The following table summarizes the amortized cost and fair value of the available for sale investment securities portfolio at June 30, 2019 and December 31, 2018 and the corresponding amounts of unrealized gains and losses recognized in accumulated other comprehensive income:

			Gross		Gross
	Amortized		Unrealized		Unrealized
(In Thousands of Dollars)	Cost		Gains		Losses			Fair Value
June 30, 2019
U.S. Treasury and U.S. government sponsored entities	$	5,861	$	30	$	(9	)	$	5,882
State and political subdivisions		222,738		8,580		0			231,318
Corporate bonds		1,419		14		(1	)		1,432
Mortgage-backed securities - residential		152,506		1,747		(504	)		153,749
Collateralized mortgage obligations - residential		20,514		454		(319	)		20,649
Small Business Administration		11,243		34		(55	)		11,222
Totals	$	414,281	$	10,859	$	(888	)	$	424,252

			Gross		Gross
	Amortized		Unrealized		Unrealized
(In Thousands of Dollars)	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

Proceeds from the sale of portfolio securities were $500 thousand and $10.3 million during the three and six month periods ended June 30, 2019, respectively. Gross gains of $2 and $24 thousand along with gross losses of $2 and $57 thousand were realized on these sales during the three and six month periods ended June 30, 2019. $19 thousand of unrealized losses during the three month period and $25 thousand of unrealized gains during the six month period were recognized in the income statement for equity securities as a result of adoption of ASU 2016-01. Proceeds from the sale of portfolio securities were $2.3 million during the three month and $2.6 million during the six month periods ended June 30, 2018. Gross gains were $2 and $6 thousand along with gross losses of $1 and $3 thousand during the same three and six month periods ended June 30, 2018. $26 and $42 thousand of unrealized gains during the three and six month periods ended June 30, 2018 were recognized in the income statement for equity securities as a result of adoption of ASU 2016-01.

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.

	June 30, 2019
(In Thousands of Dollars)	Amortized Cost		Fair Value
Maturity
Within one year	$	7,313	$	7,339
One to five years		34,464		35,152
Five to ten years		157,554		164,479
Beyond ten years		30,687		31,662
Mortgage-backed, collateralized mortgage obligations and Small Business Administration securities		184,263		185,620
Total	$	414,281	$	424,252

The following table summarizes the available for sale investment securities with unrealized losses at June 30, 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
June 30, 2019
Available-for-sale
U.S. Treasury and U.S. government sponsored entities	$	0	$	0	$	2,366	$	(9	)	$	2,366	$	(9	)
State and political subdivisions		0		0		0		0			0		0
Corporate bonds		0		0		479		(1	)		479		(1	)
Mortgage-backed securities - residential		9		0		47,126		(504	)		47,135		(504	)
Collateralized mortgage obligations - residential		0		0		13,042		(319	)		13,042		(319	)
Small Business Administration		5		0		8,909		(55	)		8,914		(55	)
Total	$	14	$	0	$	71,922	$	(888	)	$	71,936	$	(888	)

	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
Available-for-sale
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	$	37,766	$	(322	)	$	222,033	$	(6,995	)	$	259,799	$	(7,317	)

Management evaluates securities for other-than-temporary impairment (“OTTI”) at least on a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. Investment securities are generally evaluated for OTTI under FASB ASU 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. Consideration is given to the length of time and the extent to which the fair value has been less than cost, the financial condition and near-term prospects of the issuer, whether the market decline was affected by macroeconomic conditions and whether the Company has the intent to sell the debt security or more likely than not will be required to sell the debt security before its anticipated recovery. In analyzing an issuer’s financial condition, the Company may consider whether the securities are issued by the federal government or its agencies, or U.S. government sponsored enterprises, whether downgrades by bond rating agencies have occurred, and the results of reviews of the issuer’s financial condition. The assessment of whether an other-than-temporary decline exists involves a high degree of subjectivity and judgment, and is based on the information available to management at a point in time.

As of June 30, 2018 and 2019, debt securities had unrealized losses of $10.5 million and $888 thousand, respectively. These unrealized losses are generally due to changes in interest rates or general market conditions. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analysts’ reports. Management concluded that the unrealized losses on debt securities were temporary. Due to potential changes in conditions, it is at least reasonably possible that changes in fair values and management’s assessments will occur in the near term and that such changes could materially affect the amounts reported in the Company’s financial statements.

As of June 30, 2019, the Company’s security portfolio consisted of 588 securities, 83 of which were in an unrealized loss position. The majority of the unrealized losses on the Company’s securities are related to its holdings of mortgage-backed securities, collateralized mortgage obligations, state and political subdivision securities, and Small Business Administration securities as discussed below.

Unrealized losses on debt securities issued by state and political subdivisions have not been recognized into income. These securities have maintained their investment grade ratings and management does not have the intent and does not expect to be required to sell these securities before their anticipated recovery. The fair value is expected to recover as the securities approach their maturity date.

All of the Company’s holdings of collateralized mortgage obligations and residential mortgage-backed securities were issued by U.S. government-sponsored entities. Unrealized losses on these securities have not been recognized into income. Because the decline in fair value is attributable to changes in interest rates and illiquidity, and not credit quality, the issues are guaranteed by the issuing entity which the U.S. government has affirmed its commitment to support, and because the Company does not have the intent to sell these residential mortgage-backed securities and it is likely that it will not be required to sell the securities before their anticipated recovery, the Company does not consider these securities to be OTTI.

Management does not believe any unrealized losses on Small Business Administration securities represent an OTTI. The securities are issued and backed by the full faith and credit of the U.S. government and the Company does not have the intent and does not anticipate that it will be required to sell these securities before their anticipated recovery. The fair value of these securities is expected to recover as they approach their maturity.