Investment Securities (Tables)

12 Months Ended

Dec. 31, 2020

Investment Securities

Schedule of amortized cost of investment securities to estimated fair values

	December 31, 2020
	Amortized		Unrealized		Unrealized		Fair
(dollars in thousands)	Cost		Gains		Losses		Value
U.S. Treasury and agencies	$	5,926	$	—	$	(19)	$	5,907
Obligations of state and political agencies		148,491		5,282		—		153,773
Mortgage backed securities
Residential agency		254,002		8,002		—		262,004
Commercial		139,059		1,070		(436)		139,693
Asset backed securities		109		6		—		115
Corporate bonds		30,553		387		(90)		30,850
Total available-for-sale investment securities	$	578,140	$	14,747	$	(545)	$	592,342

	December 31, 2019
	Amortized		Unrealized		Unrealized		Fair
(dollars in thousands)	Cost		Gains		Losses		Value
U.S. Treasury and agencies	$	21,246	$	9	$	(15)	$	21,240
Obligations of state and political agencies		68,162		647		(161)		68,648
Mortgage backed securities
Residential agency		180,411		2,258		(131)		182,538
Commercial		30,752		101		(168)		30,685
Asset backed securities		139		5		—		144
Corporate bonds		7,054		41		—		7,095
Total available-for-sale investment securities	$	307,764	$	3,061	$	(475)	$	310,350

Schedule of contractual maturity of amortized cost and estimated fair value

	Amortized		Fair
(dollars in thousands)	Cost		Value
Due within one year or less	$	3,469	$	3,486
Due after one year through five years		31,607		32,256
Due after five years through ten years		155,141		160,462
Due after 10 years		387,923		396,138
Total available-for-sale investment securities	$	578,140	$	592,342

Schedule of proceeds from the sale of available for sale securities

	Year ended
	December 31,
(dollars in thousands)	2020		2019		2018
Proceeds	$	75,647	$	32,565	$	6,488
Realized gains		2,737		357		144
Realized losses		—		(22)		(15)

Schedule of investment securities with gross unrealized losses

	December 31, 2020
	Less than 12 Months				Over 12 Months				Total
	Unrealized		Fair		Unrealized		Fair		Unrealized		Fair
(dollars in thousands)	Losses		Value		Losses		Value		Losses		Value
U.S. Treasury and agencies	$	(10)	$	4,509	$	(9)	$	1,309	$	(19)	$	5,818
Obligations of state and political agencies		—		—		—		—		—		—
Mortgage backed securities
Residential agency		—		—		—		—		—		—
Commercial		(432)		68,494		(4)		2,356		(436)		70,850
Asset backed securities		—		—		—		2		—		2
Corporate bonds		(90)		16,454		—		—		(90)		16,454
Total available-for-sale investment securities	$	(532)	$	89,457	$	(13)	$	3,667	$	(545)	$	93,124

	December 31, 2019
	Less than 12 Months				Over 12 Months				Total
	Unrealized		Fair		Unrealized		Fair		Unrealized		Fair
(dollars in thousands)	Losses		Value		Losses		Value		Losses		Value
U.S. Treasury and agencies	$	(5)	$	1,740	$	(10)	$	9,990	$	(15)	$	11,730
Obligations of state and political agencies		(140)		11,959		(21)		5,798		(161)		17,757
Mortgage backed securities
Residential agency		(52)		17,131		(79)		14,036		(131)		31,167
Commercial		(116)		15,235		(52)		6,195		(168)		21,430
Asset backed securities		—		2		—		—		—		2
Corporate bonds		—		—		—		—		—		—
Total available-for-sale investment securities	$	(313)	$	46,067	$	(162)	$	36,019	$	(475)	$	82,086

Schedule of federal home loan bank

	December 31,		December 31,
(dollars in thousands)	2020		2019
Federal Reserve	$	2,675	$	2,675
FHLB		3,090		3,080