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

6 Months Ended

Jun. 30, 2025

Notes Tables

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

		*June 30, 2025*
		*Fair Value Measurements Using*												*Total Fair Value*
		*Level 1*				*Level 2*				*Level 3*				*Measurements*
		(In thousands)
Assets
Securities AFS
U.S. Treasury securities		$	768,249			$	—			$	—			$	768,249
U.S. government agency entities			—				7,934				—				7,934
Mortgage-backed securities			—				658,431				—				658,431
Collateralized mortgage obligations			—				23,927				—				23,927
Corporate debt securities			—				189,892				—				189,892
Total securities AFS			768,249				880,184				—				1,648,433

Equity securities
Mutual funds			5,633				—				—				5,633
Preferred stock of government sponsored entities			9,012				—				—				9,012
Other equity securities			12,665				—				—				12,665
Total equity securities			27,310				—				—				27,310

Interest rate swaps			—				31,571				—				31,571
Foreign exchange contracts			—				1,522				—				1,522
Total assets		$	795,559			$	913,277			$	—			$	1,708,836

Liabilities
Interest rate swaps		$	—			$	34,108			$	—			$	34,108
Foreign exchange contracts			—				247				—				247
Total liabilities		$	—			$	34,355			$	—			$	34,355

		*December 31, 2024*
		*Fair Value Measurements Using*												*Total Fair Value*
		*Level 1*				*Level 2*				*Level 3*				*Measurements*
		(In thousands)
Assets
Securities AFS
U.S. Treasury securities		$	621,462			$	—			$	—			$	621,462
U.S. government agency entities			—				9,149				—				9,149
Mortgage-backed securities			—				684,016				—				684,016
Collateralized mortgage obligations			—				24,556				—				24,556
Corporate debt securities			—				207,945				—				207,945
Total securities AFS			621,462				925,666				—				1,547,128

Equity securities
Mutual funds			5,532				—				—				5,532
Preferred stock of government sponsored entities			7,287				—				—				7,287
Other equity securities			20,071				—				—				20,071
Total equity securities			32,890				—				—				32,890

Interest rate swaps			—				39,958				—				39,958
Foreign exchange contracts			—				490				—				490
Total assets		$	654,352			$	966,114			$	—			$	1,620,466

Liabilities
Interest rate swaps		$	—			$	36,319			$	—			$	36,319
Foreign exchange contracts			—				785				—				785
Total liabilities		$	—			$	37,104			$	—			$	37,104

Fair Value Measurements, Nonrecurring [Table Text Block]

		*As of June 30, 2025*																*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, 2025*				*June 30, 2024*				*June 30, 2025*				*June 30, 2024*
		(In thousands)
Assets
Non-accrual loans by type:
Commercial loans		$	—			$	—			$	16,577			$	16,577			$	—			$	1,038			$	8,652			$	1,038
Commercial real estate loans			—				—				28,803				28,803				—				251				3,839				251
Residential mortgage loans and equity lines			—				—				235				235				—				—				—				—
Total non-accrual loans			—				—				45,615				45,615				—				1,289				12,491				1,289
Other real estate owned ⁽¹⁾			—				—				19,896				19,896				—				—				—				—
Other equity securities			—				—				1,539				1,539				—				—				—				—
Investments in venture capital			—				—				84				84				—				—				—				—
Total assets		$	—			$	—			$	67,134			$	67,134			$	—			$	1,289			$	12,491			$	1,289

⁽¹⁾ Other real estate owned balance of $19.0 million in the Consolidated Balance Sheets is net of estimated disposal costs.

