Note 4 - Securities (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Available-for-sale Securities [Table Text Block]

	June 30, 2021
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Government agencies and corporations	$	182,123	$	3,614	$	2,101	$	183,636
States and political subdivisions		197,399		6,143		1,728		201,814
Mortgage-backed securities		225,994		4,128		123		229,999
Corporate debt securities		2,001		306		-		2,307
Total securities available for sale	$	607,517	$	14,191	$	3,952	$	617,756

	December 31, 2020
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses		Fair Values
Available for Sale:
U.S. Government agencies and corporations	$	86,859	$	4,477	$	173	$	91,163
States and political subdivisions		196,435		7,778		252		203,961
Mortgage-backed securities		244,780		4,473		78		249,175
Corporate debt securities		2,001		442		-		2,443
Total securities available for sale	$	530,075	$	17,170	$	503	$	546,742

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2021
	Amortized Cost		Fair Value
Available for Sale:
Due in one year or less	$	1,377	$	1,396
Due after one year through five years		5,431		5,550
Due after five years through ten years		229,995		232,759
Due after ten years		370,714		378,051
Total securities available for sale	$	607,517	$	617,756

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

	June 30, 2021
	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	$	90,558	$	2,101	$	-	$	-
States and political subdivisions		57,581		1,538		7,709		190
Mortgage-backed securities		6,046		2		5,187		121
Total	$	154,185	$	3,641	$	12,896	$	311

	December 31, 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	$	28,798	$	173	$	-	$	-
States and political subdivisions		32,353		249		635		3
Mortgage-backed securities		8,816		76		4,060		2
Total	$	69,967	$	498	$	4,695	$	5