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v3.22.2.2

Securities (Summary of Book Values and Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value |  |
Amortized Cost | $ 2,802,855 | $ 2,662,481
Fair Value | 2,338,215 | 2,630,414
Unrealized gains | 7 | 10,595
Unrealized (losses) | (464,647) | (42,662)
Securities held to maturity: |  |
Amortized Cost | 544,193 | 513,825
Fair Value | 418,599 | 511,699
Unrealized gains | 0 | 3,540
Unrealized (losses) | (125,594) | (5,666)
U.S. Treasuries |  |
Fair Value |  |
Amortized Cost | 174,328 | 0
Fair Value | 168,723 | 0
Unrealized gains | 0 | 0
Unrealized (losses) | (5,605) | 0
Government-sponsored enterprise securities |  |
Fair Value |  |
Amortized Cost | 71,956 | 71,951
Fair Value | 57,429 | 69,179
Unrealized gains | 0 | 0
Unrealized (losses) | (14,527) | (2,772)
Mortgage-backed securities |  |
Fair Value |  |
Amortized Cost | 2,512,221 | 2,545,150
Fair Value | 2,068,769 | 2,514,805
Unrealized gains | 7 | 9,489
Unrealized (losses) | (443,459) | (39,834)
Securities held to maturity: |  |
Amortized Cost | 16,092 | 20,260
Fair Value | 14,891 | 20,845
Unrealized gains | 0 | 585
Unrealized (losses) | (1,201) | 0
Corporate bonds |  |
Fair Value |  |
Amortized Cost | 44,350 | 45,380
Fair Value | 43,294 | 46,430
Unrealized gains | 0 | 1,106
Unrealized (losses) | (1,056) | (56)
State and local governments |  |
Securities held to maturity: |  |
Amortized Cost | 528,101 | 493,565
Fair Value | 403,708 | 490,854
Unrealized gains | 0 | 2,955
Unrealized (losses) | $ (124,393) | $ (5,666)

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