The amortized cost and fair value of securities available for sale, are summarized as follows:

	December 31, 2020
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Fair Value
Obligations of U.S. Government corporations and agencies	$	57,486	$	1,759	$	(35	)	$	59,210
Obligations of states and political subdivisions		22,016		1,623		(1	)		23,638
	$	79,502	$	3,382	$	(36	)	$	82,848

	December 31, 2019
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Fair Value
Obligations of U.S. Government corporations and agencies	$	63,090	$	937	$	(86	)	$	63,941
Obligations of states and political subdivisions		15,054		802		(14	)		15,842
	$	78,144	$	1,739	$	(100	)	$	79,783

The amortized cost and fair value of securities available for sale, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations without penalties.

	December 31, 2020
(In thousands)	Amortized Cost		Fair Value
Due in one year or less	$	2,054	$	2,072
Due after one year through five years		7,934		8,419
Due after five years through ten years		8,972		9,467
Due after ten years		60,542		62,890
	$	79,502	$	82,848

Proceeds from maturities, calls and principal repayments of securities available for sale during 2020, 2019 and 2018 were $16.2 million, $8.2 million and $11.7 million, respectively. Proceeds from the sales of securities available for sale during 2020 and 2019 were $18.8 million and $13.9 million, respectively. There were no sales of securities available for sale during 2018. Net gains on sales and/or calls of securities available for sale were $992,000, $79,000, and $838,000 during 2020, 2019 and 2018, respectively. Securities available for sale totaling $35.8 million, $27.6 million and $12.4 million were purchased in 2020, 2019 and 2018, respectively.

The following table presents securities with gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2020 and 2019, respectively.

(In thousands)	Less than 12 Months					12 Months or More				Total
December 31, 2020	Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)		Fair Value		Unrealized (Losses)
Obligations of U.S. Government corporations and agencies	$	7,958	$	(35	)	$	-	$	-	$	7,958	$	(35	)
Obligations of states and political subdivisions		508		(1	)		-		-		508		(1	)
Total temporarily impaired securities	$	8,466	$	(36	)	$	-	$	-	$	8,466	$	(36	)

(In thousands)	Less than 12 Months					12 Months or More					Total
December 31, 2019	Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)			Fair Value		Unrealized (Losses)
Obligations of U.S. Government corporations and agencies	$	11,460	$	(42	)	$	5,651	$	(44	)	$	17,111	$	(86	)
Obligations of states and political subdivisions		2,049		(14	)		-		-			2,049		(14	)
Total temporarily impaired securities	$	13,509	$	(56	)	$	5,651	$	(44	)	$	19,160	$	(100	)

At December 31, 2020, there were 5 securities totaling $8.5 million of aggregate fair value considered temporarily impaired. The primary cause of the temporary impairments in the Company’s investments in debt securities was fluctuations in interest rates. The Company concluded that no other-than-temporary impairment existed in its securities portfolio at December 31, 2020, and no other-than-temporary impairment loss has been recognized in net income, based primarily on the fact that changes in fair value were caused primarily by fluctuations in interest rates, there were no securities with unrealized losses that were significant relative to their carrying amounts, no securities have been in an unrealized loss position continuously for more than 12 months, securities with unrealized losses had generally high credit quality, the Company intends to hold these investments in debt securities to maturity and it is more-likely-than-not that the Company will not be required to sell these investments before a recovery of its investment, and issuers have continued to make timely payments of principal and interest. Additionally, the Company’s mortgage-backed securities are entirely issued by either U.S. government agencies or U.S. government-sponsored enterprises. Collectively, these entities provide a guarantee, which is either explicitly or implicitly supported by the full faith and credit of the U.S. government, that investors in such mortgage-backed securities will receive timely principal and interest payments.

The carrying value of securities pledged to secure deposits and for other purposes amounted to $13.1 million and $16.6 million at December 31, 2020 and 2019, respectively.