Loans (Summary Of Loans Receivable On Nonaccrual Status) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Loans [Line Items]
Total loans receivable on nonaccrual status	$ 28,360		$ 28,307
Interest income not recognized on nonaccrual loans, Total	254	94
Commercial [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	973		947
Agriculture [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	12		45
Consumer Installment Loans [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	76		104
All Other Loans [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status
Real Estate [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	27,299		27,211
Real Estate [Member] | Commercial [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	15,806		16,098
Real Estate [Member] | Construction And Land Development [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	730		775
Real Estate [Member] | Residential 1-4 Family [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	5,121		4,852
Real Estate [Member] | Multifamily [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	171		171
Real Estate [Member] | Farmland [Member]
Loans [Line Items]
Total loans receivable on nonaccrual status	$ 5,471		$ 5,315