Loans And Allowance For Loan Losses (Interest Income Recognized on Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 940	$ 929	$ 1,877	$ 1,858
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	236	85	471	170
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	249	186	498	373
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	105	204	210	407
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	9	7	17	14
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	19	0	38	0
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	1	0	1	0
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 321	$ 447	$ 642	$ 894