Allowance for Loan Losses (Activity in and Ending Balances Of The Allowance For Loan Losses By Loan Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				$ 12,050				$ 11,444	$ 12,050	$ 11,444	$ 12,841
Charge-offs									3,992	15,469	19,168
Recoveries									134	109	1,171
Provision (credit) for loan losses	750	850	500	(750)	10,300	616	1,500	3,550	1,350	15,966	16,600
Balance at end of year	9,542				12,050				9,542	12,050	11,444
Allowance for loan losses: ending balance: individually evaluated for impairment	2,943				3,104				2,943	3,104
Allowance for loan losses: ending balance: collectively evaluated for impairment	6,599				8,946				6,599	8,946
Loans receivable: ending balance: individually evaluated for impairment	41,015				38,199				41,015	38,199
Loans receivable: ending balance: collectively evaluated for impairment	577,106				551,517				577,106	551,517
Loans receivable: Ending balance	618,121				589,716				618,121	589,716
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				7,372				7,243	7,372	7,243
Charge-offs									1,582	8,783
Recoveries										44
Provision (credit) for loan losses									(1,811)	8,868
Balance at end of year	3,979				7,372				3,979	7,372
Allowance for loan losses: ending balance: individually evaluated for impairment	1,077				2,066				1,077	2,066
Allowance for loan losses: ending balance: collectively evaluated for impairment	2,902				5,306				2,902	5,306
Loans receivable: ending balance: individually evaluated for impairment	25,316				20,076				25,316	20,076
Loans receivable: ending balance: collectively evaluated for impairment	310,245				324,301				310,245	324,301
Loans receivable: Ending balance	335,561				344,377				335,561	344,377
Construction and Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				558				837	558	837
Charge-offs									1,004	3,719
Recoveries									105	10
Provision (credit) for loan losses									1,614	3,430
Balance at end of year	1,273				558				1,273	558
Allowance for loan losses: ending balance: individually evaluated for impairment	70				98				70	98
Allowance for loan losses: ending balance: collectively evaluated for impairment	1,203				460				1,203	460
Loans receivable: ending balance: individually evaluated for impairment	3,746				6,983				3,746	6,983
Loans receivable: ending balance: collectively evaluated for impairment	22,913				28,078				22,913	28,078
Loans receivable: Ending balance	26,659				35,061				26,659	35,061
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				1,928				1,443	1,928	1,443
Charge-offs									1,304	1,088
Provision (credit) for loan losses									1,256	1,573
Balance at end of year	1,880				1,928				1,880	1,928
Allowance for loan losses: ending balance: individually evaluated for impairment	861				629				861	629
Allowance for loan losses: ending balance: collectively evaluated for impairment	1,019				1,299				1,019	1,299
Loans receivable: ending balance: individually evaluated for impairment	6,940				8,320				6,940	8,320
Loans receivable: ending balance: collectively evaluated for impairment	96,828				79,348				96,828	79,348
Loans receivable: Ending balance	103,768				87,668				103,768	87,668
Owner occupied real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				1,963				1,575	1,963	1,575
Charge-offs										1,838
Recoveries										15
Provision (credit) for loan losses									4	2,211
Balance at end of year	1,967				1,963				1,967	1,963
Allowance for loan losses: ending balance: individually evaluated for impairment	860				311				860	311
Allowance for loan losses: ending balance: collectively evaluated for impairment	1,107				1,652				1,107	1,652
Loans receivable: ending balance: individually evaluated for impairment	3,955				1,862				3,955	1,862
Loans receivable: ending balance: collectively evaluated for impairment	122,287				100,915				122,287	100,915
Loans receivable: Ending balance	126,242				102,777				126,242	102,777
Consumer and Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				113				130	113	130
Charge-offs									102	41
Recoveries									29	40
Provision (credit) for loan losses									194	(16)
Balance at end of year	234				113				234	113
Allowance for loan losses: ending balance: individually evaluated for impairment	75								75
Allowance for loan losses: ending balance: collectively evaluated for impairment	159				113				159	113
Loans receivable: ending balance: individually evaluated for impairment	1,058				958				1,058	958
Loans receivable: ending balance: collectively evaluated for impairment	22,391				15,725				22,391	15,725
Loans receivable: Ending balance	23,449				16,683				23,449	16,683
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				23				41	23	41
Provision (credit) for loan losses									(6)	(18)
Balance at end of year	17				23				17	23
Allowance for loan losses: ending balance: collectively evaluated for impairment	17				23				17	23
Loans receivable: ending balance: collectively evaluated for impairment	2,442				3,150				2,442	3,150
Loans receivable: Ending balance	2,442				3,150				2,442	3,150
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of year				93				175	93	175
Provision (credit) for loan losses									99	(82)
Balance at end of year	192				93				192	93
Allowance for loan losses: ending balance: collectively evaluated for impairment	$ 192				$ 93				$ 192	$ 93