Note 4 - Securities (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Available-for-sale Securities [Table Text Block]

	September 30, 2020
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Government agencies and corporations	$	57,906	$	4,712	$	25	$	62,593
State and political subdivisions		157,528		5,936		350		163,114
Mortgage-backed securities		254,025		4,363		64		258,324
Corporate debt securities		3,001		319		---		3,320
Total securities available for sale	$	472,460	$	15,330	$	439	$	487,351

	December 31, 2019
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Government agencies and corporations	$	119,903	$	1,995	$	775	$	121,123
State and political subdivisions		88,092		791		644		88,239
Mortgage-backed securities		223,173		45		1,435		221,783
Corporate debt securities		3,998		120		---		4,118
Total securities available for sale	$	435,166	$	2,951	$	2,854	$	435,263

Investments Classified by Contractual Maturity Date [Table Text Block]

	September 30, 2020
	Amortized Cost		Fair Value
Available for Sale:
Due in one year or less	$	8,732	$	8,806
Due after one year through five years		4,837		5,010
Due after five years through ten years		130,312		135,038
Due after ten years		328,579		338,497
Total securities available for sale	$	472,460	$	487,351

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

	September 30, 2020
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily Impaired Securities:
U.S. Government agencies and corporations	$	4,972	$	25	$	---	$	---
State and political subdivisions		26,545		338		626		12
Mortgage-backed securities		17,760		60		5,011		4
Total	$	49,277	$	423	$	5,637	$	16

	December 31, 2019
	Less Than 12 Months				12 Months or More
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Temporarily Impaired Securities:
U.S. Government agencies and corporations	$	53,244	$	738	$	38,962	$	37
State and political subdivisions		35,934		596		591		48
Mortgage-backed securities		181,279		1,435		---		---
Total	$	270,457	$	2,769	$	39,553	$	85