Allowance For Credit Losses (Allowance for Credit Losses and Recorded Investments in Loans Receivables) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 6,214	$ 6,443	$ 6,164	$ 5,884	$ 5,884
Charge-offs	(91)	(521)	(985)	(894)	(1,312)
Recoveries	59	23	103	103	112
Provisions	375	426	1,275	1,278	1,480
Ending balance	6,557	6,371	6,557	6,371	6,164
Ending balance: individually evaluated for impairment	849	355	849	355	1,185
Ending balance: collectively evaluated for impairment	5,708	6,016	5,708	6,016	4,979
Loans receivables, Ending Balance	402,377	411,374	402,377	411,374	403,684
Loans receivables, Ending Balance: individually evaluated for impairment	7,298	8,134	7,298	8,134	7,574
Loans receivable, Ending Balance: collectively evaluated for impairment	395,079	403,240	395,079	403,240	396,110
Reserve for unfunded loan commitments			106	109	99
Commercial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	4,800	4,685	4,945	4,387	4,387
Charge-offs	(10)	(408)	(876)	(428)	(768)
Recoveries	23	2	26	7	9
Provisions	486	(21)	1,204	292	1,317
Ending balance	5,299	4,258	5,299	4,258	4,945
Ending balance: individually evaluated for impairment	849	254	849	254	1,185
Ending balance: collectively evaluated for impairment	4,450	4,004	4,450	4,004	3,760
Loans receivables, Ending Balance	334,878	337,683	334,878	337,683	333,417
Loans receivables, Ending Balance: individually evaluated for impairment	4,712	5,839	4,712	5,839	5,348
Loans receivable, Ending Balance: collectively evaluated for impairment	330,166	331,844	330,166	331,844	328,069
Reserve for unfunded loan commitments			97	92	90
Leases financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	5	19	10	86	86
Charge-offs		(9)	(1)	(196)	(200)
Recoveries	26	1	36	2	3
Provisions	(28)	15	(42)	134	121
Ending balance	3	26	3	26	10
Ending balance: collectively evaluated for impairment	3	26	3	26	10
Loans receivables, Ending Balance	62	264	62	264	191
Loans receivables, Ending Balance: individually evaluated for impairment	33	65	33	65	61
Loans receivable, Ending Balance: collectively evaluated for impairment	29	199	29	199	130
Residential mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	378	386	383	454	454
Charge-offs	(81)	(72)	(99)	(238)	(280)
Recoveries	5	12	15	74	79
Provisions	104	171	107	207	130
Ending balance	406	497	406	497	383
Ending balance: individually evaluated for impairment		101		101
Ending balance: collectively evaluated for impairment	406	396	406	396	383
Loans receivables, Ending Balance	25,858	26,975	25,858	26,975	26,461
Loans receivables, Ending Balance: individually evaluated for impairment	2,390	2,020	2,390	2,020	2,014
Loans receivable, Ending Balance: collectively evaluated for impairment	23,468	24,955	23,468	24,955	24,447
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	268	482	260	482	482
Charge-offs		(32)	(9)	(32)	(64)
Recoveries	5	8	26	20	21
Provisions	(12)	(12)	(16)	(24)	(179)
Ending balance	261	446	261	446	260
Ending balance: collectively evaluated for impairment	261	446	261	446	260
Loans receivables, Ending Balance	41,579	46,452	41,579	46,452	43,615
Loans receivables, Ending Balance: individually evaluated for impairment	163	210	163	210	151
Loans receivable, Ending Balance: collectively evaluated for impairment	41,416	46,242	41,416	46,242	43,464
Reserve for unfunded loan commitments			9	17	9
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	763	871	566	475	475
Provisions	(175)	273	22	669	91
Ending balance	588	1,144	588	1,144	566
Ending balance: collectively evaluated for impairment	$ 588	$ 1,144	$ 588	$ 1,144	$ 566