Loans (Loan Receivable and Allowance Balances Disaggregated) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loan receivables:
Ending balance: individually evaluated for impairment	$ 35,360	$ 39,237
Ending balance: collectively evaluated for impairment	1,053,622	879,657
Total Loan Receivables	1,088,982	918,894
Allowance for loan losses:
Ending balance: individually evaluated for impairment	1,289	1,608
Ending balance: collectively evaluated for impairment	8,571	6,932
Total Allowance for loan losses	9,860	8,540	$ 8,481	$ 8,138
Commercial Real Estate Portfolio Segment [Member]
Loan receivables:
Ending balance: individually evaluated for impairment	21,977	21,448
Ending balance: collectively evaluated for impairment	645,128	517,440
Total Loan Receivables	667,105	538,888
Allowance for loan losses:
Ending balance: individually evaluated for impairment	806	601
Ending balance: collectively evaluated for impairment	4,406	2,864
Total Allowance for loan losses	5,212	3,465	3,528	3,051
Residential First Mortgages Portfolio Segment [Member]
Loan receivables:
Ending balance: individually evaluated for impairment	2,413	4,225
Ending balance: collectively evaluated for impairment	168,591	127,176
Total Loan Receivables	171,004	131,401
Allowance for loan losses:
Ending balance: individually evaluated for impairment	7	27
Ending balance: collectively evaluated for impairment	1,399	557
Total Allowance for loan losses	1,406	584	1,047	1,343
Residential Rentals Portfolio Segment [Member]
Loan receivables:
Ending balance: individually evaluated for impairment	3,028	4,074
Ending balance: collectively evaluated for impairment	98,869	89,083
Total Loan Receivables	101,897	93,157
Allowance for loan losses:
Ending balance: individually evaluated for impairment	36	40
Ending balance: collectively evaluated for impairment	326	498
Total Allowance for loan losses	362	538	593	532
Construction And Land Development Portfolio Segment [Member]
Loan receivables:
Ending balance: individually evaluated for impairment	3,777	4,284
Ending balance: collectively evaluated for impairment	33,157	31,905
Total Loan Receivables	36,934	36,189
Allowance for loan losses:
Ending balance: individually evaluated for impairment	178	471
Ending balance: collectively evaluated for impairment	763	632
Total Allowance for loan losses	941	1,103	1,071	584
Home Equity And Second Mortgages Portfolio Segment [Member]
Loan receivables:
Ending balance: individually evaluated for impairment	170	154
Ending balance: collectively evaluated for impairment	21,229	21,562
Total Loan Receivables	21,399	21,716
Allowance for loan losses:
Ending balance: collectively evaluated for impairment	138	142
Total Allowance for loan losses	138	142	173	249
Commercial Portfolio Segment [Member]
Loan receivables:
Ending balance: individually evaluated for impairment	3,204	4,575
Ending balance: collectively evaluated for impairment	47,280	62,671
Total Loan Receivables	50,484	67,246
Allowance for loan losses:
Ending balance: individually evaluated for impairment	123	330
Ending balance: collectively evaluated for impairment	671	1,147
Total Allowance for loan losses	794	1,477	1,677	1,916
Consumer Portfolio Segment [Member]
Loan receivables:
Ending balance: collectively evaluated for impairment	422	366
Total Loan Receivables	422	366
Allowance for loan losses:
Ending balance: collectively evaluated for impairment	3	2
Total Allowance for loan losses	3	2	3	10
Commercial Equipment Portfolio Segment [Member]
Loan receivables:
Ending balance: individually evaluated for impairment	791	477
Ending balance: collectively evaluated for impairment	38,946	29,454
Total Loan Receivables	39,737	29,931
Allowance for loan losses:
Ending balance: individually evaluated for impairment	139	139
Ending balance: collectively evaluated for impairment	865	1,090
Total Allowance for loan losses	$ 1,004	$ 1,229	$ 389	$ 453