Investment Securities (Tables)

12 Months Ended

Dec. 31, 2018

Securities Financing Transactions Disclosures [Abstract]

At December 31, 2018 and 2017, amortized cost, fair value, and unrealized gains and losses on investment securities are as follows:

(Dollars in thousands)
	Amortized		Unrealized		Unrealized		Fair
December 31, 2018	Cost		Gains		Losses		Value
Available for sale securities:
U.S. Treasury and U.S. government agencies	$	43,270	$	10	$	1,708	$	41,572
Mortgage-backed U.S. government agencies		39,865		—		1,016		38,849
State and political subdivision obligations		30,642		11		1,397		29,256
Corporate debt securities		2,250		—		4		2,246
Total available for sale securities		116,027		21		4,125		111,923
Held to maturity securities:
U.S. Treasury and U.S. government agencies	$	16,985	$	14	$	143	$	16,856
Mortgage-backed U.S. government agencies		65,812		46		1,310		64,548
State and political subdivision obligations		84,034		457		842		83,649
Corporate debt securities		1,539		—		10		1,529
Total held to maturity securities		168,370		517		2,305		166,582
Total	$	284,397	$	538	$	6,430	$	278,505

(Dollars in thousands)
	Amortized		Unrealized		Unrealized		Fair
December 31, 2017	Cost		Gains		Losses		Value
Available for sale securities:
U.S. Treasury and U.S. government agencies	$	40,125	$	—	$	1,395	$	38,730
Mortgage-backed U.S. government agencies		26,398		2		569		25,831
State and political subdivision obligations		27,775		7		739		27,043
Corporate debt securities		1,350		5		—		1,355
Total available-for-sale debt securities	$	95,648	$	14	$	2,703	$	92,959
Available-for-sale equity securities:
Equity securities		550		—		44		506
Total available-for-sale equity securities	$	550	$	—	$	44	$	506
Held-to-maturity debt securities:
U.S. Treasury and U.S. government agencies	$	10,984	$	—	$	90	$	10,894
Mortgage-backed U.S. government agencies		53,472		—		523		52,949
State and political subdivision obligations		36,900		41		301		36,640
Total held-to-maturity debt securities		101,356		41		914		100,483
Total	$	197,554	$	55	$	3,661	$	193,948

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, 2018 and 2017.

(Dollars in thousands)	Less Than 12 Months					12 Months or More					Total
December 31, 2018	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. Treasury and U.S. government agencies	0	$	—	$	—	21	$	38,386	$	1,708	21	$	38,386	$	1,708
Mortgage-backed U.S. government agencies	11		16,740		163	19		22,093		853	30		38,833		1,016
State and political subdivision obligations	3		1,751		23	51		24,520		1,374	54		26,271		1,397
Corporate debt securities	2		1,996		4	0		—		—	2		1,996		4
Total temporarily impaired available for sale securities	16		20,487		190	91		84,999		3,935	107		105,486		4,125

Held to maturity securities:
U.S. Treasury and U.S. government agencies	1	$	1,985	$	10	3	$	8,852	$	133	4	$	10,837	$	143
Mortgage-backed U.S. government agencies	10		16,165		79	35		42,431		1,231	45		58,596		1,310
State and political subdivision obligations	26		11,321		111	77		29,460		731	103		40,781		842
Corporate debt securities	1		1,529		10	0		—		—	1		1,529		10
Total temporarily impaired held to maturity securities	38		31,000		210	115		80,743		2,095	153		111,743		2,305
Total	54	$	51,487	$	400	206	$	165,742	$	6,030	260	$	217,229	$	6,430


(Dollars in thousands)	Less Than 12 Months					12 Months or More					Total
December 31, 2017	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. Treasury and U.S. government agencies	3	$	5,008	$	184	18	$	33,722	$	1,211	21	$	38,730	$	1,395
Mortgage-backed U.S. government agencies	4		5,267		75	15		20,497		494	19		25,764		569
State and political subdivision obligations	11		6,144		102	40		19,091		637	51		25,235		739
Corporate debt securities	0		—		—	0		—		—	0		—		—
Equity securities	0		—		—	1		506		44	1		506		44
Total temporarily impaired available for sale securities	18		16,419		361	74		73,816		2,386	92		90,235		2,747

Held to maturity securities:
U.S. Treasury and U.S. government agencies	0	$	—	$	—	4	$	10,894	$	90	4	$	10,894	$	90
Mortgage-backed U.S. government agencies	0		—		—	35		52,949		523	35		52,949		523
State and political subdivision obligations	0		—		—	77		29,976		301	77		29,976		301
Total temporarily impaired held to maturity securities	0		—		—	116		93,819		914	116		93,819		914
Total	18	$	16,419	$	361	190	$	167,635	$	3,300	208	$	184,054	$	3,661

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, 2018, 2017, and 2016 are shown in the table below.

(Dollars in thousands)	For the year ended December 31,
	2018			2017				2016
Realized gains	$	150		$	246		$	1,927
Realized losses		(13	)		(204	)		(881	)
Net gains	$	137		$	42		$	1,046

Investments Classified by Contractual Maturity Date

The table below is the maturity distribution of investment securities at amortized cost and fair value at December 31, 2018.

(Dollars in thousands)	Available for Sale				Held to Maturity
	Amortized		Fair		Amortized		Fair
December 31, 2018	Cost		Value		Cost		Value
Due in 1 year or less	$	—	$	—	$	1,086	$	1,087
Due after 1 year but within 5 years		25,285		24,732		18,745		18,597
Due after 5 years but within 10 years		43,070		41,027		82,727		82,350
Due after 10 years		7,807		7,315		—		—
		76,162		73,074		102,558		102,034
Mortgage-backed securities		39,865		38,849		65,812		64,548
	$	116,027	$	111,923	$	168,370	$	166,582