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Loans And Allowance For Credit Losses (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Federal Home Loan Bank Debt | $ 3,700,000 |  |
Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Federal Reserve Bank Debt | 2,700,000 |  |
Financing Receivable, Nonaccrual, No Allowance | 9,100 |  | $ 0
Commitments to lend additional funds to customers with restructured loans | $ 13,300 |  | 11,400
Period after which loans are deemed in default (in days) | 90 days |  |
Residential mortgage loans held for sale | $ 1,657 |  | 4,028
Unpaid Principal Balance on Personal Real Estate Loans Held for Sale | 1,600 |  |
HFS Loans on non accrual status | 0 |  |
HFS loans 90 days past due and still accruing | 0 |  |
Foreclosed real estate | 678 |  | 1,200
Residential Real Estate Acquired Through Foreclosure through Obtaining Physical Possession | 678 |  | 1,000
Personal property acquired in repossession | 2,800 |  | 2,300
Loans Receivable |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Accrued Interest Receivable | 78,900 |  | 74,400
Accrued Interest Receivable | 78,900 |  | $ 74,400
Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Accrued Interest, Writeoff | 39 | $ 112 |
Personal Banking Portfolio Segment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, Accrued Interest, Writeoff | $ 1,600 | $ 1,700 |

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- Definition The carrying amount, as of the date of the latest financial statement presented, of loans receivable which are owned but transferred to serve as collateral for the payment of FRB debt obligations, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. + References No definition available. + Details
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