Allowance For Credit Losses (Age Analysis of Past Due Loans Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 to 59 Days Past Due	$ 5,001	$ 1,017
60 to 89 Days Past Due	2,374	319
Greater than 90 Days	11,669	8,035
Total Past Due	19,044	9,371
Current	382,989	387,127
Total Loans Receivables	402,033	396,498
Loans Receivable >90 Days and Accruing	827	869
Residential mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 to 59 Days Past Due	641	692
60 to 89 Days Past Due	59	319
Greater than 90 Days	2,619	2,256
Total Past Due	3,319	3,267
Current	21,865	22,568
Total Loans Receivables	25,184	25,835
Loans Receivable >90 Days and Accruing	107	60
Commercial mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 to 59 Days Past Due	3,433	68
60 to 89 Days Past Due	2,106
Greater than 90 Days	4,612	3,514
Total Past Due	10,151	3,582
Current	226,009	230,620
Total Loans Receivables	236,160	234,202
Loans Receivable >90 Days and Accruing	720	710
Commercial term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 to 59 Days Past Due	603
Total Past Due	603
Current	84,273	81,888
Total Loans Receivables	84,876	81,888
Commercial construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days	4,326	2,031
Total Past Due	4,326	2,031
Current	8,863	10,216
Total Loans Receivables	13,189	12,247
Lease financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater than 90 Days	26	28
Total Past Due	26	28
Current	5	39
Total Loans Receivables	31	67
Consumer: Home equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 to 59 Days Past Due	182	162
60 to 89 Days Past Due	191
Greater than 90 Days	63	152
Total Past Due	436	314
Current	35,481	35,008
Total Loans Receivables	35,917	35,322
Loans Receivable >90 Days and Accruing		92
Consumer: Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 to 59 Days Past Due	142	95
60 to 89 Days Past Due	18
Greater than 90 Days	23	54
Total Past Due	183	149
Current	6,493	6,788
Total Loans Receivables	6,676	6,937
Loans Receivable >90 Days and Accruing		$ 7