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Financing receivable modifications subsequent default number of contracts.

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Impaired financing receivables unpaid principal balance.

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Loans and leases accrued interest.

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Percentage of baseline economic forecast.

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Reportable modification period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty.

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Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty.

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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Amount of commitment to lend additional funds to debtor experiencing financial difficulty for which creditor has modified terms of financing receivable.

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Amount, before valuation allowance, of financing receivable classified as held-for-sale.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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Loans and Allowance for Credit Losses (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($) Loan	Jun. 30, 2024 USD ($) Loan	Jun. 30, 2025 USD ($) Loan	Jun. 30, 2024 USD ($) Loan	Dec. 31, 2024 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Accrued interest	$ 109,700		$ 109,700		$ 109,800
Percentage of baseline economic forecast	50.00%	40.00%	50.00%	40.00%
Description of post modification defaults			A payment default occurs if the loan is either 90 days or more delinquent or has been charged off as of the end of the period presented.
Nonaccrual loans	$ 94,922		$ 94,922		97,335
Loans held for sale	30,760		30,760		21,525
Modified Loans To Borrowers Experiencing Financial Difficulty [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	13,100		13,100		20,200
Accruing and nonaccruing	75,300		75,300		99,500
Unfunded exposure to borrowers related to MEFD or TDR	$ 2,400		$ 2,400		6,900
Downside Mild Recessionary S-2 [Member]
Accounts Notes And Loans Receivable [Line Items]
Percentage of baseline economic forecast	50.00%	60.00%	50.00%	60.00%
Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of contracts subsequently defaulted \| Loan	6	1	8	4
Recorded Investment	$ 18,900	$ 6,300	$ 20,800	$ 9,600
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	41,300		41,300		44,086
Number of contracts subsequently defaulted \| Loan		1		1
Recorded Investment		$ 100		$ 100
Loans carried at fair value option	30,000		30,000		18,900
Unpaid principal balance	29,100		29,100		18,600
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	10,260		10,260		11,187
Real estate in process of foreclosure	15,300		15,300		10,500
Real estate acquired through foreclosure	$ 4,800		$ 4,800		2,000
Weighted Average [Member] \| Total Commercial [Member] \| Term Extension [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period	2 months	2 months	3 months	6 months
Weighted Average [Member] \| Total Commercial [Member] \| Other Than Insignificant Payment Delays [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period	4 months		4 months	3 months
Weighted Average [Member] \| Residential Mortgages [Member] \| Term Extension [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period	17 months	3 years	13 months	7 years
Weighted Average [Member] \| Residential Mortgages [Member] \| Other Than Insignificant Payment Delays [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period			1 month
Weighted Average [Member] \| Consumer [Member] \| Term Extension [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period		4 years		4 years
Total Commercial And Industrial [Member] \| Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	$ 35,495		$ 35,495		36,145
Commercial Non-Real Estate [Member] \| Total Commercial And Industrial [Member] \| Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	31,906		31,906		33,418
Commercial Real Estate - Owner Occupied [Member] \| Total Commercial And Industrial [Member] \| Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	$ 3,589		$ 3,589		$ 2,727