Loans And Related Allowances For Loan Loasses (Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Financing Receivable, Modifications [Line Items]    
Nonaccrual Loans Subject To Partial Charge Off $ 22,572,000 $ 19,915,000
Reduction of the ALL Resulting From new TDRs 11,266  
Partial Charge Off [Member]
   
Financing Receivable, Modifications [Line Items]    
Nonaccrual Loans Subject To Partial Charge Off $ 6,600,000 $ 6,700,000
Troubled Debt Restructuring [Member]
   
Financing Receivable, Modifications [Line Items]    
Financing Receivable, Modifications, Number of Contracts 3