Fair Value Measurements And Fair Values Of Financial Instruments (Schedule Level 3 Assets Measured At Fair Value On A Nonrecurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis $ 3,058 $ 8,669
Foreclosed Real Estate [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis 1,198 3,098
(Level 3) Significant Other Unobservable Inputs [Member] | Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis 3,058 8,669
Valuation Techniques Appraisal [1] Appraisal [1]
Unobservable Input Appraisal adjustments [2] Appraisal adjustments [2]
Weighted Average 16.00% 19.00%
(Level 3) Significant Other Unobservable Inputs [Member] | Foreclosed Real Estate [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets measured at fair value on a nonrecurring basis $ 1,198 $ 3,098
Valuation Techniques Appraisal [1] Appraisal [1]
Unobservable Input Appraisal adjustments [2] Appraisal adjustments [2]
Weighted Average 64.00% 45.00%
Minimum [Member] | (Level 3) Significant Other Unobservable Inputs [Member] | Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 13.00% 13.00%
Minimum [Member] | (Level 3) Significant Other Unobservable Inputs [Member] | Foreclosed Real Estate [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 15.00% 8.00%
Maximum [Member] | (Level 3) Significant Other Unobservable Inputs [Member] | Impaired Loans [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 25.00% 27.00%
Maximum [Member] | (Level 3) Significant Other Unobservable Inputs [Member] | Foreclosed Real Estate [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Range 68.00% 67.00%
[1] Fair value is generally determined through independent appraisals, which generally include various level 3 inputs that are not identifiable.
[2] Appraisals may be adjusted downward by the Corporation's management for qualitative factors such as economic conditions, and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.