Note 6 - Investment and Equity Securities (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

	March 31, 2025
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
(Dollar amounts in thousands)	Cost (a)		Gains		Losses			Value
Subordinated debt	$	34,300	$	86	$	(1,557	)	$	32,829
Obligations of states and political subdivisions:
Tax-exempt		147,634		4		(23,787	)		123,851
Mortgage-backed securities in government-sponsored entities		8,953		25		(644	)		8,334
Total	$	190,887	$	115	$	(25,988	)	$	165,014

	December 31, 2024
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
(Dollar amounts in thousands)	Cost (a)		Gains		Losses			Value
Subordinated debt	$	34,300	$	67	$	(1,898	)	$	32,469
Obligations of states and political subdivisions:
Tax-exempt		147,767		4		(22,805	)		124,966
Mortgage-backed securities in government-sponsored entities		9,144		1		(778	)		8,367
Total	$	191,211	$	72	$	(25,481	)	$	165,802

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized		Fair
(Dollar amounts in thousands)	Cost		Value
Due in one year or less	$	590	$	591
Due after one year through five years		6,816		6,664
Due after five years through ten years		57,517		54,754
Due after ten years		125,964		103,005
Total	$	190,887	$	165,014

Gain (Loss) on Securities [Table Text Block]

	March 31, 2025
	Less than Twelve Months					Twelve Months or Greater					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Dollar amounts in thousands)	Value		Losses			Value		Losses			Value		Losses
Subordinated debt	$	2,660	$	(90	)	$	27,333	$	(1,467	)	$	29,993	$	(1,557	)
Obligations of states and political subdivisions:
Tax-exempt		11,486		(414	)		105,341		(23,373	)		116,827		(23,787	)
Mortgage-backed securities in government-sponsored entities		1,400		(24	)		5,082		(620	)		6,482		(644	)
Total	$	15,546	$	(528	)	$	137,756	$	(25,460	)	$	153,302	$	(25,988	)

	December 31, 2024
	Less than Twelve Months					Twelve Months or Greater					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Dollar amounts in thousands)	Value		Losses			Value		Losses			Value		Losses
Subordinated debt	$	10,632	$	(368	)	$	20,770	$	(1,530	)	$	31,402	$	(1,898	)
Obligations of states and political subdivisions:
Tax-exempt		15,456		(487	)		102,484		(22,318	)		117,940		(22,805	)
Mortgage-backed securities in government-sponsored entities		1,986		(49	)		5,118		(729	)		7,104		(778	)
Total	$	28,074	$	(904	)	$	128,372	$	(24,577	)	$	156,446	$	(25,481	)