Investments (Tables)

12 Months Ended

Dec. 31, 2017

Investments [Abstract]

Unrealized Gain (Loss) On Investments

(Dollars in thousands)			Gross		Gross
	Amortized		unrealized		unrealized		Fair
December 31, 2017	cost		gains		losses		value
Equity securities	$	164	$	201	$	—	$	365
U.S. Government and Agency securities		11,451		64		(43)		11,472
Municipal securities		57,374		650		(252)		57,772
Trust preferred securities		6,000		—		(183)		5,817
Agency mortgage-backed securities		51,307		197		(567)		50,937
Private-label mortgage-backed securities		858		88		—		946
Asset-backed securities		28		—		(1)		27
Total	$	127,182	$	1,200	$	(1,046)	$	127,336

(Dollars in thousands)			Gross		Gross
	Amortized		unrealized		unrealized		Fair
December 31, 2016	cost		gains		losses		value
Equity securities	$	164	$	126	$	—	$	290
U.S. Government and Agency securities		12,598		148		(26)		12,720
Municipal securities		62,763		793		(571)		62,985
Trust preferred securities		5,979		—		(518)		5,461
Agency mortgage-backed securities		61,305		431		(452)		61,284
Private-label mortgage-backed securities		1,053		56		(5)		1,104
Asset-backed securities		33		—		(2)		31
Total	$	143,895	$	1,554	$	(1,574)	$	143,875

Amortized Cost And Fair Value Of Debt Securities, By Contractual Maturity

(Dollars in thousands)	Amortized cost		Fair value
Due in one year or less	$	19	$	19
Due after one year through five years		13,784		13,920
Due after five years through ten years		33,748		33,770
Due after ten years		27,302		27,379
		74,853		75,088
Mortgage-backed securities		52,165		51,883
Total	$	127,018	$	126,971

Composition Of Net Realized Securities Gains

(Dollars in thousands)	2017		2016		2015
Gross gains realized (including gain on conversion)	$	3	$	22	$	736
Gross losses realized		—		—		—
Net gains realized	$	3	$	22	$	736

Schedule Of Unrealized Loss On Investments

	December 31, 2017
	Less than 12 months					12 months or more					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Dollars in thousands)	Value		Losses		Count	Value		Losses		Count	Value		Losses		Count
U.S. Government and Agency securities	$	2,315	$	(11)	5	$	3,528	$	(32)	10	$	5,843	$	(43)	15
Municipal securities		13,767		(89)	22		7,507		(163)	14		21,274		(252)	36
Trust preferred securities		1,216		(12)	2		4,601		(171)	5		5,817		(183)	7
Agency mortgage-backed securities		16,287		(129)	29		20,563		(438)	39		36,850		(567)	68
Private-label mortgage-backed securities		—		—	—		—		—	—		—		—	—
Asset-backed securities		—		—	—		4		(1)	1		4		(1)	1
Total temporarily impaired securities	$	33,585	$	(241)	58	$	36,203	$	(805)	69	$	69,788	$	(1,046)	127

	December 31, 2016
	Less than 12 months					12 months or more					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
(Dollars in thousands)	Value		Losses		Count	Value		Losses		Count	Value		Losses		Count
U.S. Government and Agency securities	$	789	$	(9)	1	$	3,413	$	(17)	10	$	4,202	$	(26)	11
Municipal securities		23,407		(417)	43		1,598		(154)	2		25,005		(571)	45
Trust preferred securities		—		—	—		5,461		(518)	7		5,461		(518)	7
Agency mortgage-backed securities		26,995		(359)	39		4,656		(93)	11		31,651		(452)	50
Private-label mortgage-backed securities		281		(5)	1		—		—	—		281		(5)	1
Asset-backed securities		—		—	—		4		(2)	1		4		(2)	1
Total temporarily impaired securities	$	51,472	$	(790)	84	$	15,132	$	(784)	31	$	66,604	$	(1,574)	115

Other Than Temporary Impairment, Credit Losses Recognized In Earnings

(Dollars in thousands)	Twelve Months Ended
	2017		2016
Balance of cumulative credit-related OTTI at January 1	$	595	$	555
Additions for credit-related OTTI not previously recognized		—		40
Additional increases for credit-related OTTI previously recognized when there is
no intent to sell and no requirement to sell before recovery of amortized cost basis		—		—
Decreases for previously recognized credit-related OTTI because there was an intent to sell		—		—
Reduction for increases in cash flows expected to be collected		—		—
Balance of credit-related OTTI at December 31	$	595	$	595