Investments (Tables)

3 Months Ended

Mar. 31, 2018

Investments [Abstract]

Unrealized Gain (Loss) On Investments

(Dollars in thousands)			Gross		Gross
	Amortized		unrealized		unrealized		Fair
March 31, 2018	cost		gains		losses		value
U.S. Government and Agency securities	$	10,534	$	22	$	(74)	$	10,482
Municipal securities		63,520		409		(619)		63,310
Trust preferred securities		6,007		1		(159)		5,849
Agency mortgage-backed securities		53,494		105		(852)		52,747
Private-label mortgage-backed securities		830		79		—		909
Asset-backed securities		27		—		(2)		25
	$	134,412	$	616	$	(1,706)	$	133,322

(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
	$	127,182	$	1,200	$	(1,046)	$	127,336

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

(Dollars in thousands)	Amortized cost		Fair value
Due in one year or less	$	5,174	$	5,199
Due after one year through five years		45,530		45,705
Due after five years through ten years		25,583		25,062
Due after ten years		3,801		3,700
		80,088		79,666
Mortgage-backed securities		54,324		53,656
	$	134,412	$	133,322

Composition Of Net Realized Securities Gains

	For the Three Months Ended
	March 31,
(Dollars in thousands)	2018		2017
Gross gains realized	$	—	$	2
Gross losses realized		—		—
Net gains realized	$	—	$	2

Schedule Of Unrealized Loss On Investments

	March 31, 2018
	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	$	5,588	$	(37)	7	$	3,331	$	(37)	10	$	8,919	$	(74)	17
Municipal securities		26,203		(339)	41		7,365		(280)	14		33,568		(619)	55
Trust preferred securities		1,867		(50)	2		3,700		(109)	4		5,567		(159)	6
Agency mortgage-backed securities		25,164		(337)	46		18,900		(515)	40		44,064		(852)	86
Asset-backed securities		18		(1)	1		5		(1)	1		23		(2)	2
Total temporarily impaired   securities	$	58,840	$	(764)	97	$	33,301	$	(942)	69	$	92,141	$	(1,706)	166

	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
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

Other Than Temporary Impairment, Credit Losses Recognized In Earnings

	Three Months Ended
(Dollars in thousands)	March 31,
	2018		2017
Balance of cumulative credit-related OTTI at January 1	$	595	$	595
Additions for credit-related OTTI not previously recognized		—		—
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 March 31	$	595	$	595