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Reclassifications Out Of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net (losses) gain on sales of investments $ 587 $ 350 $ 1,206 $ 747
Salaries and benefits 4,269 4,283 8,621 8,199
Provision for income taxes 1,515 1,511 3,146 3,096
Net income $ 3,873 $ 3,857 7,754 7,644
Reclassification Out Of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net (loss) income, net of tax     772 484
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net (losses) gain on sales of investments     1,206 747
Provision for income taxes     (422) (254)
Net income     784 493
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 benefits     (19) (14)
Provision for income taxes     7 5
Net income     $ (12) $ (9)