Note 3 - Investment Securities (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

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

	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
March 31, 2025
Debt Securities, Available-for-Sale:
U.S. Treasury notes	$	67,674		—		3,750		63,924
U.S. Agency notes		83,384		—		5,000		78,384
Corporate bonds		8,200		15		422		7,793
U.S. Agency mortgage-backed securities		75,467		3		7,620		67,850
Municipal securities:
Non-taxable		4,239		—		243		3,996
Taxable		36,585		—		2,641		33,944
	$	275,549		18		19,676		255,891
Debt Securities, Held-to-Maturity:
Municipal securities:
Non-taxable	$	14,456		—		1,059		13,397
Taxable		3,129		—		324		2,805
	$	17,585		—		1,383		16,202
December 31, 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	$	13,195		—		922		12,273
Taxable		3,129		—		474		2,655
	$	16,324		—		1,396		14,928

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

	Less than Twelve Months				Twelve Months or Greater
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
March 31, 2025
Available-for-Sale:
U.S. Treasury notes	$	—		—		63,924		3,750
U.S. Agency notes		4,110		34		74,274		4,966
Corporate bonds		—		—		6,278		422
U.S. Agency mortgage-backed securities		5,805		18		61,799		7,602
Municipal securities:
Non-taxable		—		—		3,995		243
Taxable		—		—		33,884		2,641
	$	9,915		52		244,154		19,624
Held-to-Maturity:
Municipal securities:
Non-taxable	$	3,619		58		9,370		1,001
Taxable		—		—		2,805		324
	$	3,619		58		12,175		1,325
December 31, 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

Investments Classified by Contractual Maturity Date [Table Text Block]

	Available-for-Sale				Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due within one year	$	26,722		26,278		64		63
Due from one to five years		144,868		135,199		991		966
Due from five to ten years		28,493		26,564		9,523		8,828
Due after ten years		—		—		7,007		6,345
		200,083		188,041		17,585		16,202
U.S. Agency mortgage-backed securities		75,466		67,850		—		—
	$	275,549		255,891		17,585		16,202

Gain (Loss) on Securities [Table Text Block]

	Three Months Ended
	March 31,
	2025		2024
Proceeds from sales	$	—		9,615
Gross realized gains		—		—
Gross realized losses		—		214

Marketable Securities [Table Text Block]

	March 31, 2025				December 31, 2024
	Amortized		Fair		Amortized		Fair
	Cost		Value		Cost		Value
Mutual Funds	$	1,461		1,293		1,451		1,265
Equity Securities		10		94		10		98
Total equity securities with a readily determinable fair value	$	1,471		1,387		1,461		1,363

	Three Months Ended
	March 31,
	2025		2024
Net gains (losses) recognized during the period on equity securities	$	14		(10	)
Less net gains (losses) recognized during the period on equity securities sold during the period		—		—
Net unrealized gains (losses) recognized during the reporting period on equity securities still held at period end	$	14		(10	)