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v3.22.2

Securities, Held to Maturity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | $ 936,512 |  | $ 936,512 |  | $ 733,210
Unrealized gains | 569 |  | 569 |  | 10,040
Unrealized losses | 72,847 |  | 72,847 |  | 7,990
Estimated fair value | 864,234 |  | 864,234 |  | 735,260
Allowance for credit losses on HTM securities | 0 |  | 0 |  | 0
Transactions of HTM securities [Abstract] |  |  |  |  |
Gains from calls on HTM securities | 0 | $ 0 | 4 | $ 15 |
Asset Pledged as Collateral [Member] | Public Deposits or Other Purposes [Member] |  |  |  |  |
Securities pledged [Abstract] |  |  |  |  |
AFS and HTM securities | 1,700,000 |  | 1,700,000 |  | 1,600,000
Asset Pledged as Collateral [Member] | Securities Sold under Repurchase Agreements [Member] |  |  |  |  |
Securities pledged [Abstract] |  |  |  |  |
AFS and HTM securities | 137,000 |  | 137,000 |  | 162,100
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 | 15,150 |  | 15,150 |  | 4,365
Estimated fair value | 84,850 |  | 84,850 |  | 95,635
Mortgage-Backed, Government Sponsored Enterprises [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 261,323 |  | 261,323 |  | 161,462
Unrealized gains | 0 |  | 0 |  | 2,232
Unrealized losses | 26,711 |  | 26,711 |  | 1,319
Estimated fair value | 234,612 |  | 234,612 |  | 162,375
Mortgage-Backed, U.S. Government Agency Securities [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 7,416 |  | 7,416 |  | 9,112
Unrealized gains | 9 |  | 9 |  | 514
Unrealized losses | 104 |  | 104 |  | 0
Estimated fair value | 7,321 |  | 7,321 |  | 9,626
Collateralized Mortgage Obligations, Government-Sponsored Enterprises [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 209,232 |  | 209,232 |  | 94,342
Unrealized gains | 478 |  | 478 |  | 1,932
Unrealized losses | 6,049 |  | 6,049 |  | 129
Estimated fair value | 203,661 |  | 203,661 |  | 96,145
Collateralized Mortgage Obligations, U.S. Government Agency Securities [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 70,335 |  | 70,335 |  | 44,473
Unrealized gains | 16 |  | 16 |  | 336
Unrealized losses | 5,955 |  | 5,955 |  | 674
Estimated fair value | 64,396 |  | 64,396 |  | 44,135
State & Municipal [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 288,206 |  | 288,206 |  | 323,821
Unrealized gains | 66 |  | 66 |  | 5,026
Unrealized losses | 18,878 |  | 18,878 |  | 1,503
Estimated fair value | $ 269,394 |  | $ 269,394 |  | $ 327,344

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