Amortized costs and fair values of securities available for sale at September 30, 2020 and December 31, 2019 were as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized (Losses)			Fair Value
	September 30, 2020
	(in thousands)
Obligations of U.S. government corporations and agencies	$	16,579	$	1,055	$	—		$	17,634
Mortgage-backed securities		102,786		2,135		(74	)		104,847
Obligations of states and political subdivisions		27,999		1,440		—			29,439
Corporate securities		500		—		—			500
	$	147,864	$	4,630	$	(74	)	$	152,420

	December 31, 2019
	(in thousands)
Obligations of U.S. government corporations and agencies	$	21,917	$	363	$	(94	)	$	22,186
Mortgage-backed securities		107,410		966		(215	)		108,161
Obligations of states and political subdivisions		33,854		858		(56	)		34,656
	$	163,181	$	2,187	$	(365	)	$	165,003

During the nine months ended September 30, 2020, the Company sold $28.3 million available for sale securities recognizing $687 thousand in gross gains and no gross losses. During the nine months ended September 30, 2019, the Company sold $12.3 million of available for sale securities for gross gains of $37 thousand and $44 thousand in gross losses.

The fair value and gross unrealized losses for securities available for sale, totaled by the length of time that individual securities have been in a continuous gross unrealized loss position, at September 30, 2020 and December 31, 2019 were as follows:

	Less than 12 months				12 months or more				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	September 30, 2020
	(in thousands)
Obligations of U.S. government corporations and agencies	$	—	$	—	$	—	$	—	$	—	$	—
Mortgage-backed securities		7,166		74		—		—		7,166		74
Obligations of states and political subdivisions		—		—		—		—		—		—
Corporate securities		—		—		—		—		—		—
	$	7,166	$	74	$	—	$	—	$	7,166	$	74

	Less than 12 months				12 months or more				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	December 31, 2019
	(in thousands)
Obligations of U.S. government corporations and agencies	$	5,466	$	91	$	1,997	$	3	$	7,463	$	94
Mortgage-backed securities		19,509		176		5,271		39		24,780		215
Obligations of states and political subdivisions		3,127		49		923		7		4,050		56
	$	28,102	$	316	$	8,191	$	49	$	36,293	$	365

Gross unrealized losses on available for sale securities included two (2) and twenty-eight (28) debt securities at September 30, 2020 and December 31, 2019, respectively. The Company evaluates securities for other-than-temporary impairment on at least a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Consideration is given to the length of time and the amount of an unrealized loss, the financial condition of the issuer, and the intent and ability of the Company to retain its investment in the issuer long enough to allow for an anticipated recovery in fair value. The fair value of a security reflects its liquidity as compared to similar instruments, current market rates on similar instruments, and the creditworthiness of the issuer. Absent any change in the liquidity of a security or the creditworthiness of the issuer, prices will decline as market rates rise and vice-versa. The primary cause of the unrealized losses at September 30, 2020 and December 31, 2019 was changes in market interest rates and other market conditions and not credit concerns of the issuers. Since the losses can be primarily attributed to changes in market interest rates and conditions and not expected cash flows or an issuer’s financial condition and management does not intend to sell and it is likely that management will not be required to sell the securities prior to their anticipated recovery, the unrealized losses were deemed to be temporary. The Company’s mortgage-backed securities are issued by U.S. government agencies, which guarantee payments to investors regardless of the status of the underlying mortgages. The Company monitors the financial condition of these issuers continuously and will record other-than-temporary impairment if the recovery of value is unlikely.

The Company’s securities are exposed to various risks, such as interest rate, market, currency and credit risks. Due to the level of risk associated with certain securities and the level of uncertainty related to changes in the value of securities, it is at least reasonably possible that changes in risks in the near term would materially affect securities reported in the financial statements.

Securities having a carrying value of $3.1 million at September 30, 2020 were pledged as security for public deposits.

The composition of restricted investments at September 30, 2020 and December 31, 2019 was as follows:

	September 30, 2020		December 31, 2019
	(in thousands)
Federal Reserve Bank Stock	$	344	$	344
Federal Home Loan Bank Stock		784		713
Community Bankers’ Bank Stock		140		140
	$	1,268	$	1,197