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Note 21 - Regulatory Matters - Risk Based Capital Amounts and Ratios (Details) $ in Thousands | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Total risk-based capital, actual amount | $ 894,490 | $ 849,836
Total risk-based capital, actual ratio | 0.1262 | 0.1256
Total risk-based capital, minimum for adequately capitalized amount | $ 567,068 | $ 541,370
Total risk-based capital, minimum for adequately capitalized ratio | 0.08 | 0.08
Common Equity Tier 1 risk-based capital, actual amount | $ 784,392 | $ 747,376
Common Equity Tier 1 risk-based capital, actual ratio | 0.1107 | 0.1104
Common Equity Tier 1 risk-based capital, minimum for adequately capitalized amount | $ 318,976 | $ 304,521
Common Equity Tier 1 risk-based capital, minimum for adequately capitalized ratio | 0.045 | 0.045
Tier 1 risk-based capital, actual amount | $ 810,392 | $ 773,376
Tier 1 risk-based capita, actual ratio | 0.1143 | 0.1143
Tier 1 risk-based capital, minimum for adequately capitalized amount | $ 425,301 | $ 406,027
Tier 1 risk-based capital, minimum for adequately capitalized ratio | 0.06 | 0.06
Leverage, actual amount |  | $ 773,376
Leverage, actual ratio | 0.0995 | 0.0962
Leverage, minimum for adequately capitalized amount | $ 325,800 | $ 321,713
Leverage, minimum for adequately capitalized ratio | 0.04 | 0.04
Subsidiaries [Member] |  |
Total risk-based capital, actual amount | $ 872,627 | $ 823,275
Total risk-based capital, actual ratio | 0.1235 | 0.1221
Total risk-based capital, minimum for adequately capitalized amount | $ 565,310 | $ 539,609
Total risk-based capital, minimum for adequately capitalized ratio | 0.08 | 0.08
Total risk-based capital, minimum for well capitalized amount | $ 706,637 | $ 674,511
Total risk-based capital, minimum for well capitalized ratio | 0.10 | 0.10
Common Equity Tier 1 risk-based capital, actual amount | $ 788,529 | $ 746,815
Common Equity Tier 1 risk-based capital, actual ratio | 0.1116 | 0.1107
Common Equity Tier 1 risk-based capital, minimum for adequately capitalized amount | $ 317,987 | $ 303,530
Common Equity Tier 1 risk-based capital, minimum for adequately capitalized ratio | 0.045 | 0.045
Common Equity Tier 1 risk-based capital, minimum for well capitalized amount | $ 459,314 | $ 438,432
Common Equity Tier 1 risk-based capital, minimum for well capitalized ratio | 0.065 | 0.065
Tier 1 risk-based capital, actual amount | $ 788,529 | $ 746,815
Tier 1 risk-based capita, actual ratio | 0.1116 | 0.1107
Tier 1 risk-based capital, minimum for adequately capitalized amount | $ 423,982 | $ 404,707
Tier 1 risk-based capital, minimum for adequately capitalized ratio | 0.06 | 0.06
Tier 1 risk-based capital, minimum for well capitalized amount | $ 565,310 | $ 539,609
Tier 1 risk-based capital, minimum for well capitalized ratio | 0.08 | 0.08
Leverage, actual amount | $ 788,529 | $ 746,815
Leverage, actual ratio | 0.0969 | 0.093
Leverage, minimum for adequately capitalized amount | $ 325,623 | $ 321,323
Leverage, minimum for adequately capitalized ratio | 0.04 | 0.04
Leverage, minimum for well capitalized amount | $ 407,029 | $ 401,654
Leverage, minimum for well capitalized ratio | 0.05 | 0.05

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