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Securities - Amortized Cost and Estimated Fair Value of Investments in Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Available for sale, Amortized Cost |  |
Due in one year or less | $ 134,877 |
Due after one year through five years | 6,715 |
Due after five years through ten years | 27,902 |
Due after ten years | 435,353 |
Total available-for-sale investment securities | 604,847 |
MBS: | 912,703 |
Amortized Cost | 1,517,550 | $ 1,587,416
Available for sale, Fair Value |  |
Due in one year or less | 134,874 |
Due after one year through five years | 6,676 |
Due after five years through ten years | 27,480 |
Due after ten years | 371,184 |
Total available-for-sale investment securities | 540,214 |
MBS: | 916,910 |
Total | 1,457,124 | 1,533,894
Held to maturity, Amortized Cost |  |
Due in one year or less | 135 |
Due after one year through five years | 20,535 |
Due after five years through ten years | 127,653 |
Due after ten years | 1,014,090 |
Total held-to-maturity investment securities | 1,162,413 |
Mortgage-backed securities | 110,548 |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 1,272,961 | 1,279,234
Held to maturity, Fair Value |  |
Due in one year or less | 135 |
Due after one year through five years | 20,319 |
Due after five years through ten years | 123,038 |
Due after ten years | 834,922 |
Total held-to-maturity investment securities | 978,414 |
Mortgage-backed securities | 102,963 |
Total | $ 1,081,377 | $ 1,113,482

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