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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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Amount of a loan relationship balance of which the loans are reviewed annually.

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Amount of a loan relationship balance of which the loans are reviewed on a performance basis.

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Amount of accrued interest on financing receivable modified during period for debtor experiencing financial difficulty.

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Loans and Leases - Narrative (Details) - USD ($)	9 Months Ended
Loans and Leases - Narrative (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable, net of deferred income	$ 6,574,958,000	$ 6,123,230,000	$ 5,849,259,000
Amount of accrued interest receivable excluded from amortized cost, modified	15,000
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable, net of deferred income	0
Minimum [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of loan relationship balance, loans reviewed annually	1,000,000
Maximum [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Amount of loan relationship balance, loans reviewed on a performance basis	$ 1,000,000