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v3.21.2

Securities (Summary of Book Values and Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Fair Value |  |
Amortized Cost | $ 2,114,614 | $ 1,432,684
Fair Value | 2,115,153 | 1,453,132
Unrealized Gains | 19,999 | 22,963
Unrealized (Losses) | (19,460) | (2,515)
Debt Securities, Held-to-maturity, Maturity [Abstract] |  |
Amortized Cost | 291,728 | 167,551
Fair Value | 292,774 | 170,734
Unrealized Gains | 3,247 | 3,348
Unrealized (Losses) | (2,201) | (165)
Government-sponsored enterprise securities |  |
Fair Value |  |
Amortized Cost | 70,015 | 70,016
Fair Value | 67,872 | 70,206
Unrealized Gains | 0 | 371
Unrealized (Losses) | (2,143) | (181)
Mortgage-backed securities |  |
Fair Value |  |
Amortized Cost | 2,000,949 | 1,318,998
Fair Value | 2,002,319 | 1,337,706
Unrealized Gains | 18,541 | 20,832
Unrealized (Losses) | (17,171) | (2,124)
Debt Securities, Held-to-maturity, Maturity [Abstract] |  |
Amortized Cost | 24,267 | 29,959
Fair Value | 25,236 | 30,900
Unrealized Gains | 969 | 941
Unrealized (Losses) | 0 | 0
Corporate bonds |  |
Fair Value |  |
Amortized Cost | 43,650 | 43,670
Fair Value | 44,962 | 45,220
Unrealized Gains | 1,458 | 1,760
Unrealized (Losses) | (146) | (210)
State and local governments |  |
Debt Securities, Held-to-maturity, Maturity [Abstract] |  |
Amortized Cost | 267,461 | 137,592
Fair Value | 267,538 | 139,834
Unrealized Gains | 2,278 | 2,407
Unrealized (Losses) | $ (2,201) | $ (165)

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