Loans And Related Allowances For Loan Losses (Allowance For Loan Losses Summarized By Loan Portfolio Segments) (Details) (USD $)
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]            
Total Allowance For Loan Losses $ 16,770,000 $ 17,213,000 $ 19,480,000 $ 21,001,000 $ 21,409,000 $ 22,138,000
Individually evaluated for impairment 1,616,000   3,951,000      
Collectively evaluated for impairment 15,154,000   15,529,000      
Commercial Real Estate [Member]
           
Financing Receivable, Allowance for Credit Losses [Line Items]            
Total Allowance For Loan Losses 5,856,000 6,635,000 6,218,000 6,112,000 7,948,000 8,658,000
Individually evaluated for impairment 15,000   92,000      
Collectively evaluated for impairment 5,841,000   6,126,000      
Acquisition and Development [Member]
           
Financing Receivable, Allowance for Credit Losses [Line Items]            
Total Allowance For Loan Losses 6,209,000 5,879,000 7,190,000 8,440,000 7,131,000 6,345,000
Individually evaluated for impairment 1,582,000   2,718,000      
Collectively evaluated for impairment 4,627,000   4,472,000      
Commercial and industrial [Member]
           
Financing Receivable, Allowance for Credit Losses [Line Items]            
Total Allowance For Loan Losses 860,000 929,000 2,190,000 2,235,000 2,071,000 1,345,000
Individually evaluated for impairment 0   1,139,000      
Collectively evaluated for impairment 860,000   1,051,000      
Residential Mortgage [Member]
           
Financing Receivable, Allowance for Credit Losses [Line Items]            
Total Allowance For Loan Losses 3,457,000 3,377,000 3,430,000 3,714,000 3,851,000 4,211,000
Individually evaluated for impairment 19,000   2,000      
Collectively evaluated for impairment 3,438,000   3,428,000      
Consumer [Member]
           
Financing Receivable, Allowance for Credit Losses [Line Items]            
Total Allowance For Loan Losses 388,000 393,000 452,000 500,000 408,000 1,579,000
Individually evaluated for impairment 0   0      
Collectively evaluated for impairment $ 388,000   $ 452,000