Allowance for Loan Losses (Allocation for Loan Losses and the Related Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	$ 5,147	$ 4,215	$ 3,709
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	750	126
Allowance for Loan Losses, Ending balance: collectively evaluted for impairment	4,397	4,089
Total Loan Receivables	505,553	423,586
Loans receivables, Ending balance: individually evaluated for impairment	12,655	13,427
Loans receivables, Ending balance: collectively evaluated for impairment	492,898	410,159
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	2,007	1,264	1,014
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	411	107
Allowance for Loan Losses, Ending balance: collectively evaluted for impairment	1,596	1,157
Total Loan Receivables	204,904	171,792
Loans receivables, Ending balance: individually evaluated for impairment	7,620	8,484
Loans receivables, Ending balance: collectively evaluated for impairment	197,284	163,308
Commercial construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	660	352	443
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	198
Allowance for Loan Losses, Ending balance: collectively evaluted for impairment	462	352
Total Loan Receivables	19,717	13,414
Loans receivables, Ending balance: individually evaluated for impairment	3,615	3,974
Loans receivables, Ending balance: collectively evaluated for impairment	16,102	9,440
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	394	423	325
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	11	19
Allowance for Loan Losses, Ending balance: collectively evaluted for impairment	383	404
Total Loan Receivables	28,696	26,879
Loans receivables, Ending balance: individually evaluated for impairment	302	417
Loans receivables, Ending balance: collectively evaluated for impairment	28,394	26,462
Residential real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	1,677	1,691	1,309
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	130
Allowance for Loan Losses, Ending balance: collectively evaluted for impairment	1,547	1,691
Total Loan Receivables	250,854	210,361
Loans receivables, Ending balance: individually evaluated for impairment	1,118	552
Loans receivables, Ending balance: collectively evaluated for impairment	249,736	209,809
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	33	40	35
Allowance for Loan Losses, Ending balance: collectively evaluted for impairment	33	40
Total Loan Receivables	1,382	1,140
Loans receivables, Ending balance: collectively evaluated for impairment	1,382	1,140
Unallocated Financing Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	376	445	583
Allowance for Loan Losses, Ending balance: collectively evaluted for impairment	$ 376	$ 445