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Note 19 - Regulatory Matters - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands | Jun. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
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Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual |  | $ 477,814 | $ 449,497
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual |  | 0.1078 | 0.1018
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum |  | $ 199,368 | $ 198,743
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum |  | 0.045 | 0.045
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Well Capitalized, Minimum | [1] | $ 287,977 | $ 287,074
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum | [1] | 0.065 | 0.065
Banking Regulation, Tier 1 Risk-Based Capital, Actual |  | $ 477,814 | $ 449,497
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual |  | 0.1078 | 0.1018
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum |  | $ 265,825 | $ 264,991
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum |  | 0.06 | 0.06
Banking Regulation, Tier 1 Risk-Based Capital, Well Capitalized, Minimum | [1] | $ 354,433 | $ 353,322
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum | [1] | 0.08 | 0.08
Banking Regulation, Total Capital, Actual |  | $ 533,303 | $ 504,857
Banking Regulation, Total Risk-Based Capital Ratio, Actual |  | 0.1204 | 0.1143
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum |  | $ 354,433 | $ 353,322
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum |  | 0.08 | 0.08
Banking Regulation, Total Risk-Based Capital, Well Capitalized, Minimum | [1] | $ 443,041 | $ 441,652
Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum | [1] | 0.10 | 0.10
Banking Regulation, Tier 1 Leverage Capital, Actual |  | $ 477,814 | $ 449,497
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual |  | 0.0934 | 0.0869
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum |  | $ 204,575 | $ 206,832
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum |  | 0.04 | 0.04
Banking Regulation, Tier 1 Leverage Capital, Well Capitalized, Minimum | [1] | $ 255,719 | $ 258,540
Banking Regulation, Tier 1 Leverage Capital Ratio, Well Capitalized, Minimum | [1] | 0.05 | 0.05
Subsidiaries [Member] |  |  |
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Actual | [1] | $ 473,212 | $ 443,833
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Actual | [1] | 0.1054 | 0.0991
Banking Regulation, Common Equity Tier 1 Risk-Based Capital, Capital Adequacy, Minimum | [1] | $ 202,112 | $ 201,441
Banking Regulation, Common Equity Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum | [1] | 0.045 | 0.045
Banking Regulation, Tier 1 Risk-Based Capital, Actual | [1] | $ 482,337 | $ 452,903
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Actual | [1] | 0.1074 | 0.1012
Banking Regulation, Tier 1 Risk-Based Capital, Capital Adequacy, Minimum | [1] | $ 269,483 | $ 268,588
Banking Regulation, Tier 1 Risk-Based Capital Ratio, Capital Adequacy, Minimum | [1] | 0.06 | 0.06
Banking Regulation, Total Capital, Actual | [1] | $ 588,579 | $ 559,002
Banking Regulation, Total Risk-Based Capital Ratio, Actual | [1] | 0.131 | 0.1249
Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum | [1] | $ 359,311 | $ 358,118
Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum | [1] | 0.08 | 0.08
Banking Regulation, Tier 1 Leverage Capital, Actual | [1] | $ 482,337 | $ 452,903
Banking Regulation, Tier 1 Leverage Capital Ratio, Actual | [1] | 0.0916 | 0.0865
Banking Regulation, Tier 1 Leverage Capital, Capital Adequacy, Minimum | [1] | $ 210,717 | $ 209,532
Banking Regulation, Tier 1 Leverage Capital Ratio, Capital Adequacy, Minimum | [1] | 0.04 | 0.04
[1] | “Minimum to be Well Capitalized Under Prompt Corrective Action” is not formally defined under applicable banking regulations for bank holding companies.

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