Derivative and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The following table presents amounts that were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges:

	Line Item in the Consolidated Balance Sheets in Which the Hedged Item is Included
	Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)		Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)
(in thousands)	Mar 31, 2026				Dec 31, 2025
Other long-term funding	$	(299,819)	$	181	$	(301,760)	$	(1,760)
FHLB Advances	(197,673)		2,327		(198,722)		1,278
Total	$	(497,492)	$	2,508	$	(500,482)	$	(482)

(a) Excludes hedged items where only foreign currency risk is the designated hedged risk. At March 31, 2026 and December 31, 2025, the carrying amount excluded for foreign currency denominated loans was $304.8 million and $318.5 million, respectively.

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The tables below identify the effect of fair value and cash flow hedge accounting on the Corporation's consolidated statements of income:

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value and Cash Flow Hedging Relationships
	Three Months Ended Mar 31,
	2026				2025
(in thousands)	Interest Income		Interest (Expense)		Interest Income		Interest (Expense)
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value or cash flow hedges are recorded(a)	$	604	$	(397)	$	(1,149)	$	(2,219)
The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20
Interest contracts:
Hedged items	(143)		2,990		(32)		(6,997)
Derivatives designated as hedging instruments(a)	746		(3,387)		(1,118)		4,778

(a) Includes net settlements on the derivatives.

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value Hedging Relationships
	Three Months Ended Mar 31,
	2026		2025
(in thousands)	Capital Markets, Net		Capital Markets, Net
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value hedges are recorded	$	2	$	1
The effects of fair value hedging: Impact on fair value hedging relationships in Subtopic 815-20
Foreign currency contracts:
Hedged items	(4,923)		553
Derivatives designated as hedging instruments	4,925		(551)

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss):

	Three Months Ended Mar 31,
(in thousands)	2026		2025
Interest rate-related instruments designated as cash flow hedging instruments
Amount of (loss) income recognized in OCI on cash flow hedge derivatives(a)	$	(7,912)	$	7,268
Amount of loss reclassified from accumulated other comprehensive income (loss) into interest income(a)	(746)		1,118

(a) The entirety of gains (losses) recognized in OCI as well as those reclassified from accumulated other comprehensive income (loss) into interest income were included components in the assessment of hedge effectiveness.

Gain (loss) on derivative instruments not designated as hedging instruments

The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income:

	Consolidated Statements of Income Category of Gain / (Loss)  Recognized in Income	Three Months Ended Mar 31,
(in thousands)		2026		2025
Derivative instruments
Interest rate-related and other instruments — customer and mirror, net	Capital markets, net	$	(30)	$	(48)
Interest rate-related instruments — MSRs hedge	Mortgage banking, net	202		1,466
Foreign currency exchange forwards	Capital markets, net	440		500
Interest rate lock commitments (mortgage)	Mortgage banking, net	962		661
Forward commitments (mortgage)	Mortgage banking, net	444		(837)