Derivative Instruments and Hedging Activities - Effect Of Fair Value Hedges On Consolidated Statements Of Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Derivative [Line Items]
Loans, including fees	$ 691,715	$ 629,557
Deposits	332,666	173,935
Long-term debt	29,595	42,529
Loans, including fees \| Cash Flow Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	(39,823)	(39,892)
Loans, including fees \| Fair Value Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	0	0
Amounts related to interest settlements and amortization on derivatives	0	0
Recognized on derivatives	0	0
Recognized on hedged items	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	(39,823)	(39,892)
Deposits \| Cash Flow Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	0	0
Deposits \| Fair Value Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	(6,238)	(3,371)
Amounts related to interest settlements and amortization on derivatives	(6,238)	(3,371)
Recognized on derivatives	(2,067)	(12,057)
Recognized on hedged items	2,067	12,057
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
Long-term debt \| Cash Flow Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	0	0
Long-term debt \| Fair Value Hedges
Derivative [Line Items]
Pre-tax income (loss) recognized on cash flow hedges	(3,724)	(2,721)
Amounts related to interest settlements and amortization on derivatives	(3,724)	(2,721)
Recognized on derivatives	(1,918)	(3,952)
Recognized on hedged items	1,918	3,952
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

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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- Definition

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
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-Publisher FASB
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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1)
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- Definition

Aggregate amount of interest expense on all deposits.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (a)
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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