Note 3 - Investment Securities (Tables)

6 Months Ended

Jun. 30, 2026

Notes Tables

Marketable Securities [Table Text Block]

		*June 30, 2026*
		*Amortized*				*Unrealized*				*Unrealized*				*Allowance for*				*Fair*
(dollars in thousands)		*Cost*				*Gains*				*Losses*				*Credit Losses*				*Value*
Available-for-sale
U.S. Treasury and agencies		$	13,275			$	—			$	(41	)		$	—			$	13,234
Mortgage backed securities
Residential agency			485,442				94				(5,883	)			—				479,653
Asset backed securities			14				—				—				—				14
Corporate bonds			42,984				39				(1,733	)			—				41,290
Total available-for-sale investment securities			541,715				133				(7,657	)			—				534,191
Held-to-maturity
Obligations of state and political agencies			106,571				1				(6,676	)			68				99,896
Mortgage backed securities
Residential agency			136,060				—				(20,722	)			47				115,338
Total held-to-maturity investment securities			242,631				1				(27,398	)			115				215,234
Total investment securities		$	784,346			$	134			$	(35,055	)		$	115			$	749,425

		*December 31, 2025*
		*Amortized*				*Unrealized*				*Unrealized*				*Allowance for*				*Fair*
(dollars in thousands)		*Cost*				*Gains*				*Losses*				*Credit Losses*				*Value*
Available-for-sale
U.S. Treasury and agencies		$	406			$	—			$	(1	)			—			$	405
Mortgage backed securities
Residential agency			476,334				988				(576	)			—				476,746
Asset backed securities			15				—				—				—				15
Corporate bonds			39,982				—				(3,053	)			—				36,929
Total available-for-sale investment securities			516,737				988				(3,630	)			—				514,095
Held-to-maturity
Obligations of state and political agencies			111,866				1				(6,462	)			72				105,405
Mortgage backed securities
Residential agency			142,705				—				(20,101	)			51				122,604
Total held-to-maturity investment securities			254,571				1				(26,563	)			123				228,009
Total investment securities		$	771,308			$	989			$	(30,193	)		$	123			$	742,104

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

						*June 30, 2026*
						*Less than 12 Months*								*Over 12 Months*								*Total*
		*Number of*				*Unrealized*				*Fair*				*Unrealized*				*Fair*				*Unrealized*				*Fair*
(dollars in thousands)		*Holdings*				*Losses*				*Value*				*Losses*				*Value*				*Losses*				*Value*
Available-for-sale
U.S. Treasury and agencies			7			$	(40	)		$	12,852			$	(1	)		$	334			$	(41	)		$	13,186
Mortgage backed securities
Residential agency			55				(5,858	)			439,937				(25	)			1,540				(5,883	)			441,477
Asset backed securities			3				—				12				—				1				—				13
Corporate bonds			6				—				—				(1,733	)			34,767				(1,733	)			34,767
Total available-for-sale investment securities			71			$	(5,898	)		$	452,801			$	(1,759	)		$	36,642			$	(7,657	)		$	489,443

						*December 31, 2025*
						*Less than 12 Months*								*Over 12 Months*								*Total*
		*Number of*				*Unrealized*				*Fair*				*Unrealized*				*Fair*				*Unrealized*				*Fair*
(dollars in thousands)		*Holdings*				*Losses*				*Value*				*Losses*				*Value*				*Losses*				*Value*
Available-for-sale
U.S. Treasury and agencies			2			$	(1	)		$	198			$	—			$	199			$	(1	)		$	397
Mortgage backed securities
Residential agency			39				(541	)			317,084				(35	)			4,908				(576	)			321,992
Asset backed securities			1				—				—				—				1				—				1
Corporate bonds			8				(4	)			478				(3,049	)			36,452				(3,053	)			36,930
Total available-for-sale investment securities			50			$	(546	)		$	317,760			$	(3,084	)		$	41,560			$	(3,630	)		$	359,320

Investments Classified by Contractual Maturity Date [Table Text Block]

		*Held-to-maturity*								*Available-for-sale*
		*Carrying*				*Fair*				*Amortized*				*Fair*
(dollars in thousands)		*Value*				*Value*				*Cost*				*Value*
Due within one year or less		$	13,675			$	13,569			$	—			$	—
Due after one year through five years			58,952				55,527				2,647				2,573
Due after five years through ten years			28,741				26,133				39,070				37,416
Due after 10 years			5,203				4,667				14,556				14,549
			106,571				99,896				56,273				54,538
Mortgage-backed securities
Residential agency			136,060				115,338				485,442				479,653
Total investment securities		$	242,631			$	215,234			$	541,715			$	534,191

Investment [Table Text Block]

		*June 30,*				*December 31,*
(dollars in thousands)		*2026*				*2025*
Federal Reserve		$	8,631			$	8,631
FHLB			19,604				17,968