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Note 12 - Fair Value Measurements and Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

		*September 30, 2024*
		*Fair Value Measurements Using*												*Total Fair Value*
		*Level 1*				*Level 2*				*Level 3*				*Measurements*
		(In thousands)
Assets
Securities AFS
U.S. Treasury securities		$	495,011			$	—			$	—			$	495,011
U.S. government agency entities			—				10,125				—				10,125
Mortgage-backed securities			—				734,536				—				734,536
Collateralized mortgage obligations			—				26,434				—				26,434
Corporate debt securities			—				242,250				—				242,250
Total securities AFS			495,011				1,013,345				—				1,508,356

Equity securities
Mutual funds			5,704				—				—				5,704
Preferred stock of government sponsored entities			2,514				—				—				2,514
Other equity securities			25,984				—				—				25,984
Total equity securities			34,202				—				—				34,202

Interest rate swaps			—				32,807				—				32,807
Foreign exchange contracts			—				535				—				535
Total assets		$	529,213			$	1,046,687			$	—			$	1,575,900

Liabilities
Interest rate swaps		$	—			$	38,001			$	—			$	38,001
Foreign exchange contracts			—				693				—				693
Total liabilities		$	—			$	38,694			$	—			$	38,694

		December 31, 2023
		Fair Value Measurements Using												Total Fair Value
		Level 1				Level 2				Level 3				Measurements
		(In thousands)
Assets
Securities AFS
U.S. Treasury securities		$	495,300			$	—			$	—			$	495,300
U.S. government agency entities			—				48,169				—				48,169
Mortgage-backed securities			—				786,723				—				786,723
Collateralized mortgage obligations			—				28,044				—				28,044
Corporate debt securities			—				246,334				—				246,334
Total securities AFS			495,300				1,109,270				—				1,604,570

Equity securities
Mutual funds			5,585				—				—				5,585
Preferred stock of government sponsored entities			1,821				—				—				1,821
Other equity securities			33,000				—				—				33,000
Total equity securities			40,406				—				—				40,406

Interest rate swaps			—				54,268				—				54,268
Foreign exchange contracts			—				379				—				379
Total assets		$	535,706			$	1,163,917			$	—			$	1,699,623

Liabilities
Interest rate swaps		$	—			$	45,762			$	—			$	45,762
Foreign exchange contracts			—				175				—				175
Total liabilities		$	—			$	45,937			$	—			$	45,937

Fair Value Measurements, Nonrecurring [Table Text Block]

		*As of September 30, 2024*																*Total Losses*
		*Fair Value Measurements Using*												*Total Fair Value*				*For the Three Months Ended*								*For the Nine Months Ended*
		*Level 1*				*Level 2*				*Level 3*				*Measurements*				*September 30, 2024*				*September 30, 2023*				*September 30, 2024*				*September 30, 2023*
		(In thousands)
Assets
Non-accrual loans by type:
Commercial loans		$	—			$	—			$	5,732			$	5,732			$	1,923			$	—			$	2,961			$	—
Commercial real estate loans			—				—				17,485				17,485				1,746				252				1,997				4,069
Residential mortgage loans and equity lines			—				—				249				249				59				—				59				—
Total non-accrual loans			—				—				23,466				23,466				3,728				252				5,017				4,069
Other real estate owned ⁽¹⁾			—				—				19,306				19,306				—				—				—				—
Other equity securities			—				—				1,539				1,539				—				—				—				—
Investments in venture capital			—				—				93				93				—				—				—				—
Total assets		$	—			$	—			$	44,404			$	44,404			$	3,728			$	252			$	5,017			$	4,069

⁽¹⁾ Other real estate owned balance of $18.3 million in the Consolidated Balance Sheets is net of estimated disposal costs.

