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

6 Months Ended

Jun. 30, 2024

Notes Tables

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

		*June 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		$	545,000			$	—			$	—			$	545,000
U.S. government agency entities			—				11,010				—				11,010
U.S. government sponsored entities			—				79,734				—				79,734
Mortgage-backed securities			—				728,764				—				728,764
Collateralized mortgage obligations			—				26,079				—				26,079
Corporate debt securities			—				258,144				—				258,144
Total securities AFS			545,000				1,103,731				—				1,648,731

Equity securities
Mutual funds			5,503				—				—				5,503
Preferred stock of government sponsored entities			3,033				—				—				3,033
Other equity securities			21,413				—				—				21,413
Total equity securities			29,949				—				—				29,949

Interest rate swaps			—				52,192				—				52,192
Foreign exchange contracts			—				226				—				226
Total assets		$	574,949			$	1,156,149			$	—			$	1,731,098

Liabilities
Interest rate swaps		$	—			$	39,962			$	—			$	39,962
Foreign exchange contracts			—				241				—				241
Total liabilities		$	—			$	40,203			$	—			$	40,203

		*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 June 30, 2024*																*Total Losses*
		*Fair Value Measurements Using*												*Total Fair Value*				*For the Three Months Ended*								*For the Six Months Ended*
		*Level 1*				*Level 2*				*Level 3*				*Measurements*				*June 30, 2024*				*June 30, 2023*				*June 30, 2024*				*June 30, 2023*
		(In thousands)
Assets
Non accrual loans by type:
Commercial loans		$	—			$	—			$	129			$	129			$	1,038			$	34			$	1,038			$	2,037
Commercial real estate loans			—				—				19,804				19,804				251				1,202				251				5,192
Total non accrual loans			—				—				19,933				19,933				1,289				1,236				1,289				7,229
Other real estate owned ⁽¹⁾			—				—				19,246				19,246				—				—				—				—
Other equity securities			—				—				1,539				1,539				—				—				—				—
Investments in venture capital			—				—				93				93				—				—				—				—
Total assets		$	—			$	—			$	40,811			$	40,811			$	1,289			$	1,236			$	1,289			$	7,229

⁽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]

		*June 30, 2024*								*December 31, 2023*
		*Carrying*								*Carrying*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
		(In thousands)
Financial Assets
Cash and due from banks		$	160,389			$	160,389			$	173,988			$	173,988
Short-term investments			944,612				944,612				654,813				654,813
Securities AFS			1,648,731				1,648,731				1,604,570				1,604,570
Loans held for investment, net			19,193,335				19,530,559				19,382,858				19,605,152
Equity securities			31,488				31,488				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		$	192,452			$	226			$	124,452			$	379
Interest rate swaps			1,125,574				52,192				1,406,879				54,268

		*Carrying*								*Carrying*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Financial Liabilities
Deposits		$	19,773,017			$	19,775,767			$	19,325,447			$	19,347,070
Advances from Federal Home Loan Bank			165,000				164,997				540,000				536,996
Other borrowings			17,838				15,339				15,787				13,978
Long-term debt			119,136				74,294				119,136				72,304

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Foreign exchange contracts		$	116,939			$	241			$	101,378			$	175
Interest rate swaps			976,427				39,962				1,078,880				45,762

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Off-Balance Sheet Financial Instruments
Commitments to extend credit		$	3,919,636			$	(19,634	)		$	3,808,620			$	(14,344	)
Standby letters of credit			402,402				(3,051	)			368,618				(2,821	)
Other letters of credit			16,755				(12	)			11,308				(10	)

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

		*As of June 30, 2024*
		*Fair Value*				*Level 1*				*Level 2*				*Level 3*
		(In thousands)
Financial Assets
Cash and due from banks		$	160,389			$	160,389			$	—			$	—
Short-term investments			944,612				944,612				—				—
Loans held for investment, net			19,530,559				—				—				19,530,559
Equity securities			29,949				29,949				—				—
Investment in Federal Home Loan Bank stock			17,250				—				17,250				—
Financial Liabilities
Deposits			19,775,767				—				—				19,775,767
Advances from Federal Home Loan Bank			164,997				—				164,997				—
Other borrowings			15,339				—				—				15,339
Long-term debt			74,294				—				74,294				—

		*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				—