Loans (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Loans secured by real estate	69.00%
Loans secured for general commercial uses	31.00%
Nonaccrual loans	$ 4,531,000	$ 7,361,000
Interest income earned on nonaccrual loans	108,000	464,000	1,200,000
Past due loans greater than 90 days and still accruing
Nonperforming loans minimum threshold for individual impairment evaluation	50,000
Recorded investment in loans considered to be impaired	13,093,000	9,452,000
Loans classified as troubled debt restructurings	12,120,000	4,500,000
Recorded investment classified as nonaccrual loans	2,200,000
Charge-offs on troubled debt restructurings	1,172,000	1,519,000
TDR's not included in nonaccrual	923,000
TDR's with a specific impairment amount, total recorded investment	1,400,000
Troubled debt restructurings, Total recorded investment impairment amount	659,000
Serviced loans	89,000,000	83,700,000
Amounts held in escrow	648,000	662,000
Unfunded loan commitments	136,000	198,000
Two Charge-offs [Member]
Charge-offs on troubled debt restructurings	$ 280,000