Investment Securities (Tables)

12 Months Ended

Dec. 31, 2020

Securities Financing Transactions Disclosures [Abstract]

Unrealized Gain (Loss) on Investments

The majority of the investment portfolio is comprised of securities issued by U.S. government agencies and state and political subdivision obligations.  The amortized cost, fair value, and unrealized gains and losses on investment securities at December 31, 2020 and December 31, 2019 are as follows:

(Dollars in thousands)
	Amortized		Unrealized		Unrealized		Fair
December 31, 2020	Cost		Gains		Losses		Value
Available for sale securities:
Mortgage-backed U.S. government agencies	$	2	$	—	$	—	$	2
Corporate debt securities		5,750		—		4		5,746
Total available for sale securities		5,752		—		4		5,748
Held to maturity securities:
U.S. Treasury and U.S. government agencies		11,511		66		—		11,577
Mortgage-backed U.S. government agencies		40,810		948		15		41,743
State and political subdivision obligations		65,449		3,295		6		68,738
Corporate debt securities		10,522		215		1		10,736
Total held to maturity securities		128,292		4,524		22		132,794
Total	$	134,044	$	4,524	$	26	$	138,542

(Dollars in thousands)
	Amortized		Unrealized		Unrealized		Fair
December 31, 2019	Cost		Gains		Losses		Value
Available for sale securities:
U.S. government agencies	$	22,894	$	6	$	70	$	22,830
Mortgage-backed U.S. government agencies		12,996		7		113		12,890
State and political subdivision obligations		30		—		—		30
Corporate debt securities		1,250		9		—		1,259
Total available-for-sale debt securities		37,170		22		183		37,009
Held-to-maturity debt securities:
U.S. Treasury and U.S. government agencies		50,210		46		220		50,036
Mortgage-backed U.S. government agencies		42,098		95		102		42,091
State and political subdivision obligations		44,169		1,193		13		45,349
Total held-to-maturity debt securities		136,477		1,334		335		137,476
Total	$	173,647	$	1,356	$	518	$	174,485

Schedule of Fair Value and Unrealized Loss on Investments in a Continuous Unrealized Loss Position

The following table presents gross unrealized losses and fair value of investments 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.

(Dollars in thousands)	Less Than 12 Months					12 Months or More					Total
December 31, 2020	Number of Securities	Fair Value		Unrealized Losses		Number of Securities	Fair Value		Unrealized Losses		Number of Securities	Fair Value		Unrealized Losses
Available for sale securities:
Corporate debt securities	2	$	3,497	$	4	0	$	—	$	—	2	$	3,497	$	4
Total temporarily impaired    available for sale securities	2		3,497		4	0		—		—	2		3,497		4
Held to maturity securities:
Mortgage-backed    U.S. government agencies	8	$	5,336	$	15	0	$	—	$	—	8	$	5,336	$	15
State and political    subdivision obligations	2		801		6	0		—		—	2		801		6
Corporate debt securities	1		449		1	0		—		—	1		449		1
Total temporarily impaired    held to maturity securities	11		6,586		22	0		—		—	11		6,586		22
Total	13	$	10,083	$	26	0	$	—	$	—	13	$	10,083	$	26
(Dollars in thousands)	Less Than 12 Months					12 Months or More					Total
December 31, 2019	Number of Securities	Fair Value		Unrealized Losses		Number of Securities	Fair Value		Unrealized Losses		Number of Securities	Fair Value		Unrealized Losses
Available for sale securities:
U.S. government agencies	4	$	4,652	$	24	7	$	11,982	$	46	11	$	16,634	$	70
Mortgage-backed    U.S. government agencies	1		1,643		4	14		10,603		109	15		12,246		113
Total temporarily impaired    available for sale securities	5		6,295		28	21		22,585		155	26		28,880		183
Held to maturity securities:
U.S. Treasury and    U.S. government agencies	18	$	29,024	$	219	1	$	2,999	$	1	19	$	32,023	$	220
Mortgage-backed    U.S. government agencies	6		8,445		35	13		11,050		67	19		19,495		102
State and political    subdivision obligations	3		1,383		13	0		—		—	3		1,383		13
Total temporarily impaired    held to maturity securities	27		38,852		267	14		14,049		68	41		52,901		335
Total	32	$	45,147	$	295	35	$	36,634	$	223	67	$	81,781	$	518

Schedule of Gross Realized Gains (Losses) on Sales of Available-For-Sale Securities

Gross realized gains and losses on sales of available-for-sale securities for the years ended December 31, 2020, 2019, and 2018 are shown in the table below.

(Dollars in thousands)	For the year ended December 31,
	2020			2019				2018
Realized gains	$	479		$	1,951		$	150
Realized losses		(12	)		(73	)		(13	)
Net gains	$	467		$	1,878		$	137

Investments Classified by Contractual Maturity Date

The table below illustrates the maturity distribution of investment securities at amortized cost and fair value at December 31, 2020.

(Dollars in thousands)	Available for Sale				Held to Maturity
	Amortized		Fair		Amortized		Fair
December 31, 2020	Cost		Value		Cost		Value
Due in 1 year or less	$	—	$	—	$	—	$	—
Due after 1 year but within 5 years		4,750		4,747		33,983		35,196
Due after 5 years but within 10 years		1,000		999		51,364		53,659
Due after 10 years		—		—	$	2,135	$	2,196
		5,750		5,746		87,482		91,051
Mortgage-backed securities		2		2		40,810		41,743
	$	5,752	$	5,748	$	128,292	$	132,794