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Regulatory Capital - Capital Amounts and Ratios (Details) $ in Thousands | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
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Total Risk-Based Capital |  |
Total Risk-Based Capital, Actual amount | $ 577,485 | $ 570,770
Total Risk-Based Capital, For Capital Adequacy Purposes, amount | 329,909 | 326,872
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conversion Buffer, amount | $ 433,006 | $ 429,019
Total Risk-Based Capital, Actual ratio | 0.1400 | 0.1397
Total Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.0800 | 0.0800
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.1050 | 0.1050
Tier 1 Risk-Based Capital |  |
Banking Regulation, Tier One Risk-Based Capital, Actual | $ 446,521 | $ 440,947
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, amount | 247,432 | 245,154
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | $ 350,529 | $ 347,301
Tier 1 Risk-Based Capital, Actual ratio | 0.1083 | 0.1079
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.0600 | 0.0600
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.0850 | 0.0850
Common Equity Tier 1 Capital |  |
Common Equity Tier 1 Capital, Actual amount | $ 380,007 | $ 374,433
Common Equity Tier 1 Capital, For Capital Adequacy Purposes, amount | 185,574 | 183,865
Common Equity Tier 1 Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | $ 288,671 | $ 286,013
Common Equity Tier 1 Capital, Actual ratio | 0.0921 | 0.0916
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 | $ 446,521 | $ 440,947
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, amount | 184,949 | 184,383
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | $ 184,949 | $ 184,383
Tier 1 Leverage Ratio, Actual ratio | 0.0966 | 0.0957
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, Ratio | 0.0400 | 0.0400
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.0400 | 0.0400
Bank |  |
Total Risk-Based Capital |  |
Total Risk-Based Capital, Actual amount | $ 565,440 | $ 554,269
Total Risk-Based Capital, For Capital Adequacy Purposes, amount | 329,510 | 326,528
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conversion Buffer, amount | 432,482 | 428,568
Total Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 411,887 | $ 408,160
Total Risk-Based Capital, Actual ratio | 0.1373 | 0.1358
Total Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.0800 | 0.0800
Total Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.1050 | 0.1050
Total Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio | 0.1000 | 0.1000
Tier 1 Risk-Based Capital |  |
Banking Regulation, Tier One Risk-Based Capital, Actual | $ 513,920 | $ 503,787
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, amount | 247,132 | 244,896
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | 350,104 | 346,936
Tier 1 Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 329,510 | $ 326,528
Tier 1 Risk-Based Capital, Actual ratio | 0.1248 | 0.1234
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes, Ratio | 0.0600 | 0.0600
Tier 1 Risk-Based Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.0850 | 0.0850
Tier 1 Risk-Based Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio | 0.0800 | 0.0800
Common Equity Tier 1 Capital |  |
Common Equity Tier 1 Capital, Actual amount | $ 513,920 | $ 503,787
Common Equity Tier 1 Capital, For Capital Adequacy Purposes, amount | 185,349 | 183,672
Common Equity Tier 1 Capital, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | 288,321 | 285,712
Common Equity Tier 1 Capital, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 267,727 | $ 265,304
Common Equity Tier 1 Capital, Actual ratio | 0.1248 | 0.1234
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 | $ 513,920 | $ 503,787
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, amount | 184,797 | 184,037
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, amount | 184,797 | 184,037
Tier 1 Leverage Ratio, To be Well Capitalized Under Prompt Corrective Action Regulations, amount | $ 230,996 | $ 230,047
Tier 1 Leverage Ratio, Actual ratio | 0.1112 | 0.1095
Tier 1 Leverage Ratio, For Capital Adequacy Purposes, Ratio | 0.0400 | 0.0400
Tier 1 Leverage Ratio, For Capital Adequacy Purposes Plus Capital Conservation Buffer, Ratio | 0.0400 | 0.0400
Tier 1 Leverage Ratio, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio | 0.0500 | 0.0500

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