk weighted assets | 0.142 | 0.14
Capital required for capital adequacy | $ 162,579 | $ 164,005
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Tier one risk based capital | $ 200,610 | $ 200,187
Tier one risk based capital to risk weighted assets | 0.13 | 0.128
Tier one risk based capital required for capital adequacy | $ 131,611 | $ 132,766
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one leverage capital | $ 200,610 | $ 200,187
Tier one leverage capital to average assets | 0.093 | 0.09
Tier one leverage capital required for capital adequacy | $ 86,434 | $ 88,992
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Common equity tier one capital | $ 200,610 | $ 200,187
Common equity tier one risk based capital to risk weighted assets | 0.13 | 0.128
Common equity tier one capital required for capital adequacy | $ 108,386 | $ 109,337
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 | $ 16,332 | $ 16,232
Capital to risk weighted assets | 0.13 | 0.136
Capital required for capital adequacy | $ 13,174 | $ 12,510
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 12,547 | $ 11,914
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 15,283 | $ 15,309
Tier one risk based capital to risk weighted assets | 0.122 | 0.128
Tier one risk based capital required for capital adequacy | $ 10,665 | $ 10,127
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 | $ 10,038 | $ 9,532
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 15,283 | $ 15,309
Tier one leverage capital to average assets | 0.092 | 0.096
Tier one leverage capital required for capital adequacy | $ 6,637 | $ 6,393
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 | $ 8,296 | $ 7,991
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 15,283 | $ 15,309
Common equity tier one risk based capital to risk weighted assets | 0.122 | 0.128
Common equity tier one capital required for capital adequacy | $ 8,783 | $ 8,340
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 | $ 8,156 | $ 7,744
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 | $ 112,001 | $ 112,057
Capital to risk weighted assets | 0.142 | 0.139
Capital required for capital adequacy | $ 82,712 | $ 84,863
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 78,774 | $ 80,822
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 102,863 | $ 102,634
Tier one risk based capital to risk weighted assets | 0.131 | 0.127
Tier one risk based capital required for capital adequacy | $ 66,958 | $ 68,699
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 | $ 63,019 | $ 64,658
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 102,863 | $ 102,634
Tier one leverage capital to average assets | 0.093 | 0.088
Tier one leverage capital required for capital adequacy | $ 44,333 | $ 46,878
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 | $ 55,416 | $ 58,597
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 102,863 | $ 102,634
Common equity tier one risk based capital to risk weighted assets | 0.131 | 0.127
Common equity tier one capital required for capital adequacy | $ 55,142 | $ 56,576
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 | $ 51,203 | $ 52,534
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
Iowa State Savings Bank [Member] |  |
Capital | $ 27,061 | $ 26,691
Capital to risk weighted assets | 0.157 | 0.157
Capital required for capital adequacy | $ 18,155 | $ 17,854
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 17,290 | $ 17,004
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 24,899 | $ 24,619
Tier one risk based capital to risk weighted assets | 0.144 | 0.145
Tier one risk based capital required for capital adequacy | $ 14,697 | $ 14,453
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 | $ 13,832 | $ 13,603
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 24,899 | $ 24,619
Tier one leverage capital to average assets | 0.098 | 0.096
Tier one leverage capital required for capital adequacy | $ 10,162 | $ 10,234
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 | $ 12,702 | $ 12,792
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 24,899 | $ 24,619
Common equity tier one risk based capital to risk weighted assets | 0.144 | 0.145
Common equity tier one capital required for capital adequacy | $ 12,103 | $ 11,903
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 | $ 11,239 | $ 11,052
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 | $ 28,874 | $ 28,755
Capital to risk weighted assets | 0.123 | 0.119
Capital required for capital adequacy | $ 24,589 | $ 25,293
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 23,419 | $ 24,089
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 25,946 | $ 25,937
Tier one risk based capital to risk weighted assets | 0.111 | 0.108
Tier one risk based capital required for capital adequacy | $ 19,906 | $ 20,476
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 | $ 18,735 | $ 19,271
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 25,946 | $ 25,937
Tier one leverage capital to average assets | 0.087 | 0.083
Tier one leverage capital required for capital adequacy | $ 11,987 | $ 12,464
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 | $ 14,984 | $ 15,580
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 25,946 | $ 25,937
Common equity tier one risk based capital to risk weighted assets | 0.111 | 0.108
Common equity tier one capital required for capital adequacy | $ 16,393 | $ 16,862
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 | $ 15,222 | $ 15,658
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
State Bank and Trust [Member] |  |
Capital | $ 22,183 | $ 22,283
Capital to risk weighted assets | 0.155 | 0.16
Capital required for capital adequacy | $ 14,984 | $ 14,597
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 14,271 | $ 13,902
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 20,394 | $ 20,676
Tier one risk based capital to risk weighted assets | 0.143 | 0.149
Tier one risk based capital required for capital adequacy | $ 12,130 | $ 11,817
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 | $ 11,417 | $ 11,122
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 20,394 | $ 20,676
Tier one leverage capital to average assets | 0.099 | 0.096
Tier one leverage capital required for capital adequacy | $ 8,203 | $ 8,573
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 | $ 10,254 | $ 10,717
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 20,394 | $ 20,676
Common equity tier one risk based capital to risk weighted assets | 0.143 | 0.149
Common equity tier one capital required for capital adequacy | $ 9,990 | $ 9,731
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 | $ 9,276 | $ 9,036
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
United Bank and Trust [Member] |  |
Capital | $ 13,155 | $ 12,989
Capital to risk weighted assets | 0.157 | 0.161
Capital required for capital adequacy | $ 8,820 | $ 8,486
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 8,400 | $ 8,082
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 12,105 | $ 11,979
Tier one risk based capital to risk weighted assets | 0.144 | 0.148
Tier one risk based capital required for capital adequacy | $ 7,140 | $ 6,870
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 | $ 6,720 | $ 6,466
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 12,105 | $ 11,979
Tier one leverage capital to average assets | 0.099 | 0.095
Tier one leverage capital required for capital adequacy | $ 4,903 | $ 5,039
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 | $ 6,129 | $ 6,299
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 12,105 | $ 11,979
Common equity tier one risk based capital to risk weighted assets | 0.144 | 0.148
Common equity tier one capital required for capital adequacy | $ 5,880 | $ 5,657
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 | $ 5,460 | $ 5,253
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%

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