Loans And Allowance For Loan Losses (Adequacy Of The Allowance For Loan Losses By Estimating The Probable Losses In Various Categories Of The Loan Portfolio) (Details) (USD $) In Thousands	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Loans And Allowance For Loan Losses [Abstract]
Loans specifically evaluated as impaired	$ 4,211		$ 3,152	$ 2,633
Remaining portfolio	30,090		27,954	27,380
Total allowance for loan losses	$ 34,301	$ 33,406	$ 31,106	$ 30,013

The allowance for loan and lease losses represents the reserve to cover probable credit losses related to specifically identified loans and leases, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for loan losses in connection with business combinations determined to be appropriate.

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