Securities Available for Sale (Tables)

12 Months Ended

Dec. 31, 2020

Investments Debt And Equity Securities [Abstract]

Summary of the Amortized Cost and Fair Value of Available-for-Sale Investment Securities Corresponding Amounts of Unrealized Gains and Losses

The following table summarizes the amortized cost and fair value of the available-for-sale securities portfolio at December 31, 2020 and 2019 and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) were as follows:

				Gross		Gross
		Amortized		Unrealized		Unrealized
	2020	Cost		Gains		Losses			Fair Value
U.S. Treasury and U.S. government sponsored    entities		$	11,798	$	101	$	(54	)	$	11,845
State and political subdivisions			344,160		22,350		(204	)		366,306
Corporate bonds			3,582		132		(2	)		3,712
Mortgage-backed securities - residential			157,106		4,919		(243	)		161,782
Collateralized mortgage obligations			25,654		742		(3	)		26,393
Small Business Administration			5,411		151		0			5,562
Totals		$	547,711	$	28,395	$	(506	)	$	575,600

				Gross		Gross
		Amortized		Unrealized		Unrealized
	2019	Cost		Gains		Losses			Fair Value
U.S. Treasury and U.S. government sponsored    entities		$	3,773	$	41	$	(3	)	$	3,811
State and political subdivisions			250,905		10,944		(424	)		261,425
Corporate bonds			1,238		22		0			1,260
Mortgage-backed securities - residential			145,886		2,396		(372	)		147,910
Collateralized mortgage obligations			11,459		101		(213	)		11,347
Small Business Administration			6,534		0		(54	)		6,480
Totals		$	419,795	$	13,504	$	(1,066	)	$	432,233

Proceeds from Sales of Available-for-Sale Securities and the Associated Gains and Losses

The proceeds from sales of available-for-sale securities and the associated gains and losses were as follows:

		2020			2019			2018
Proceeds	$	60,341		$	33,424		$	16,162
Gross gains		394			211			408
Gross losses		(824	)		(222	)		(125	)

Amortized Cost and Fair Value of the Debt Securities Maturity

The amortized cost and fair value of the debt securities portfolio are shown by expected maturity. Expected maturities may differ from contractual maturities if issuers have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately.

Available for sale	December 31, 2020
	Amortized
Maturity	Cost		Fair Value
Within one year	$	3,132	$	3,181
One to five years		4,808		5,052
Five to ten years		32,972		34,580
Beyond ten years		318,628		339,050
Mortgage-backed securities, collateralized mortgage    obligations and Small Business Administration		188,171		193,737
Totals	$	547,711	$	575,600

Investment Securities with Unrealized Losses

The following table summarizes the investment securities with unrealized losses at December 31, 2020 and 2019 aggregated by major security type and length of time in a continuous unrealized loss position.

2020
	Less than 12 Months					12 Months or More				Total
	Fair		Unrealized			Fair		Unrealized		Fair		Unrealized
Description of Securities	Value		Loss			Value		Loss		Value		Loss
U.S. Treasury and U.S. government
sponsored entities	$	8,153	$	(54	)	$	0	$	0	$	8,153	$	(54	)
State and political subdivisions		19,205		(204	)		0		0		19,205		(204	)
Corporate bonds		198		(2	)		0		0		198		(2	)
Mortgage-backed securities - residential		63,401		(243	)		0		0		63,401		(243	)
Collateralized mortgage obligations		294		(3	)		0		0		294		(3	)
Small Business Administration		0		0			0		0		0		0
Total temporarily impaired	$	91,251	$	(506	)	$	0	$	0	$	91,251	$	(506	)

2019
	Less than 12 Months					12 Months or More					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
Description of Securities	Value		Loss			Value		Loss			Value		Loss
U.S. Treasury and U.S. government
sponsored entities	$	0	$	0		$	622	$	(3	)	$	622	$	(3	)
State and political subdivisions		30,887		(424	)		0		0			30,887		(424	)
Corporate bonds		0		0			100		0			100		0
Mortgage-backed securities - residential		14,435		(98	)		22,381		(274	)		36,816		(372	)
Collateralized mortgage obligations		1,198		(18	)		7,935		(195	)		9,133		(213	)
Small Business Administration		6,479		(54	)		1		0			6,480		(54	)
Total temporarily impaired	$	52,999	$	(594	)	$	31,039	$	(472	)	$	84,038	$	(1,066	)