Allowance For Loan Losses (Unfunded Commitment to Lend) (Details) (USD $) In Millions, unless otherwise specified			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Real estate - construction [Member]	Jun. 30, 2012 Equity lines of credit [Member]	Jun. 30, 2012 Letters of credit [Member]
Unfunded Commitments [Line Items]
Expected usage percentage of remaining unfunded commitments			100.00%	50.00%	10.00%
Reserve for unfunded commitments	$ 1.1	$ 0.6