		*As of December 31, 2023*																*Total Losses*
		*Fair Value Measurements Using*												*Total Fair Value*				*For the Twelve Months Ended*
		*Level 1*				*Level 2*				*Level 3*				*Measurements*				*December 31, 2023*				*December 31, 2022*
		(In thousands)
Assets
Non-accrual loans by type:
Commercial loans		$	—			$	—			$	191			$	191			$	—			$	1,786
Commercial real estate loans			—				—				6,882				6,882				4,069				2,091
Total non-accrual loans			—				—				7,073				7,073				4,069				3,877
Other real estate owned ⁽¹⁾			—				—				20,446				20,446				—				—
Investments in venture capital			—				—				237				237				227				268
Total assets		$	—			$	—			$	27,756			$	27,756			$	4,296			$	4,145

⁽¹⁾ Other real estate owned balance of $19.4 million in the Consolidated Balance Sheets is net of estimated disposal costs.

Fair Value, by Balance Sheet Grouping [Table Text Block]

		*September 30, 2024*								*December 31, 2023*
		*Carrying*								*Carrying*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
		(In thousands)
Financial Assets
Cash and due from banks		$	182,542			$	182,542			$	173,988			$	173,988
Short-term investments			1,156,223				1,156,223				654,813				654,813
Securities AFS			1,508,356				1,508,356				1,604,570				1,604,570
Loans held-for-sale			5,190				5,190				—				—
Loans held for investment, net			19,199,355				19,794,300				19,382,858				19,605,152
Equity securities			35,741				35,741				40,406				40,406
Investment in Federal Home Loan Bank stock			17,250				17,250				17,746				17,746

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Foreign exchange contracts		$	68,329			$	535			$	124,452			$	379
Interest rate swaps			983,562				32,807				1,406,879				54,268

		*Carrying*								*Carrying*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Financial Liabilities
Deposits		$	19,943,941			$	19,961,429			$	19,325,447			$	19,347,070
Advances from Federal Home Loan Bank			60,000				58,927				540,000				536,996
Other borrowings			17,783				15,281				15,787				13,978
Long-term debt			119,136				76,135				119,136				72,304

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Foreign exchange contracts		$	211,941			$	693			$	101,378			$	175
Interest rate swaps			1,195,424				38,001				1,078,880				45,762

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Off-Balance Sheet Financial Instruments
Commitments to extend credit		$	3,686,392			$	(18,171	)		$	3,808,620			$	(14,344	)
Standby letters of credit			422,763				(3,146	)			368,618				(2,821	)
Other letters of credit			10,858				(12	)			11,308				(10	)

Schedule Of Fair Value Of Financial Instruments [Table Text Block]

		*As of September 30, 2024*
		*Fair Value*				*Level 1*				*Level 2*				*Level 3*
		(In thousands)
Financial Assets
Cash and due from banks		$	182,542			$	182,542			$	—			$	—
Short-term investments			1,156,223				1,156,223				—				—
Loans held-for-sale			5,190				—				5,190				—
Loans held for investment, net			19,794,300				—				—				19,794,300
Equity securities			34,202				34,202				—				—
Investment in Federal Home Loan Bank stock			17,250				—				17,250				—
Financial Liabilities
Deposits			19,961,429				—				—				19,961,429
Advances from Federal Home Loan Bank			58,927				—				58,927				—
Other borrowings			15,281				—				—				15,281
Long-term debt			76,135				—				76,135				—

		*As of December 31, 2023*
		*Fair Value*				*Level 1*				*Level 2*				*Level 3*
		(In thousands)
Financial Assets
Cash and due from banks		$	173,988			$	173,988			$	—			$	—
Short-term investments			654,813				654,813				—				—
Loans held for investment, net			19,605,152				—				—				19,605,152
Equity securities			40,406				40,406				—				—
Investment in Federal Home Loan Bank stock			17,746				—				17,746				—
Financial Liabilities
Deposits			19,347,070				—				—				19,347,070
Advances from Federal Home Loan Bank			536,996				—				536,996				—
Other borrowings			13,978				—				—				13,978
Long-term debt			72,304				—				72,304				—