Loans And Allowance For Loan Losses (Schedule Of Non Accrual Loans) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Non accrual loans	$ 18,599	$ 15,445
Commercial [Member]
Non accrual loans	1,419	1,403
Agricultural [Member]
Non accrual loans	407	3,030
Real Estate [Member]
Non accrual loans	16,563	10,675
Consumer [Member]
Non accrual loans	$ 210	$ 337