Note 4 - Securities (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

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

	June 30, 2022
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Treasuries	$	990	$	-	$	35	$	955
U.S. Government agencies and corporations		369,410		152		35,141		334,421
States and political subdivisions		193,019		103		29,341		163,781
Mortgage-backed securities		183,047		27		5,894		177,180
Corporate debt securities		6,500		-		586		5,914
Total securities available for sale	$	752,966	$	282	$	70,997	$	682,251

	December 31, 2021
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Government agencies and corporations	$	279,934	$	2,795	$	4,710	$	278,019
States and political subdivisions		195,365		5,314		2,007		198,672
Mortgage-backed securities		204,164		2,323		313		206,174
Corporate debt securities		3,004		248		37		3,215
Total securities available for sale	$	682,467	$	10,680	$	7,067	$	686,080

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2022
	Amortized Cost		Fair Value
Available for Sale:
Due in one year or less	$	3,768	$	3,745
Due after one year through five years		104,168		100,560
Due after five years through ten years		328,929		298,257
Due after ten years		316,101		279,689
Total securities available for sale	$	752,966	$	682,251

Schedule of Temporary Impairment Losses, Investments [Table Text Block]

	June 30, 2022
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
U.S. Treasuries	$	955	$	35	$	-	$	-
U.S. Government agencies and corporations		262,561		22,913		64,695		12,228
States and political subdivisions		120,556		20,031		32,812		9,310
Mortgage-backed securities		164,176		5,302		9,442		592
Corporate debt securities		5,914		586		-		-
Total temporarily impaired securities	$	554,162	$	48,867	$	106,949	$	22,130

	December 31, 2021
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
U.S. Government agencies and corporations	$	201,650	$	3,530	$	26,792	$	1,180
States and political subdivisions		50,659		1,214		20,542		793
Mortgage-backed securities		13,139		141		4,665		172
Corporate debt securities		966		37		-		-
Total temporarily impaired securities	$	266,414	$	4,922	$	51,999	$	2,145