		*As of December 31, 2024*																*Total Losses*
		*Fair Value Measurements Using*												*Total Fair Value*				*For the Twelve Months Ended*
		*Level 1*				*Level 2*				*Level 3*				*Measurements*				*December 31, 2024*				*December 31, 2023*
		(In thousands)
Assets
Non-accrual loans by type:
Commercial loans		$	—			$	—			$	10,896			$	10,896			$	5,654			$	—
Commercial real estate loans			—				—				15,320				15,320				4,049				4,069
Commercial real estate loans			—				—				243				243				59				—
Total non-accrual loans			—				—				26,459				26,459				9,762				4,069
Other real estate owned ⁽¹⁾			—				—				24,126				24,126				—				—
Other equity securities			—				—				1,539				1,539				—				—
Investments in venture capital			—				—				86				86				147				227
Total assets		$	—			$	—			$	52,210			$	52,210			$	9,909			$	4,296

⁽¹⁾ Other real estate owned balance of $23.1 million in the Consolidated Balance Sheets is net of estimated disposal costs.

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

		*June 30, 2025*								*December 31, 2024*
		*Carrying*								*Carrying*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
		(In thousands)
Financial Assets
Cash and due from banks		$	190,011			$	190,011			$	157,167			$	157,167
Short-term investments			1,056,964				1,056,964				882,353				882,353
Securities AFS			1,648,433				1,648,433				1,547,128				1,547,128
Loans held-for-sale			13,338				13,338				—				—
Loans held for investment, net			19,597,337				20,072,336				19,203,649				19,500,647
Equity securities			28,849				28,849				34,429				34,429
Investment in Federal Home Loan Bank stock			17,250				17,250				17,250				17,250

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Foreign exchange contracts		$	197,362			$	1,522			$	62,794			$	490
Interest rate swaps			1,081,046				31,571				1,065,580				39,958

		*Carrying*								*Carrying*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Financial Liabilities
Deposits		$	20,006,330			$	19,983,108			$	19,686,199			$	19,670,327
Advances from Federal Home Loan Bank			412,000				410,444				60,000				59,606
Other borrowings			17,652				15,656				17,740				15,281
Long-term debt			119,136				76,785				119,136				73,752

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Foreign exchange contracts		$	37,944			$	247			$	171,945			$	785
Interest rate swaps			1,492,313				34,108				1,198,471				36,319

		*Notional*								*Notional*
		*Amount*				*Fair Value*				*Amount*				*Fair Value*
Off-Balance Sheet Financial Instruments
Commitments to extend credit		$	3,564,709			$	(19,138	)		$	3,470,296			$	(18,226	)
Standby letters of credit			466,558				(2,763	)			439,769				(2,900	)
Other letters of credit			11,327				(13	)			12,347				(14	)

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

		*As of June 30, 2025*
		*Fair Value*				*Level 1*				*Level 2*				*Level 3*
		(In thousands)
Financial Assets
Cash and due from banks		$	190,011			$	190,011			$	—			$	—
Short-term investments			1,056,964				1,056,964				—				—
Loans held-for-sale			13,338				—				13,338				—
Loans held for investment, net			20,072,336				—				—				20,072,336
Equity securities			1,539				—				—				1,539
Investment in Federal Home Loan Bank stock			17,250				—				17,250				—
Financial Liabilities
Deposits			19,983,108				—				—				19,983,108
Advances from Federal Home Loan Bank			410,444				—				410,444				—
Other borrowings			15,656				—				—				15,656
Long-term debt			76,785				—				76,785				—

		*As of December 31, 2024*
		*Fair Value*				*Level 1*				*Level 2*				*Level 3*
		(In thousands)
Financial Assets
Cash and due from banks		$	157,167			$	157,167			$	—			$	—
Short-term investments			882,353				882,353				—				—
Loans held for investment, net			19,500,647				—				—				19,500,647
Equity securities			1,539				—				—				1,539
Investment in Federal Home Loan Bank stock			17,250				—				17,250				—
Financial Liabilities
Deposits			19,670,327				—				—				19,670,327
Advances from Federal Home Loan Bank			59,606				—				59,606				—
Other borrowings			15,281				—				—				15,281
Long-term debt			73,752				—				73,752				—