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Regulatory Capital - Capital Amounts and Ratios (Details) $ in Thousands | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($)
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Total Risk-Based Capital |  |
Total Risk-Based Capital, Actual amount | $ 652,426 | $ 585,966
Total Risk-Based Capital, For Capital Adequacy Purposes, amount | 369,556 | 340,581
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conversion Buffer, amount | $ 485,042 | $ 447,013
Total Risk-Based Capital, Actual ratio | 0.1412 | 0.1376
Total Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.08 | 0.08
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.105 | 0.105
Tier 1 Risk-Based Capital |  |
Banking Regulation, Tier 1 Risk-Based Capital, Actual | $ 486,065 | $ 453,049
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, amount | 277,167 | 255,436
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | $ 392,653 | $ 361,867
Tier 1 Risk-Based Capital, Actual ratio | 0.1052 | 0.1064
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.06 | 0.06
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.085 | 0.085
Common Equity Tier 1 Capital |  |
Common Equity Tier 1 Capital, Actual amount | $ 419,551 | $ 386,535
Common Equity Tier 1 Capital, For Capital Adequacy Purposes, amount | 207,875 | 191,577
Common Equity Tier 1 Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | $ 323,361 | $ 298,008
Common Equity Tier 1 Capital, Actual ratio | 0.0908 | 0.0908
Common Equity Tier 1 Capital, For Capital Adequacy Purposes, Ratio | 4.50% | 4.50%
Common Equity Tier 1 Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 7.00% | 7.00%
Leverage Ratio |  |
Tier 1 Leverage Ratio, Actual amount | $ 486,065 | $ 453,049
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, amount | 215,446 | 191,878
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | $ 215,446 | $ 191,878
Tier 1 Leverage Ratio, Actual ratio | 0.0902 | 0.0944
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, Ratio | 0.04 | 0.04
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.04 | 0.04
Bank |  |
Total Risk-Based Capital |  |
Total Risk-Based Capital, Actual amount | $ 619,058 | $ 573,158
Total Risk-Based Capital, For Capital Adequacy Purposes, amount | 368,824 | 340,003
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conversion Buffer, amount | 484,082 | 446,254
Total Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 461,030 | $ 425,004
Total Risk-Based Capital, Actual ratio | 0.1343 | 0.1349
Total Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.08 | 0.08
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.105 | 0.105
Total Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio | 0.10 | 0.10
Tier 1 Risk-Based Capital |  |
Banking Regulation, Tier 1 Risk-Based Capital, Actual | $ 561,397 | $ 520,000
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, amount | 276,618 | 255,002
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | 391,876 | 361,253
Tier 1 Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 368,824 | $ 340,003
Tier 1 Risk-Based Capital, Actual ratio | 0.1218 | 0.1224
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.06 | 0.06
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.085 | 0.085
Tier 1 Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio | 0.08 | 0.08
Common Equity Tier 1 Capital |  |
Common Equity Tier 1 Capital, Actual amount | $ 561,397 | $ 520,000
Common Equity Tier 1 Capital, For Capital Adequacy Purposes, amount | 207,464 | 191,252
Common Equity Tier 1 Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | 322,721 | 297,503
Common Equity Tier 1 Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 299,670 | $ 276,253
Common Equity Tier 1 Capital, Actual ratio | 0.1218 | 0.1224
Common Equity Tier 1 Capital, For Capital Adequacy Purposes, Ratio | 4.50% | 4.50%
Common Equity Tier 1 Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 7.00% | 7.00%
Common Equity Tier 1 Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio | 6.50% | 6.50%
Leverage Ratio |  |
Tier 1 Leverage Ratio, Actual amount | $ 561,397 | $ 520,000
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, amount | 215,230 | 191,593
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | 215,230 | 191,593
Tier 1 Leverage Ratio, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 269,037 | $ 239,491
Tier 1 Leverage Ratio, Actual ratio | 0.1043 | 0.1086
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, Ratio | 0.04 | 0.04
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.04 | 0.04
Tier 1 Leverage Ratio, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio | 0.05 | 0.05

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