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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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Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

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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
	Mar. 31, 2025 USD ($) Loan	Mar. 31, 2024 USD ($) Loan	Dec. 31, 2024 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Accrued interest	$ 106,800		$ 109,800
Percentage of baseline economic forecast	40.00%	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	$ 104,214		97,335
Loans held for sale	26,596		21,525
Modified Loans To Borrowers Experiencing Financial Difficulty [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	25,000		20,200
Accruing and nonaccruing	95,600		99,500
Unfunded exposure to borrowers related to MEFD or TDR	$ 4,000		6,900
Downside Mild Recessionary S-2 [Member]
Accounts Notes And Loans Receivable [Line Items]
Percentage of baseline economic forecast	60.00%	60.00%
Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of contracts subsequently defaulted \| Loan	2	3
Recorded Investment	$ 1,900	$ 3,200
Residential Mortgages [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	46,404		44,086
Loans carried at fair value option	25,900		18,900
Unpaid principal balance	25,200		18,600
Consumer [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	$ 11,058		11,187
Number of contracts subsequently defaulted \| Loan	1
Recorded Investment	$ 6,000
Real estate in process of foreclosure	14,600		10,500
Real estate acquired through foreclosure	$ 3,200		2,000
Weighted Average [Member] \| Total Commercial [Member] \| Term Extension [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period	5 months	8 months
Weighted Average [Member] \| Total Commercial [Member] \| Other Than Insignificant Payment Delays [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period	5 months	4 months
Weighted Average [Member] \| Residential Mortgages [Member] \| Term Extension [Member]
Accounts Notes And Loans Receivable [Line Items]
Reportable modification period	1 year	8 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
Total Commercial And Industrial [Member] \| Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	$ 38,933		36,145
Commercial Non-Real Estate [Member] \| Total Commercial And Industrial [Member] \| Total Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Nonaccrual loans	34,654		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	$ 4,279		$ 2,727