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Securities - Securities by Contractual Maturity (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 1,807 |
Due after one year through five years | 17,277 |
Due after five years through ten years | 60,985 |
Due after ten years | 812,102 |
Amortized Cost | 1,891,435 | $ 2,094,826
Fair Value |  |
Due in one year or less | 1,793 |
Due after one year through five years | 16,880 |
Due after five years through ten years | 54,202 |
Due after ten years | 606,312 |
Fair Value | 1,476,956 | 1,761,669
MBS/CMO |  |
Amortized Cost |  |
Securities without single maturity | 775,708 |
Amortized Cost | 775,708 | 846,519
Fair Value |  |
Securities without single maturity | 620,563 |
Fair Value | 620,563 | 714,681
US Gov’t Sponsored Entities & Agencies |  |
Amortized Cost |  |
Securities without single maturity | 223,556 |
Amortized Cost | 223,556 | 245,017
Fair Value |  |
Securities without single maturity | 177,206 |
Fair Value | $ 177,206 | $ 205,017

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