Securities (Tables)

3 Months Ended

Mar. 31, 2019

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 investment securities portfolio at March 31, 2019 and December 31, 2018 and the corresponding amounts of unrealized gains and losses recognized in accumulated other comprehensive income:

			Gross		Gross
(In Thousands of Dollars)	Amortized		Unrealized		Unrealized
	Cost		Gains		Losses			Fair Value
March 31, 2019
U.S. Treasury and U.S. government sponsored entities	$	5,911	$	4	$	(68	)	$	5,847
State and political subdivisions		211,197		4,080		(541	)		214,736
Corporate bonds		1,206		4		(7	)		1,203
Mortgage-backed securities - residential		151,555		241		(2,188	)		149,608
Collateralized mortgage obligations - residential		21,196		162		(673	)		20,685
Small Business Administration		11,936		0		(245	)		11,691
Totals	$	403,001	$	4,491	$	(3,722	)	$	403,770

			Gross		Gross
(In Thousands of Dollars)	Amortized		Unrealized		Unrealized
	Cost		Gains		Losses			Fair Value
December 31, 2018
U.S. Treasury and U.S. government sponsored entities	$	6,111	$	0	$	(102	)	$	6,009
State and political subdivisions		211,762		2,075		(1,893	)		211,944
Corporate bonds		1,206		0		(18	)		1,188
Mortgage-backed securities - residential		154,130		84		(4,167	)		150,047
Collateralized mortgage obligations - residential		21,775		72		(775	)		21,072
Small Business Administration		12,292		0		(362	)		11,930
Totals	$	407,276	$	2,231	$	(7,317	)	$	402,190

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.

	March 31, 2019
(In Thousands of Dollars)	Amortized Cost		Fair Value
Maturity
Within one year	$	6,076	$	6,095
One to five years		35,119		35,397
Five to ten years		152,330		155,259
Beyond ten years		24,789		25,035
Mortgage-backed, collateralized mortgage obligations and Small Business Administration securities		184,687		181,984
Total	$	403,001	$	403,770

Available for Sale Investment Securities with Unrealized Losses

The following table summarizes the investment securities with unrealized losses at March 31, 2019 and December 31, 2018, aggregated by major security type and length of time in a continuous unrealized loss position.

	Less than 12 Months					12 Months or Longer					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(In Thousands of Dollars)	Value		Loss			Value		Loss			Value		Loss
March 31, 2019
U.S. Treasury and U.S. government sponsored entities	$	0	$	0		$	5,098	$	(68	)	$	5,098	$	(68	)
State and political subdivisions		3,039		(7	)		38,090		(534	)		41,129		(541	)
Corporate bonds		0		0			678		(7	)		678		(7	)
Mortgage-backed securities - residential		22		0			129,244		(2,188	)		129,266		(2,188	)
Collateralized mortgage obligations - residential		0		0			13,560		(673	)		13,560		(673	)
Small Business Administration		7		0			11,684		(245	)		11,691		(245	)
Total temporarily impaired	$	3,068	$	(7	)	$	198,354	$	(3,715	)	$	201,422	$	(3,722	)

	Less than 12 Months					12 Months or Longer					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(In Thousands of Dollars)	Value		Loss			Value		Loss			Value		Loss
December 31, 2018
U.S. Treasury and U.S. government sponsored entities	$	648	$	(2	)	$	5,065	$	(100	)	$	5,713	$	(102	)
State and political subdivisions		23,569		(201	)		64,174		(1,692	)		87,743		(1,893	)
Corporate bonds		516		(4	)		672		(14	)		1,188		(18	)
Mortgage-backed securities - residential		13,002		(114	)		126,200		(4,053	)		139,202		(4,167	)
Collateralized mortgage obligations - residential		20		(1	)		14,003		(774	)		14,023		(775	)
Small Business Administration		11		0			11,919		(362	)		11,930		(362	)
Total temporarily impaired	$	37,766	$	(322	)	$	222,033	$	(6,995	)	$	259,799	$	(7,317	)