Derivative Instruments and Hedging Activities - Effect Of Fair Value Hedges On Consolidated Statements Of Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative [Line Items]
Loans, including fees	$ 701,570	$ 670,230	$ 1,393,285	$ 1,299,787
Deposits	335,754	241,780	668,420	415,715
Long-term debt	28,390	55,915	57,985	98,444
Loans, including fees \| Cash Flow Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	(36,527)	(42,748)	(76,350)	(82,640)
Loans, including fees \| Fair Value Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	0	0	0	0
Amounts related to interest settlements and amortization on derivatives	0	0	0	0
Recognized on derivatives	0	0	0	0
Recognized on hedged items	0	0	0	0
Loans, including fees \| Interest Rate Contract \| Cash Flow Hedges
Derivative [Line Items]
Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans	(36,527)	(42,748)	(76,350)	(82,640)
Deposits \| Cash Flow Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	0	0	0	0
Deposits \| Fair Value Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	(6,287)	(5,782)	(12,525)	(9,153)
Amounts related to interest settlements and amortization on derivatives	(6,287)	(5,782)	(12,525)	(9,153)
Recognized on derivatives	2,469	(20,466)	402	(8,296)
Recognized on hedged items	(2,469)	20,466	(402)	8,296
Deposits \| Interest Rate Contract \| Cash Flow Hedges
Derivative [Line Items]
Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans	0	0	0	0
Long-term debt \| Cash Flow Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	0	0	0	0
Long-term debt \| Fair Value Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	(3,618)	(4,510)	(7,342)	(7,231)
Amounts related to interest settlements and amortization on derivatives	(3,618)	(4,510)	(7,342)	(7,231)
Recognized on derivatives	914	(20,823)	(1,004)	(5,427)
Recognized on hedged items	(914)	20,823	1,004	5,427
Long-term debt \| Interest Rate Contract \| Cash Flow Hedges
Derivative [Line Items]
Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans	$ 0	$ 0	$ 0	$ 0

Increase (Decrease) In Fair Value Of Amounts Related To Interest Settlements And Amortization On Derivatives

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- Definition

Realized Gains (Losses) Reclassified From AOCI, Pre-Tax, To Interest Income On Loans

+ References

No definition available.

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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- Definition

Amount of unrealized gain (loss) included in earnings related to the fair value of the hedged item in an interest rate fair value hedge, offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

+ References

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- Definition

Interest and fee income generated by loans the Entity intends and has the ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (1) industrial and agricultural; (2) real estate; and (3) real estate construction loans; (4) trade financing; (5) lease financing; (6) home equity lines-of-credit; (7) automobile and other vehicle loans; and (8) credit card and other revolving-type loans. Also includes interest income for leases held by the Entity.

+ References

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- Definition

Aggregate amount of interest expense on all deposits.

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Aggregate amount of interest paid or due on all long-term debt.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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