Allowance for Credit Losses (Allowance For Credit Losses And Recorded Investments In Loans Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 5,418	$ 5,172	$ 5,373	$ 4,935	$ 4,935
Charge-offs	(740)	(133)	(1,089)	(230)
Recoveries	4	8	73	12
Provisions	585	200	910	530
Ending balance	5,267	5,247	5,267	5,247	5,373
Ending balance: individually evaluated for impairment	67		67		334
Ending balance: collectively evaluated for impairment	5,200		5,200		5,039
Ending balance: Loans receivables	816,525		816,525		817,529
Ending Balance: individually evaluated for impairment	6,377		6,377		6,919
Ending Balance: collectively evaluated for impairment	808,997		808,997		808,925
Reserve for unfunded loan commitments included in other liabilities			340	190	345
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: Loans receivables	1,151		1,151		1,685
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	247	220	349	216	216
Charge-offs		(122)		(206)
Recoveries		7	2	8
Provisions	(2)	209	(106)	296
Ending balance	245	314	245	314	349
Ending balance: individually evaluated for impairment	38		38		143
Ending balance: collectively evaluated for impairment	207		207		206
Ending balance: Loans receivables	86,632		86,632		87,581
Ending Balance: individually evaluated for impairment	1,804		1,804		1,760
Ending Balance: collectively evaluated for impairment	84,817		84,817		85,810
Residential Mortgage [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: Loans receivables	11		11		11
Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	2,597	2,376	2,531	2,375	2,375
Charge-offs	(249)		(483)
Recoveries			50
Provisions	286	(6)	536	(5)
Ending balance	2,634	2,370	2,634	2,370	2,531
Ending balance: collectively evaluated for impairment	2,634		2,634		2,531
Ending balance: Loans receivables	453,453		453,453		465,486
Ending Balance: individually evaluated for impairment	1,753		1,753		2,919
Ending Balance: collectively evaluated for impairment	450,560		450,560		460,893
Reserve for unfunded loan commitments included in other liabilities			9	3	4
Commercial Mortgage [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending balance: Loans receivables	1,140		1,140		1,674
Commercial Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	774	948	709	989	989
Charge-offs	(491)	(11)	(596)	(24)
Recoveries	3		19	1
Provisions	339	(46)	493	(75)
Ending balance	625	891	625	891	709
Ending balance: individually evaluated for impairment					97
Ending balance: collectively evaluated for impairment	625		625		612
Ending balance: Loans receivables	118,490		118,490		123,175
Ending Balance: individually evaluated for impairment	1,510		1,510		198
Ending Balance: collectively evaluated for impairment	116,980		116,980		122,977
Reserve for unfunded loan commitments included in other liabilities			140	117	135
Commercial Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,059	765	969	569	569
Charge-offs
Recoveries				1
Provisions	149	101	239	296
Ending balance	1,208	866	1,208	866	969
Ending balance: individually evaluated for impairment					89
Ending balance: collectively evaluated for impairment	1,208		1,208		880
Ending balance: Loans receivables	92,157		92,157		72,755
Ending Balance: individually evaluated for impairment	447		447		1,242
Ending Balance: collectively evaluated for impairment	91,710		91,710		71,513
Reserve for unfunded loan commitments included in other liabilities			173	57	190
Leases Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Charge-offs
Recoveries			1	1
Provisions			(1)	(1)
Consumer: Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	196	188	196	195	195
Charge-offs
Provisions	(7)	3	(7)	(4)
Ending balance	189	191	189	191	196
Ending balance: collectively evaluated for impairment	189		189		196
Ending balance: Loans receivables	59,829		59,829		62,560
Ending Balance: individually evaluated for impairment	552		552		544
Ending Balance: collectively evaluated for impairment	59,277		59,277		62,016
Reserve for unfunded loan commitments included in other liabilities			18	13	16
Consumer: Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	63	67	61	64	64
Charge-offs			(10)
Recoveries	1	1	1	1
Provisions	20	(4)	32	(1)
Ending balance	84	64	84	64	61
Ending balance: individually evaluated for impairment	29		29		5
Ending balance: collectively evaluated for impairment	55		55		56
Ending balance: Loans receivables	5,964		5,964		5,972
Ending Balance: individually evaluated for impairment	311		311		256
Ending Balance: collectively evaluated for impairment	5,653		5,653		5,716
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	482	608	558	527	527
Charge-offs
Provisions	(200)	(57)	(276)	24
Ending balance	282	$ 551	282	$ 551	558
Ending balance: collectively evaluated for impairment	$ 282		$ 282		$ 558