Loans and the Allowance for Loan Losses, Activity In Period (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Allowance for loan losses by segment [Abstract]
Beginning Balance			$ 8,498,000	$ 13,228,000	$ 13,228,000
Charges-offs			(3,410,000)		(9,307,000)
Recoveries			263,000		877,000
Provision for loan losses	750,000	600,000	1,950,000	2,900,000	3,700,000
Ending Balance	7,301,000		7,301,000		8,498,000
Ending balances individually evaluated for impairment	636,000		636,000		1,028,000
Ending balances collectively evaluated for impairment	6,665,000		6,665,000		7,470,000
Ending balance, Total	7,301,000		7,301,000		8,498,000
Loan balances [Abstract]
Ending balance individually evaluated for impairment	16,741,000		16,741,000		9,593,000
Ending balance collectively evaluated for impairment	446,803,000		446,803,000		510,734,000
Ending balance	463,544,000		463,544,000		520,327,000
Commercial [Member]
Allowance for loan losses by segment [Abstract]
Beginning Balance			1,011,000	799,000	799,000
Charges-offs			(86,000)		(942,000)
Recoveries			54,000		141,000
Provision for loan losses			(374,000)		1,013,000
Ending Balance	605,000		605,000		1,011,000
Ending balances individually evaluated for impairment	13,000		13,000		23,000
Ending balances collectively evaluated for impairment	592,000		592,000		988,000
Ending balance, Total	605,000		605,000		1,011,000
Loan balances [Abstract]
Ending balance individually evaluated for impairment	100,000		100,000		129,000
Ending balance collectively evaluated for impairment	25,700,000		25,700,000		34,886,000
Ending balance	25,800,000		25,800,000		35,015,000
Real Estate Construction [Member]
Allowance for loan losses by segment [Abstract]
Beginning Balance			323,000	441,000	441,000
Charges-offs			(780,000)		0
Recoveries			0		0
Provision for loan losses			674,000		(118,000)
Ending Balance	217,000		217,000		323,000
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	217,000		217,000		323,000
Ending balance, Total	217,000		217,000		323,000
Loan balances [Abstract]
Ending balance individually evaluated for impairment	3,117,000		3,117,000		0
Ending balance collectively evaluated for impairment	10,672,000		10,672,000		19,981,000
Ending balance	13,789,000		13,789,000		19,981,000
Real Estate Mortgage [Member]
Allowance for loan losses by segment [Abstract]
Beginning Balance			6,735,000	11,498,000	11,498,000
Charges-offs			(2,232,000)		(7,822,000)
Recoveries			103,000		575,000
Provision for loan losses			1,585,000		2,484,000
Ending Balance	6,191,000		6,191,000		6,735,000
Ending balances individually evaluated for impairment	623,000		623,000		1,005,000
Ending balances collectively evaluated for impairment	5,568,000		5,568,000		5,730,000
Ending balance, Total	6,191,000		6,191,000		6,735,000
Loan balances [Abstract]
Ending balance individually evaluated for impairment	13,503,000		13,503,000		9,464,000
Ending balance collectively evaluated for impairment	379,280,000		379,280,000		406,496,000
Ending balance	392,783,000		392,783,000		415,960,000
Consumer [Member]
Allowance for loan losses by segment [Abstract]
Beginning Balance			300,000	357,000	357,000
Charges-offs			(182,000)		(333,000)
Recoveries			55,000		102,000
Provision for loan losses			51,000		174,000
Ending Balance	224,000		224,000		300,000
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	224,000		224,000		300,000
Ending balance, Total	224,000		224,000		300,000
Loan balances [Abstract]
Ending balance individually evaluated for impairment	21,000		21,000		0
Ending balance collectively evaluated for impairment	13,883,000		13,883,000		17,041,000
Ending balance	13,904,000		13,904,000		17,041,000
Other [Member]
Allowance for loan losses by segment [Abstract]
Beginning Balance			129,000	133,000	133,000
Charges-offs			(130,000)		(210,000)
Recoveries			51,000		59,000
Provision for loan losses			14,000		147,000
Ending Balance	64,000		64,000		129,000
Ending balances individually evaluated for impairment	0		0		0
Ending balances collectively evaluated for impairment	64,000		64,000		129,000
Ending balance, Total	64,000		64,000		129,000
Loan balances [Abstract]
Ending balance individually evaluated for impairment	0		0		0
Ending balance collectively evaluated for impairment	17,268,000		17,268,000		32,330,000
Ending balance	$ 17,268,000		$ 17,268,000		$ 32,330,000