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v3.23.1

Securities Securities (Reconciliation of amortized cost of held to maturity securities) (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | $ 1,799 | $ 729
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (160,671) | (181,139)
Debt Securities, Held-to-maturity, Fair Value | 1,519,504 | 1,524,710
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 1,678,376 | 1,705,120
Small Business Administration Pooled Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 895 | 313
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (4,336) | (6,225)
Debt Securities, Held-to-maturity, Fair Value | 132,342 | 130,918
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 135,783 | 136,830
Collateralized Debt Obligations [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (71,197) | (77,554)
Debt Securities, Held-to-maturity, Fair Value | 450,424 | 458,417
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 521,621 | 535,971
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 896 | 408
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (73,336) | (83,383)
Debt Securities, Held-to-maturity, Fair Value | 815,554 | 815,952
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 887,994 | 898,927
US Treasury Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (9,936) | (11,755)
Debt Securities, Held-to-maturity, Fair Value | 90,718 | 88,879
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 100,654 | 100,634
U.S. government agency securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (1,866) | (2,222)
Debt Securities, Held-to-maturity, Fair Value | 28,958 | 29,036
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | 30,824 | 31,258
Trust Preferred Securities Subject to Mandatory Redemption [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 8 | 8
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 0 | 0
Debt Securities, Held-to-maturity, Fair Value | 1,508 | 1,508
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 0 | 0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss | $ 1,500 | $ 1,500

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