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Investment Securities (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Investment [Line Items]          
Gross investment gains $ 28,000 $ 120,000 $ 28,000 $ 182,000  
Gross investment losses       5,000  
Investment Securities:          
Consolidated investment securities portfolio modified, years     2 years 9 months 18 days    
Proceeds from sales of investment securities - available for sale 519,000 $ 2,500,000 $ 519,000 $ 5,242,000  
Book value of securities available for sale and held to maturity $ 98,457,000   $ 98,457,000   $ 104,780,000
Positions considered temporarily impaired 51   51    
Standard & Poor's, AAA Rating [Member]          
Investment [Line Items]          
Portfolio rated 81.90%   81.90%   84.10%
Standard & Poor's, A Rating [Member]          
Investment [Line Items]          
Portfolio rated 3.90%   3.90%