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Note 14 - Regulatory Capital - Schedule of Comparison (Details) $ in Thousands | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
--- | --- | ---
Actual, Capital, Rate | 0.141 | 0.137
Actual, Tier 1 Risk-based Rate | 0.109 | 0.105
Actual, Tier 1 Leverage Rate | 0.092 | 0.09
Actual, CET 1 Rate | 0.109 | 0.105
First Security Bank of Washington, Subsidiary [Member] |  |
Actual, Capital | $ 346,551 | $ 339,436
Actual, Capital, Rate | 0.1372 | 0.1337
Capital Adequacy, Total | $ 202,098 | $ 203,094
Capital Adequacy, Total Rate | 0.08 | 0.08
Capital Adequacy, Total Risk-based with Buffer | $ 265,253 | $ 266,561
Capital Adequacy, Total Risk-based with Buffer, Rate | 0.105 | 0.105
Well Capitalized, Total Capital | $ 252,622 | $ 253,868
Well Capitalized, Total Capital Rate | 0.10 | 0.10
Actual, Tier 1 Risk-based | $ 314,938 | $ 307,686
Actual, Tier 1 Risk-based Rate | 0.1247 | 0.1212
Capital Adequacy, Tier 1 Risk-based | $ 151,573 | $ 152,321
Capital Adequacy, Tier 1 Risk-based Rate | 0.06 | 0.06
Capital Adequacy, Tier 1 Risk-based with Buffer | $ 214,729 | $ 215,787
Capital Adequacy, Tier 1 Risk-based with Buffer, Rate | 0.085 | 0.085
Well Capitalized, Tier 1 Risk-based | $ 202,098 | $ 203,094
Well Capitalized, Tier 1 Risk-based Rate | 0.08 | 0.08
Actual, Tier 1 Leverage | $ 314,938 | $ 307,686
Actual, Tier 1 Leverage Rate | 0.1061 | 0.1039
Capital Adequacy, Tier 1 Leverage | $ 118,727 | $ 118,488
Capital Adequacy, Tier 1 Leverage Rate | 0.04 | 0.04
Well Capitalized, Tier 1 Leverage | $ 148,408 | $ 148,109
Well Capitalized, Tier 1 Leverage Rate | 0.05 | 0.05
Actual, CET 1 | $ 314,938 | $ 307,686
Actual, CET 1 Rate | 0.1247 | 0.1212
Capital Adequacy, CET 1 | $ 113,680 | $ 114,240
Capital Adequacy, CET 1 Rate | 0.045 | 0.045
Capital Adequacy, CET 1 with Buffer | $ 176,835 | $ 177,707
Capital Adequacy, CET 1 with Buffer , Rate | 0.07 | 0.07
Well Capitalized, CET 1 | $ 164,204 | $ 165,014
Well Capitalized, CET 1 Rate | 0.065 | 0.065

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