Securities (Unrealized Losses Narrative) (Details) (USD $)			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 US States and Political Subdivisions Debt Securities [Member]	Mar. 31, 2012 US States and Political Subdivisions Debt Securities [Member]	Mar. 31, 2012 Residential Mortgage Backed Securities [Member]	Mar. 31, 2013 Corporate Debt Securities [Member]	Mar. 31, 2013 Equity Securities [Member]
Schedule of Investments [Line Items]
Gross Realized Gains on Marketable Securities					$ 228,000	$ 227,000	$ 3,000
Gross Realized Losses on Marketable Securities			4,000	4,000
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds			60,000	60,000	2,600,000	5,400,000	60,000
Available-for-sale Securities Pledged as Collateral	79,200,000	78,400,000
Available For Sale Securities Pledged As Collateral Against Government Deposits	$ 26,800,000	$ 25,100,000