Note 3 - Investment Securities (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

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

	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
2024
Debt Securities Available-for-Sale:
U.S. Treasury notes	$	70,934		—		4,754		66,180
U.S. Agency notes		83,770		—		6,253		77,517
Corporate Bonds		8,200		5		449		7,756
U.S. Agency mortgage-backed securities		78,869		3		9,326		69,546
Municipal securities:
Non-taxable		4,248		—		266		3,982
Taxable		36,599		—		3,253		33,346
	$	282,620		8		24,301		258,327
Debt Securities Held-to-Maturity:
Municipal securities:
Non-taxable	$	13,200		—		922		12,278
Taxable		3,129		—		474		2,655
	$	16,329		—		1,396		14,933
2023
Debt Securities Available-for-Sale:
U.S. Treasury notes	$	74,404		—		6,202		68,202
U.S. Agency notes		88,978		—		8,077		80,901
Corporate Bonds		7,450		—		916		6,534
U.S. Agency mortgage-backed securities		81,634		2		8,846		72,790
Municipal securities:
Non-taxable		7,416		—		245		7,171
Taxable		44,923		1		3,921		41,003
	$	304,805		3		28,207		276,601
Debt Securities Held-to-Maturity:
Municipal securities:
Non-taxable	$	13,580		4		872		12,712
Taxable		3,283		—		316		2,967
	$	16,863		4		1,188		15,679

Unrealized Gain (Loss) on Investments [Table Text Block]

	Less Than Twelve Months				Twelve Months or More
	Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses
2024
Available-for-Sale:
U.S. Treasury notes	$	3,232		—		62,948		4,754
U.S. Agency notes		3,991		137		73,526		6,116
Corporate Bonds		743		7		6,258		442
U.S. Agency mortgage-backed securities		5,806		180		63,539		9,146
Municipal securities:
Non-taxable		—		—		3,982		266
Taxable		—		—		33,286		3,253
	$	13,772		324		243,539		23,977
Held-to-Maturity:
Municipal securities:
Non-taxable	$	2,283		17		9,578		905
Taxable		—		—		2,655		474
	$	2,283		17		12,233		1,379
2023
Available-for-Sale:
U.S. Treasury notes	$	—		—		68,202		6,202
U.S. Agency notes		—		—		80,901		8,077
Corporate Bonds		734		16		5,800		900
U.S. Agency mortgage-backed securities		—		—		72,287		8,846
Municipal securities:
Non-taxable		1,540		10		5,631		235
Taxable		—		—		40,392		3,921
	$	2,274		26		273,213		28,181
Held-to-Maturity:
Municipal securities:
Non-taxable	$	6,012		476		5,975		396
Taxable		—		—		2,966		316
	$	6,012		476		8,941		712

Investments Classified by Contractual Maturity Date [Table Text Block]

	Available-for-Sale				Held-to-Maturity
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Due within one year	$	29,992		29,317		64		63
Due from one to five years		143,031		131,434		991		961
Due from five to ten years		30,728		28,030		9,638		9,007
Due after ten years		—		—		5,636		4,902
		203,751		188,781		16,329		14,933
U.S. Agency mortgage-backed securities		78,869		69,546		—		—
	$	282,620		258,327		16,329		14,933

Gain (Loss) on Securities [Table Text Block]

	2024		2023		2022
Proceeds from sales	$	9,615		5,210		—
Gross realized gains		—		—		—
Gross realized losses		214		—		—

Marketable Securities [Table Text Block]

	2024				2023
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Mutual funds	$	1,451		1,265		1,415		1,240
Equity securities		10		98		10		96
Total equity securities with a readily determinable fair value	$	1,461		1,363		1,425		1,336

	2024			2023			2022
Net losses recognized during the period on equity securities	$	(9	)		(5	)		(292	)
Less net losses recognized on equity securities sold during the period		—			(61	)		—
Net unrealized gains (losses) recognized during the reporting period on equity securities still held at period end	$	(9	)		56			(292	)