Note 6 - Securities Available-for-Sale and Held-to-Maturity (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Debt Securities, Available-for-Sale [Table Text Block]

			Gross		Gross
March 31, 2023	Amortized		Unrealized		Unrealized		Estimated
	Cost		Gains		Losses		Fair Value
Securities available-for-sale
Mortgage backed securities	$	104,478	$	6	$	8,948	$	95,536
State, County, Municipals		134,667		24		28,930		105,761
Other securities		500	$	-	$	57	$	443
Total	$	239,645	$	30	$	37,935	$	201,740

			Gross		Gross
December 31, 2022	Amortized		Unrealized		Unrealized		Estimated
	Cost		Gains		Losses		Fair Value
Securities available-for-sale
Mortgage backed securities	$	107,055	$	-	$	10,083	$	96,972
State, County, Municipals		134,906		-		30,993		103,913
Other securities		500		-		63		437
Total	$	242,461	$	-	$	41,139	$	201,322

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

			Gross		Gross
March 31, 2023	Amortized		Unrealized		Unrealized		Estimated
	Cost		Gains		Losses		Fair Value
Securities held-to-maturity
Obligations of U.S.
Government agencies	$	4,018	$	-	$	364	$	3,654
Mortgage backed securities		305,356		-		21,219		284,137
State, County, Municipals		92,863		-		4,702		88,161
Total	$	402,237	$	-	$	26,285	$	375,952

			Gross		Gross
December 31, 2022	Amortized		Unrealized		Unrealized		Estimated
	Cost		Gains		Losses		Fair Value
Securities held-to-maturity
Obligations of U.S.
Government agencies	$	4,002	$	-	$	367	$	3,635
Mortgage backed securities		309,748		-		24,654		285,094
State, County, Municipals		92,840		-		6,277		86,563
Total	$	406,590	$	-	$	31,298	$	375,292

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

	March 31, 2023		December 31, 2022
Aaa	$	16,791	$	18,096
Aa1 to Aa3		41,492		40,174
Not Rated (1)		34,580		34,570
	$	92,863	$	92,840

Schedule of Unrealized Loss on Investments [Table Text Block]

March 31, 2023
Available-for-sale	Less than 12 months				12 months or more				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
Description of Securities	Value		Losses		Value		Losses		Value		Losses
Mortgage backed securities	$	55,492	$	1,878	$	36,256	$	7,070	$	91,748	$	8,948
State, County, Municipal		16,842		466		87,008		28,464		103,850		28,930
Other securities		-		-		443		57		443		57
Total	$	72,334	$	2,344	$	123,707	$	35,591	$	196,041	$	37,935

Held-to-maturity	Less than 12 months				12 months or more				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
Description of Securities	Value		Losses		Value		Losses		Value		Losses
Obligations of U.S. government agencies	$	-	$	-	$	3,654	$	364	$	3,654	$	364
Mortgage backed securities		-		-		284,137		21,219		284,137		21,219
State, County, Municipal		-		-		88,161		4,702		88,161		4,702
Total	$	-	$	-	$	375,952	$	26,285	$	375,952	$	26,285

December 31, 2022
Available-for-sale	Less than 12 months				12 months or more				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
Description of Securities	Value		Losses		Value		Losses		Value		Losses
Mortgage backed securities	$	70,652	$	3,838	$	26,320	$	6,245	$	96,972	$	10,083
State, County, Municipal		45,200		9,027		58,713		21,966		103,913		30,993
Other securities		-		-		437		63		437		63
Total	$	115,852	$	12,865	$	85,470	$	28,274	$	201,322	$	41,139

Held-to-maturity	Less than 12 months				12 months or more				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
Description of Securities	Value		Losses		Value		Losses		Value		Losses
Obligations of U.S. government agencies	$	-	$	-	$	3,635	$	367	$	3,635	$	367
Mortgage backed securities		17,882		1,332		267,212		23,322		285,094		24,654
State, County, Municipal		15,059		781		71,504		5,496		86,563		6,277
Total	$	32,941	$	2,113	$	342,351	$	29,185	$	375,292	$	31,298

Investments Classified by Contractual Maturity Date [Table Text Block]

	Available-for-sale				Held-to-maturity
	Amortized		Estimated		Amortized		Estimated
	Cost		Fair Value		Cost		Fair Value
Due in one year or less	$	720	$	663	$	-	$	-
Due after one year through five years		3,155		3,076		-		-
Due after five years through ten years		5,275		5,008		-		-
Due after ten years		126,017		97,457		96,881		91,815
Residential mortgage backed securities		91,827		83,144		246,433		229,613
Commercial mortgage backed securities		12,651		12,392		58,923		54,524
Total	$	239,645	$	201,740	$	402,237	$	375,952