Securities (Tables)

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Summary of Securities Available-for-Sale and Restricted Stock

Securities consist of the following at March 31, 2018 and December 31, 2017:

(Dollars in thousands)	Amortized cost		Gross unrealized gains		Gross unrealized losses		Fair value
March 31, 2018
Available-for-sale
U.S. Treasury security	$	999	$	—	$	1	$	998
U.S. Government agencies		8,350		—		222		8,128
Mortgage-backed securities of government agencies		48,080		34		1,103		47,011
Asset-backed securities of government agencies		1,139		—		4		1,135
State and political subdivisions		26,969		54		359		26,664
Corporate bonds		10,515		3		256		10,262
Total available-for-sale		96,052		91		1,945		94,198
Held-to-maturity
U.S. Government agencies		9,478		8		385		9,101
Mortgage-backed securities of government agencies		13,010		21		261		12,770
Total held-to-maturity		22,488		29		646		21,871
Equity securities		53		41		—		94
Restricted stock		4,614		—		—		4,614
Total securities	$	123,207	$	161	$	2,591	$	120,777
December 31, 2017
Available-for-sale
U.S. Treasury security	$	999	$	—	$	1	$	998
U.S. Government agencies		8,350		—		121		8,229
Mortgage-backed securities of government agencies		50,136		146		581		49,701
Asset-backed securities of government agencies		1,168		1		—		1,169
State and political subdivisions		27,020		224		103		27,141
Corporate bonds		10,532		35		142		10,425
Total available-for-sale		98,205		406		948		97,663
Held-to-maturity
U.S. Government agencies		9,477		16		228		9,265
Mortgage-backed securities of government agencies		11,581		95		145		11,531
State and political subdivisions		4,700		—		5		4,695
Total held-to-maturity		25,758		111		378		25,491
Equity securities		53		36		—		89
Restricted stock		4,614		—		—		4,614
Total securities	$	128,630	$	553	$	1,326	$	127,857

Summary of Amortized Cost and Fair Value of Debt Securities

The amortized cost and fair value of debt securities at March 31, 2018, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(Dollars in thousands)	Amortized cost		Fair value
Available-for-sale
Due in one year or less	$	5,067	$	5,060
Due after one through five years		17,212		17,040
Due after five through ten years		29,162		28,586
Due after ten years		44,611		43,512
Total debt securities available-for-sale	$	96,052	$	94,198
Held-to-maturity
Due in one year or less	$	—	$	—
Due after one through five years		480		488
Due after five through ten years		3,000		2,831
Due after ten years		19,008		18,552
Total debt securities held-to-maturity	$	22,488	$	21,871

Summary of Gross Unrealized Losses and Fair Value of Available for Sale Securities

The following table presents gross unrealized losses and fair value of securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at March 31, 2018 and December 31, 2017:

	Securities in a continuous unrealized loss position
	Less than 12 months				12 months or more				Total
(Dollars in thousands)	Gross unrealized losses		Fair value		Gross unrealized losses		Fair value		Gross unrealized losses		Fair value
March 31, 2018
Available-for-sale
U.S. Treasury security	$	—	$	—	$	1	$	998	$	1	$	998
U.S. Government agencies		104		3,746		118		4,382		222		8,128
Mortgage-backed securities of government agencies		421		27,764		682		16,723		1,103		44,487
Asset-backed securities of government agencies		4		1,135		—		—		4		1,135
State and political subdivisions		182		14,099		177		3,645		359		17,744
Corporate bonds		54		6,986		202		2,298		256		9,284
Held-to-maturity
U.S. Government agencies		38		1,962		347		6,651		385		8,613
Mortgage-backed securities of government agencies		82		6,940		179		2,942		261		9,882
Total temporarily impaired securities	$	885	$	62,632	$	1,706	$	37,639	$	2,591	$	100,271
December 31, 2017
Available-for-sale
U.S. Treasury security	$	1	$	998	$	—	$	—	$	1	$	998
U.S. Government agencies		46		3,804		75		4,425		121		8,229
Mortgage-backed securities of government agencies		145		16,872		436		17,259		581		34,131
State and political subdivisions		26		4,400		77		3,752		103		8,152
Corporate bonds		2		2,912		140		2,360		142		5,272
Held-to-maturity
U.S. Government agencies		15		1,985		213		6,785		228		8,770
Mortgage-backed securities of government agencies		18		1,818		127		3,116		145		4,934
State and political subdivisions		5		4,695		—		—		5		4,695
Total temporarily impaired securities	$	258	$	37,484	$	1,068	$	37,697	$	1,326	$	75,181