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v3.22.2.2

Securities, Held to Maturity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | $ 929,541 |  | $ 929,541 |  | $ 733,210
Unrealized gains | 7 |  | 7 |  | 10,040
Unrealized losses | 115,448 |  | 115,448 |  | 7,990
Estimated fair value | 814,100 |  | 814,100 |  | 735,260
Allowance for credit losses on HTM securities | 0 |  | 0 |  | 0
Transactions of HTM securities [Abstract] |  |  |  |  |
Gains from calls on HTM securities | 0 | $ 14 | 4 | $ 29 |
Asset Pledged as Collateral [Member] | Public Deposits or Other Purposes [Member] |  |  |  |  |
Securities pledged [Abstract] |  |  |  |  |
AFS and HTM securities | 1,740,000 |  | 1,740,000 |  | 1,630,000
Asset Pledged as Collateral [Member] | Securities Sold under Repurchase Agreements [Member] |  |  |  |  |
Securities pledged [Abstract] |  |  |  |  |
AFS and HTM securities | 126,200 |  | 126,200 |  | 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 | 21,179 |  | 21,179 |  | 4,365
Estimated fair value | 78,821 |  | 78,821 |  | 95,635
Mortgage-Backed, Government Sponsored Enterprises [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 254,889 |  | 254,889 |  | 161,462
Unrealized gains | 0 |  | 0 |  | 2,232
Unrealized losses | 40,946 |  | 40,946 |  | 1,319
Estimated fair value | 213,943 |  | 213,943 |  | 162,375
Mortgage-Backed, U.S. Government Agency Securities [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 18,403 |  | 18,403 |  | 9,112
Unrealized gains | 4 |  | 4 |  | 514
Unrealized losses | 573 |  | 573 |  | 0
Estimated fair value | 17,834 |  | 17,834 |  | 9,626
Collateralized Mortgage Obligations, Government-Sponsored Enterprises [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 203,213 |  | 203,213 |  | 94,342
Unrealized gains | 0 |  | 0 |  | 1,932
Unrealized losses | 14,608 |  | 14,608 |  | 129
Estimated fair value | 188,605 |  | 188,605 |  | 96,145
Collateralized Mortgage Obligations, U.S. Government Agency Securities [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 67,940 |  | 67,940 |  | 44,473
Unrealized gains | 1 |  | 1 |  | 336
Unrealized losses | 9,071 |  | 9,071 |  | 674
Estimated fair value | 58,870 |  | 58,870 |  | 44,135
State & Municipal [Member] |  |  |  |  |
Held-to-maturity securities, fair value to amortized cost [Abstract] |  |  |  |  |
Amortized cost | 285,096 |  | 285,096 |  | 323,821
Unrealized gains | 2 |  | 2 |  | 5,026
Unrealized losses | 29,071 |  | 29,071 |  | 1,503
Estimated fair value | $ 256,027 |  | $ 256,027 |  | $ 327,344

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