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v3.21.2

Securities, Held to Maturity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | $ 622,351 |  | $ 622,351 |  | $ 616,560
Unrealized gains | 14,822 |  | 14,822 |  | 21,942
Unrealized losses | 4,219 |  | 4,219 |  | 1,675
Estimated fair value | 632,954 |  | 632,954 |  | 636,827
Allowance for credit losses on HTM securities | 0 |  | 0 |  | 0
Gains from calls on HTM securities | 0 | $ 4 | 15 | $ 4 |
Amortized costs of securities available for sale and held to maturity pledged | 1,600,000 |  | 1,600,000 |  | 1,400,000
Amortized costs of securities AFS and HTM pledged as collateral for repurchase agreements | 164,500 |  | 164,500 |  | 305,200
Federal Agency [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 100,000 |  | 100,000 |  | 100,000
Unrealized gains | 0 |  | 0 |  | 0
Unrealized losses | 3,293 |  | 3,293 |  | 1,658
Estimated fair value | 96,707 |  | 96,707 |  | 98,342
Mortgage-Backed, Government Sponsored Enterprises [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 114,278 |  | 114,278 |  | 107,914
Unrealized gains | 3,003 |  | 3,003 |  | 4,583
Unrealized losses | 38 |  | 38 |  | 0
Estimated fair value | 117,243 |  | 117,243 |  | 112,497
Mortgage-Backed, U.S. Government Agency Securities [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 10,299 |  | 10,299 |  | 11,533
Unrealized gains | 821 |  | 821 |  | 979
Unrealized losses | 0 |  | 0 |  | 0
Estimated fair value | 11,120 |  | 11,120 |  | 12,512
Collateralized Mortgage Obligations, Government-Sponsored Enterprises [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 83,300 |  | 83,300 |  | 103,105
Unrealized gains | 3,664 |  | 3,664 |  | 4,477
Unrealized losses | 0 |  | 0 |  | 0
Estimated fair value | 86,964 |  | 86,964 |  | 107,582
Collateralized Mortgage Obligations, U.S. Government Agency Securities [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 39,472 |  | 39,472 |  | 79,145
Unrealized gains | 1,163 |  | 1,163 |  | 3,950
Unrealized losses | 0 |  | 0 |  | 0
Estimated fair value | 40,635 |  | 40,635 |  | 83,095
State & Municipal [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 275,002 |  | 275,002 |  | 214,863
Unrealized gains | 6,171 |  | 6,171 |  | 7,953
Unrealized losses | 888 |  | 888 |  | 17
Estimated fair value | $ 280,285 |  | $ 280,285 |  | $ 222,799

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