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Note 13 - Regulatory Matters - Actual Capital Amounts and Ratios (Details) $ in Thousands | Mar. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
--- | --- | ---
Capital | $ 221,903 | $ 219,750
Capital to risk weighted assets | 0.145 | 0.143
Capital required for capital adequacy | $ 161,009 | $ 161,155
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Tier one risk based capital | $ 202,987 | $ 201,749
Tier one risk based capital to risk weighted assets | 0.132 | 0.131
Tier one risk based capital required for capital adequacy | $ 130,340 | $ 130,459
Tier one risk based capital required for capital adequacy to risk weighted assets | 8.50% | 8.50%
Tier one leverage capital | $ 202,987 | $ 201,749
Tier one leverage capital to average assets | 0.094 | 0.092
Tier one leverage capital required for capital adequacy | $ 86,629 | $ 87,421
Tier one leverage capital required for capital adequacy to risk weighted assets | 0.04 | 0.04
Common equity tier one capital | $ 202,987 | $ 201,749
Common equity tier one risk based capital to risk weighted assets | 0.132 | 0.131
Common equity tier one capital required for capital adequacy | $ 107,339 | $ 107,436
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 | $ 16,449 | $ 16,446
Capital to risk weighted assets | 0.13 | 0.135
Capital required for capital adequacy | $ 13,239 | $ 12,809
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 12,609 | $ 12,199
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 15,399 | $ 15,404
Tier one risk based capital to risk weighted assets | 0.122 | 0.126
Tier one risk based capital required for capital adequacy | $ 10,717 | $ 10,369
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 | $ 10,087 | $ 9,759
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 15,399 | $ 15,404
Tier one leverage capital to average assets | 0.092 | 0.091
Tier one leverage capital required for capital adequacy | $ 6,717 | $ 6,743
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 | $ 8,396 | $ 8,429
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 15,399 | $ 15,404
Common equity tier one risk based capital to risk weighted assets | 0.122 | 0.126
Common equity tier one capital required for capital adequacy | $ 8,826 | $ 8,540
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 | $ 8,196 | $ 7,930
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 | $ 113,232 | $ 112,663
Capital to risk weighted assets | 0.147 | 0.146
Capital required for capital adequacy | $ 80,994 | $ 81,211
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 77,137 | $ 77,344
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 103,584 | $ 103,707
Tier one risk based capital to risk weighted assets | 0.134 | 0.134
Tier one risk based capital required for capital adequacy | $ 65,567 | $ 65,742
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 | $ 61,710 | $ 61,875
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 103,584 | $ 103,707
Tier one leverage capital to average assets | 0.094 | 0.093
Tier one leverage capital required for capital adequacy | $ 44,270 | $ 44,595
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 | $ 55,338 | $ 55,744
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 103,584 | $ 103,707
Common equity tier one risk based capital to risk weighted assets | 0.134 | 0.134
Common equity tier one capital required for capital adequacy | $ 53,996 | $ 54,141
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 | $ 50,139 | $ 50,274
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
Iowa State Savings Bank [Member] |  |
Capital | $ 27,517 | $ 27,161
Capital to risk weighted assets | 0.159 | 0.151
Capital required for capital adequacy | $ 18,179 | $ 18,866
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 17,313 | $ 17,967
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 25,353 | $ 24,915
Tier one risk based capital to risk weighted assets | 0.146 | 0.139
Tier one risk based capital required for capital adequacy | $ 14,716 | $ 15,272
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 | $ 13,850 | $ 14,374
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 25,353 | $ 24,915
Tier one leverage capital to average assets | 0.091 | 0.095
Tier one leverage capital required for capital adequacy | $ 11,146 | $ 10,541
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 | $ 13,933 | $ 13,176
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 25,353 | $ 24,915
Common equity tier one risk based capital to risk weighted assets | 0.146 | 0.139
Common equity tier one capital required for capital adequacy | $ 12,119 | $ 12,577
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 | $ 11,253 | $ 11,679
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 | $ 29,318 | $ 29,222
Capital to risk weighted assets | 0.124 | 0.122
Capital required for capital adequacy | $ 24,814 | $ 25,232
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 23,633 | $ 24,030
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 26,464 | $ 26,237
Tier one risk based capital to risk weighted assets | 0.112 | 0.109
Tier one risk based capital required for capital adequacy | $ 20,088 | $ 20,426
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 | $ 18,906 | $ 19,224
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 26,464 | $ 26,237
Tier one leverage capital to average assets | 0.088 | 0.086
Tier one leverage capital required for capital adequacy | $ 12,036 | $ 12,160
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 | $ 15,045 | $ 15,200
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 26,464 | $ 26,237
Common equity tier one risk based capital to risk weighted assets | 0.112 | 0.109
Common equity tier one capital required for capital adequacy | $ 16,543 | $ 16,821
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 | $ 15,361 | $ 15,620
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
State Bank and Trust [Member] |  |
Capital | $ 22,594 | $ 22,435
Capital to risk weighted assets | 0.158 | 0.16
Capital required for capital adequacy | $ 14,991 | $ 14,719
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 14,277 | $ 14,018
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 20,911 | $ 20,734
Tier one risk based capital to risk weighted assets | 0.146 | 0.148
Tier one risk based capital required for capital adequacy | $ 12,135 | $ 11,915
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 | $ 11,421 | $ 11,214
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 20,911 | $ 20,734
Tier one leverage capital to average assets | 0.101 | 0.102
Tier one leverage capital required for capital adequacy | $ 8,290 | $ 8,096
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 | $ 10,362 | $ 10,120
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 20,911 | $ 20,734
Common equity tier one risk based capital to risk weighted assets | 0.146 | 0.148
Common equity tier one capital required for capital adequacy | $ 9,994 | $ 9,812
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 | $ 9,280 | $ 9,112
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%
United Bank and Trust [Member] |  |
Capital | $ 13,172 | $ 13,205
Capital to risk weighted assets | 0.161 | 0.164
Capital required for capital adequacy | $ 8,597 | $ 8,479
Capital required for capital adequacy to risk weighted assets | 10.50% | 10.50%
Capital required to be well capitalized | $ 8,187 | $ 8,075
Capital required to be well capitalized to risk weighted assets | 0.10 | 0.10
Tier one risk based capital | $ 12,149 | $ 12,198
Tier one risk based capital to risk weighted assets | 0.148 | 0.151
Tier one risk based capital required for capital adequacy | $ 6,959 | $ 6,864
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 | $ 6,550 | $ 6,460
Tier one risk based capital required to be well capitalized to risk weighted assets | 0.08 | 0.08
Tier one leverage capital | $ 12,149 | $ 12,198
Tier one leverage capital to average assets | 0.096 | 0.096
Tier one leverage capital required for capital adequacy | $ 5,074 | $ 5,084
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 | $ 6,343 | $ 6,356
Tier one leverage capital required to be well capitalized to average assets | 0.05 | 0.05
Common equity tier one capital | $ 12,149 | $ 12,198
Common equity tier one risk based capital to risk weighted assets | 0.148 | 0.151
Common equity tier one capital required for capital adequacy | $ 5,731 | $ 5,653
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 | $ 5,322 | $ 5,249
Common equity tier one capital required to be well capitalized to risk weighted assets | 6.50% | 6.50%

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