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Securities - Contractual Maturity (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Amortized Cost |  |
Due within one year | $ 150 |
Due after one year through five years | 1,880 |
Due after five years through ten years | 38,077 |
Due after ten years | 253,548 |
Amortized Cost | 488,883 | $ 416,389
Fair Value |  |
Due within one year | 149 |
Due after one year through five years | 1,808 |
Due after five years through ten years | 34,127 |
Due after ten years | 210,888 |
Fair Value | 424,685 | 415,552
Amortized Cost |  |
Due within one year | 7,177 |
Due after one year through five years | 197,307 |
Due after five years through ten years | 79,275 |
Due after ten years | 81,590 |
Amortized Cost | 2,754,317 | 2,400,956
Fair Value |  |
Due within one year | 7,201 |
Due after one year through five years | 196,673 |
Due after five years through ten years | 76,807 |
Due after ten years | 73,773 |
Fair Value | 2,528,253 | 2,386,052
Residential mortgage backed securities: |  |
Amortized Cost |  |
Amortized Cost | 22,360 | 24,832
Fair Value |  |
Fair Value | 18,985 | 24,740
Other debt securities |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 19,988 |
Amortized Cost | 19,988 | 22,049
Fair Value |  |
Without single maturity date, fair value | 18,399 |
Fair Value | 18,399 | 21,970
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 61,328 |
Amortized Cost | 123,068 | 36,515
Fair Value |  |
Debt securities, without fixed maturity, fair value | 58,710 |
Fair Value | 118,930 | 37,464
Obligations of states and political subdivisions |  |
Amortized Cost |  |
Amortized Cost | 293,655 | 267,641
Fair Value |  |
Fair Value | 246,972 | 267,289
Amortized Cost |  |
Amortized Cost | 158,609 | 153,847
Fair Value |  |
Fair Value | 149,752 | 159,110
Government agency mortgage backed securities | Residential mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 89,943 |
Amortized Cost | 89,943 | 60,507
Fair Value |  |
Without single maturity date, fair value | 83,399 |
Fair Value | 83,399 | 60,310
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 993,319 |
Amortized Cost | 993,319 | 967,497
Fair Value |  |
Debt securities, without fixed maturity, fair value | 919,416 |
Fair Value | 919,416 | 968,535
Government agency mortgage backed securities | Commercial mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 17,017 |
Amortized Cost | 17,017 | 1,855
Fair Value |  |
Without single maturity date, fair value | 14,741 |
Fair Value | 14,741 | 1,855
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 11,241 |
Amortized Cost | 11,241 | 14,717
Fair Value |  |
Debt securities, without fixed maturity, fair value | 10,673 |
Fair Value | 10,673 | 15,081
Government agency collateralized mortgage obligations | Residential mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 22,360 |
Fair Value |  |
Without single maturity date, fair value | 18,985 |
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 1,099,846 |
Amortized Cost | 1,099,846 | 1,008,514
Fair Value |  |
Debt securities, without fixed maturity, fair value | 979,920 |
Fair Value | 979,920 | 988,600
Government agency collateralized mortgage obligations | Commercial mortgage backed securities: |  |
Amortized Cost |  |
Without single maturity date, amortized cost | 45,920 |
Amortized Cost | 45,920 | 39,505
Fair Value |  |
Without single maturity date, fair value | 42,189 |
Fair Value | 42,189 | 39,388
Amortized Cost |  |
Debt securities, without fixed maturity, amortized cost | 223,234 |
Amortized Cost | 223,234 | 216,859
Fair Value |  |
Debt securities, without fixed maturity, fair value | 205,080 |
Fair Value | $ 205,080 | $ 214,252

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