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Fair Value Measurements - Fair Value Hierarchy (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Investment securities: |  |
Loans held for sale | $ 4,600 | $ 5,300
Recurring |  |
Investment securities: |  |
Loans held for sale | 4,597 | 5,324
Total assets | 2,373,929 | 2,369,011
Recurring | Corporate bonds |  |
Investment securities: |  |
Available-for-sale securities | 9,343 | 9,346
Recurring | Agency bond securities |  |
Investment securities: |  |
Available-for-sale securities | 196,689 | 193,106
Recurring | Agency mortgage-backed securities |  |
Investment securities: |  |
Available-for-sale securities | 2,139,439 | 2,138,262
Recurring | Municipal bonds |  |
Investment securities: |  |
Available-for-sale securities | 23,861 | 22,973
Recurring | Level 1 |  |
Investment securities: |  |
Loans held for sale | 0 | 0
Total assets | 0 | 0
Recurring | Level 1 | Corporate bonds |  |
Investment securities: |  |
Available-for-sale securities | 0 | 0
Recurring | Level 1 | Agency bond securities |  |
Investment securities: |  |
Available-for-sale securities | 0 | 0
Recurring | Level 1 | Agency mortgage-backed securities |  |
Investment securities: |  |
Available-for-sale securities | 0 | 0
Recurring | Level 1 | Municipal bonds |  |
Investment securities: |  |
Available-for-sale securities | 0 | 0
Recurring | Level 2 |  |
Investment securities: |  |
Loans held for sale | 0 | 0
Total assets | 2,369,332 | 2,363,687
Recurring | Level 2 | Corporate bonds |  |
Investment securities: |  |
Available-for-sale securities | 9,343 | 9,346
Recurring | Level 2 | Agency bond securities |  |
Investment securities: |  |
Available-for-sale securities | 196,689 | 193,106
Recurring | Level 2 | Agency mortgage-backed securities |  |
Investment securities: |  |
Available-for-sale securities | 2,139,439 | 2,138,262
Recurring | Level 2 | Municipal bonds |  |
Investment securities: |  |
Available-for-sale securities | 23,861 | 22,973
Recurring | Level 3 |  |
Investment securities: |  |
Loans held for sale | 4,597 | 5,324
Total assets | 4,597 | 5,324
Recurring | Level 3 | Corporate bonds |  |
Investment securities: |  |
Available-for-sale securities | 0 | 0
Recurring | Level 3 | Agency bond securities |  |
Investment securities: |  |
Available-for-sale securities | 0 | 0
Recurring | Level 3 | Agency mortgage-backed securities |  |
Investment securities: |  |
Available-for-sale securities | 0 | 0
Recurring | Level 3 | Municipal bonds |  |
Investment securities: |  |
Available-for-sale securities | $ 0 | $ 0

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