Investment securities available for sale are carried at fair value in the consolidated balance sheets. The following tables present amortized cost and fair values of investment securities available for sale as of the dates stated.

	June 30, 2021
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for sale
State and municipal	$	30,441	$	273	$	(108	)	$	30,606
U.S. Treasury and agencies		23,570		1		(543	)		23,028
Mortgage backed securities		175,940		760		(2,265	)		174,435
Corporate bonds		32,730		626		(116	)		33,240
Total investment securities	$	262,681	$	1,660	$	(3,032	)	$	261,309

	December 31, 2020
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for sale
State and municipal	$	14,069	$	258	$	(68	)	$	14,259
U.S. Treasury and agencies		2,500		—		(91	)		2,409
Mortgage backed securities		72,337		696		(398	)		72,635
Corporate bonds		19,755		469		(52	)		20,172
Total investment securities	$	108,661	$	1,423	$	(609	)	$	109,475

As of June 30, 2021 and December 31, 2020, securities with a fair value of $10.8 million and $12.5 million, respectively, were pledged with the Treasury Board of the Commonwealth of Virginia to secure public deposits.

As of June 30, 2021 and December 31, 2020, securities with a fair value of $31.5 million and $29.4 million, respectively, were pledged to secure the Bank’s borrowing facility with the FHLB.

The following table presents the amortized cost and fair value of securities available for sale by contractual maturity as of the date stated. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	June 30, 2021
(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	6,351	$	6,352
Due after one year through five years		24,786		24,850
Due after five years through ten years		57,224		57,585
Due after ten years		174,320		172,523
Total	$	262,681	$	261,309

The following tables present a summary of unrealized losses and the length of time securities have been in a continuous loss position, by security type and number of securities, as of the dates stated.

			June 30, 2021
			Less than 12 Months					12 Months or Greater					Total
(Dollars in thousands)	Number of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
State and municipal		30	$	14,681	$	(108	)	$	—	$	—		$	14,681	$	(108	)
U.S. Treasury and agencies		13		20,368		(543	)		—		—			20,368		(543	)
Mortgage backed securities		64		109,559		(2,254	)		1,219		(11	)		110,778		(2,265	)
Corporate bonds		8		3,950		(116	)		—		—			3,950		(116	)
Total		115	$	148,558	$	(3,021	)	$	1,219	$	(11	)	$	149,777	$	(3,032	)

			December 31, 2020
			Less than 12 Months					12 Months or Greater					Total
(Dollars in thousands)	Number of Securities		Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
State and municipal		6	$	3,111	$	(68	)	$	—	$	—		$	3,111	$	(68	)
U.S. Treasury and agencies		1		2,410		(91	)		—		—			2,410		(91	)
Mortgage backed securities		22		20,545		(65	)		8,592		(333	)		29,137		(398	)
Corporate bonds		7		3,242		(7	)		1,955		(45	)		5,197		(52	)
Total		36	$	29,308	$	(231	)	$	10,547	$	(378	)	$	39,855	$	(609	)

The Company reviews for other-than-temporary impairment of its investment securities portfolio at least quarterly. As of June 30, 2021 and December 31, 2020, only investment grade securities were in an unrealized loss position or the amount of unrealized loss for the security was not significant. Investment securities with unrealized losses are generally a result of pricing changes due to recent and negative conditions in the current interest rate environment and not as a result of permanent credit impairment. Contractual cash flows for the mortgage-backed securities are guaranteed and/or funded by the U.S. government. Municipal securities show no indication that the contractual cash flows will not be received when due. The Company does not intend to sell nor does it believe that it will be required to sell any of its temporarily impaired securities prior to the recovery of the amortized cost.

Restricted equity investments consisted of stock in the FHLB (carrying value of $6.0 million and $5.8 million as of June 30, 2021 and December 31, 2020, respectively), FRB stock (carrying value of $4.9 million and $2.2 million as of June 30, 2021 and December 31, 2020, respectively), and stock in the Company’s correspondent bank (carrying value of $468 thousand and $248 thousand as of June 30, 2021 and December 31, 2020, respectively). Restricted equity investments are carried at cost. The Company also has various other equity investments totaling $1.8 million and $3.0 million as of June 30, 2021 and December 31, 2020, respectively, which are carried at fair value with any gain or loss reported in the consolidated income statements each reporting period.