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Securities - Contractual Maturity (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Amortized Cost |  |
Due within one year | $ 150 |
Due after one year through five years | 1,863 |
Due after five years through ten years | 44,350 |
Due after ten years | 246,406 |
Amortized Cost | 1,353,534 | $ 416,389
Fair Value |  |
Due within one year | 147 |
Due after one year through five years | 1,750 |
Due after five years through ten years | 37,553 |
Due after ten years | 189,717 |
Fair Value | 1,218,656 | 415,552
Amortized Cost |  |
Due within one year | 8,900 |
Due after one year through five years | 227,785 |
Due after five years through ten years | 77,471 |
Due after ten years | 75,791 |
Amortized Cost | 1,780,914 | 2,400,956
Fair Value |  |
Due within one year | 8,864 |
Due after one year through five years | 221,447 |
Due after five years through ten years | 71,942 |
Due after ten years | 65,160 |
Fair Value | 1,569,242 | 2,386,052
Residential mortgage backed securities: |  |
Amortized Cost |  |
Amortized Cost | 433,407 | 24,832
Fair Value |  |
Fair Value | 406,369 | 24,740
Other debt securities |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 64,344 |
Amortized Cost | 65,344 | 22,049
Fair Value |  |
Without single maturity date, fair value | 59,013 |
Fair Value | 60,013 | 21,970
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 10,129 |
Amortized Cost | 74,888 | 36,515
Fair Value |  |
Debt securities, without fixed maturity, fair value | 9,068 |
Fair Value | 71,320 | 37,464
Government agency mortgage backed securities | Residential mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 500,348 |
Amortized Cost | 499,348 | 60,507
Fair Value |  |
Without single maturity date, fair value | 471,070 |
Fair Value | 470,070 | 60,310
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 528,196 |
Amortized Cost | 528,196 | 967,497
Fair Value |  |
Debt securities, without fixed maturity, fair value | 469,028 |
Fair Value | 469,028 | 968,535
Government agency mortgage backed securities | Commercial mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 17,011 |
Amortized Cost | 17,011 | 1,855
Fair Value |  |
Without single maturity date, fair value | 13,582 |
Fair Value | 13,582 | 1,855
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 11,204 |
Amortized Cost | 11,204 | 14,717
Fair Value |  |
Debt securities, without fixed maturity, fair value | 10,247 |
Fair Value | 10,247 | 15,081
Government agency collateralized mortgage obligations | Residential mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 433,407 |
Fair Value |  |
Without single maturity date, fair value | 406,369 |
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 626,821 |
Amortized Cost | 626,821 | 1,008,514
Fair Value |  |
Debt securities, without fixed maturity, fair value | 523,998 |
Fair Value | 523,998 | 988,600
Government agency collateralized mortgage obligations | Commercial mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 45,655 |
Amortized Cost | 45,655 | 39,505
Fair Value |  |
Without single maturity date, fair value | 39,455 |
Fair Value | 39,455 | 39,388
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 214,617 |
Amortized Cost | 214,617 | 216,859
Fair Value |  |
Debt securities, without fixed maturity, fair value | 189,488 |
Fair Value | $ 189,488 | $ 214,252

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