Loans And Allowance For Loan Losses (Interest Income Recognized on Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Loans And Allowance For Loan Losses [Line Items]
Interest Income Recognized	$ 749	$ 870
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest Income Recognized	105	101
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest Income Recognized	250	260
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest Income Recognized	54	96
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest Income Recognized	14	18
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest Income Recognized	$ 326	$ 395