Loans And Allowance For Loan Losses (Age Analysis Of Past Due Loans) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Loans receivable $ 1,399,991 $ 1,270,903 $ 1,378,735
Noncovered [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30-89 days past due 7,673 6,848  
90 days and greater past due 9,413 19,872  
Total past due 17,086 26,720  
Current 1,382,905 1,244,183  
Loans receivable 1,399,991 1,270,903  
Recorded loans > 90 days and accruing 137 53  
Other [Member] | Noncovered [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30-89 days past due 162 128  
90 days and greater past due 1 53  
Total past due 163 181  
Current 21,793 30,903  
Loans receivable 21,956 31,084  
Recorded loans > 90 days and accruing   3  
Real Estate Mortgage [Member] | Commercial Real Estate [Member] | Noncovered [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30-89 days past due 4,053 3,851  
90 days and greater past due 2,195 7,766  
Total past due 6,248 11,617  
Current 746,723 740,662  
Loans receivable 752,971 752,279  
Real Estate Mortgage [Member] | One-To-Four Family Residential [Member] | Noncovered [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30-89 days past due 122 302  
90 days and greater past due 1,100 513  
Total past due 1,222 815  
Current 76,309 83,173  
Loans receivable 77,531 83,988  
Real Estate Construction [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Loans receivable 197,123 148,494 134,791
Real Estate Construction [Member] | Commercial Real Estate [Member] | Noncovered [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30-89 days past due 2,177 569  
90 days and greater past due 73 2,721  
Total past due 2,250 3,290  
Current 184,409 140,558  
Loans receivable 186,659 143,848  
Real Estate Construction [Member] | One-To-Four Family Residential [Member] | Noncovered [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Current 10,464 4,646  
Loans receivable 10,464 4,646  
Commercial [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Loans receivable 350,410 255,058 242,535
Commercial [Member] | Noncovered [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30-89 days past due 1,159 1,998  
90 days and greater past due 6,044 8,819  
Total past due 7,203 10,817  
Current 343,207 244,241  
Loans receivable 350,410 255,058  
Recorded loans > 90 days and accruing $ 137 $ 50