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Reclassifications Out Of Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net (losses) gain on sales of investments   $ (81) $ 1,206 $ 666
Salaries and benefits $ 4,623 4,249 13,244 12,448
Provision for income taxes 1,548 1,623 4,694 4,719
Net income 3,931 3,867 11,685 11,511
Net (loss) income, net of tax $ (7) (64) 765 426
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 (81) 1,206 666
Provision for income taxes 28 (422) (226)
Net income (53) 784 440
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 $ (10) (16) (29) (21)
Provision for income taxes 3 5 10 7
Net income $ 7 $ (11) $ (19) $ (14)