Note 3 - Investments (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Investment [Table Text Block]

	September 30, 2023
								Estimated
	Amortized		Unrealized		Unrealized			Fair
SECURITIES AVAILABLE-FOR-SALE	Cost		Gains		Losses			Values		ACL
U.S. agency securities	$	21,152	$	42	$	(4,098	)	$	17,096	$	—
Corporate securities		7,000		41		(687	)		6,354		—
Municipal bonds		139,237		1		(30,617	)		108,621		—
Mortgage-backed securities		104,097		45		(14,535	)		89,607		—
U.S. Small Business Administration securities		32,313		—		(2,074	)		30,239		—
Total securities available-for-sale		303,799		129		(52,011	)		251,917		—
SECURITIES HELD-TO-MATURITY
Corporate securities		8,500		—		(1,076	)		7,424		45
Total securities held-to-maturity		8,500		—		(1,076	)		7,424		45
Total securities	$	312,299	$	129	$	(53,087	)	$	259,341	$	45

	December 31, 2022
								Estimated
	Amortized		Unrealized		Unrealized			Fair
SECURITIES AVAILABLE-FOR-SALE	Cost		Gains		Losses			Values		ACL
U.S. agency securities	$	21,153	$	—	$	(3,865	)	$	17,288	$	—
Corporate securities		9,497		27		(979	)		8,545		—
Municipal bonds		144,200		21		(23,619	)		120,602		—
Mortgage-backed securities		82,424		—		(12,458	)		69,966		—
U.S. Small Business Administration securities		14,519		—		(1,668	)		12,851		—
Total securities available-for-sale		271,793		48		(42,589	)		229,252		—
SECURITIES HELD-TO-MATURITY
Corporate securities		8,500		—		(571	)		7,929		31
Total securities held-to-maturity		8,500		—		(571	)		7,929		31
Total securities	$	280,293	$	48	$	(43,160	)	$	237,181	$	31

Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block]

SECURITIES HELD-TO-MATURITY	For the Three Months Ended September 30,
Corporate Securities	2023		2022
Beginning allowance balance	$	31	$	31
Provision for credit losses		14		—
Total ending allowance balance	$	45	$	31

SECURITIES HELD-TO-MATURITY	For the Nine Months Ended September 30,
Corporate Securities	2023		2022
Beginning allowance balance	$	31	$	—
Impact of adopting ASU 2016-13		—		72
Provision (recapture) for credit losses		14		(41	)
Total ending allowance balance	$	45	$	31

Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block]

	September 30,		December 31,
Corporate securities	2023		2022
BBB/BBB-	$	7,000	$	8,500
BB+		1,500		—
Total	$	8,500	$	8,500

Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block]

	September 30, 2023
Purpose or beneficiary	Carrying Value		Amortized Cost		Fair Value
State and local government public deposits	$	36,866	$	45,834	$	36,866
Federal Reserve Bank - Bank Term Funding Program facility		73,722		90,399		73,722
Total pledged securities	$	110,588	$	136,233	$	110,588

Schedule of Unrealized Loss on Investments [Table Text Block]

	September 30, 2023
	Less than 12 Months					12 Months or Longer					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
SECURITIES AVAILABLE-FOR-SALE	Value		Losses			Value		Losses			Value		Losses
U.S. agency securities	$	—	$	—		$	15,054	$	(4,098	)	$	15,054	$	(4,098	)
Corporate securities		—		—			4,313		(687	)		4,313		(687	)
Municipal bonds		5,599		(217	)		102,969		(30,400	)		108,568		(30,617	)
Mortgage-backed securities		18,216		(84	)		65,134		(14,451	)		83,350		(14,535	)
U.S. Small Business Administration securities		21,646		(382	)		8,593		(1,692	)		30,239		(2,074	)
Total securities available-for-sale		45,461		(683	)		196,063		(51,328	)		241,524		(52,011	)
SECURITIES HELD-TO-MATURITY
Corporate securities		—		—			7,424		(1,076	)		7,424		(1,076	)
Total securities held-to-maturity		—		—			7,424		(1,076	)		7,424		(1,076	)
Total securities	$	45,461	$	(683	)	$	203,487	$	(52,404	)	$	248,948	$	(53,087	)

	December 31, 2022
	Less than 12 Months					12 Months or Longer					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
SECURITIES AVAILABLE-FOR-SALE	Value		Losses			Value		Losses			Value		Losses
U.S. agency securities	$	3,823	$	(118	)	$	13,465	$	(3,747	)	$	17,288	$	(3,865	)
Corporate securities		2,494		(4	)		4,026		(975	)		6,520		(979	)
Municipal bonds		44,261		(5,794	)		73,990		(17,825	)		118,251		(23,619	)
Mortgage-backed securities		29,791		(3,188	)		40,175		(9,270	)		69,966		(12,458	)
U.S. Small Business Administration securities		10,807		(1,162	)		2,044		(506	)		12,851		(1,668	)
Total securities available-for-sale		91,176		(10,266	)		133,700		(32,323	)		224,876		(42,589	)
SECURITIES HELD-TO-MATURITY
Corporate securities		7,929		(571	)		—		—			7,929		(571	)
Total securities held-to-maturity		7,929		(571	)		—		—			7,929		(571	)
Total securities	$	99,105	$	(10,837	)	$	133,700	$	(32,323	)	$	232,805	$	(43,160	)

Investments Classified by Contractual Maturity Date [Table Text Block]

	September 30,				December 31,
	2023				2022
SECURITIES AVAILABLE-FOR-SALE	Amortized		Fair		Amortized		Fair
U.S. agency securities	Cost		Value		Cost		Value
Due within one year	$	927	$	912	$	—	$	—
Due after one year through five years		3,944		3,405		4,874		4,321
Due after five years through ten years		11,971		9,614		6,989		5,963
Due after ten years		4,310		3,165		9,290		7,004
Subtotal		21,152		17,096		21,153		17,288
Corporate securities
Due within one year		1,000		1,009		1,000		997
Due after one year through five years		—		—		2,497		2,519
Due after five years through ten years		4,000		3,913		4,000		3,763
Due after ten years		2,000		1,432		2,000		1,266
Subtotal		7,000		6,354		9,497		8,545
Municipal bonds
Due within one year		1,019		1,002		2,660		2,644
Due after one year through five years		37		36		1,038		1,012
Due after five years through ten years		6,255		5,525		6,341		5,771
Due after ten years		131,926		102,058		134,161		111,175
Subtotal		139,237		108,621		144,200		120,602
Mortgage-backed securities
Federal National Mortgage Association (“FNMA”)		71,822		59,197		68,421		57,358
Federal Home Loan Mortgage Corporation (“FHLMC”)		28,032		26,907		9,290		8,424
Government National Mortgage Association (“GNMA”)		4,243		3,503		4,713		4,184
Subtotal		104,097		89,607		82,424		69,966
U.S. Small Business Administration securities
Due within one year		198		195		—		—
Due after one year through five years		1,889		1,777		2,553		2,407
Due after five years through ten years		13,685		13,105		4,461		3,996
Due after ten years		16,541		15,162		7,505		6,448
Subtotal		32,313		30,239		14,519		12,851
Total securities available-for-sale		303,799		251,917		271,793		229,252
SECURITIES HELD-TO-MATURITY
Corporate securities
Due after five years through ten years		8,500		7,424		8,500		7,929
Total securities held-to-maturity		8,500		7,424		8,500		7,929
Total securities	$	312,299	$	259,341	$	280,293	$	237,181