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Reclassifications Out Of Accumulated Other Comprehensive Income (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net gain on sales of investments $ (81) $ 138 $ 666 $ 659
Salaries and employee benefits 4,249 4,025 12,448 11,328
Provision for income taxes 1,623 1,356 4,719 3,906
Net income 3,867 3,533 11,511 9,919
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net income (64) 83 426 407
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net gain on sales of investments (81) 138 666 659
Provision for income taxes 28 (47) (226) (224)
Net income (53) 91 440 435
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Amortization Of Actuarial Gain/Loss For Supplemental Executive Retirement Plan [Member]
        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Salaries and employee benefits (16) (12) (21) (43)
Provision for income taxes 5 4 7 15
Net income $ (11) $ (8) $ (14) $ (28)