Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reclassifications out of accumulated other comprehensive income
Net securities gains, available for sale	$ 486	$ 526	$ 921	$ 1,187
Income tax provision	(1,152)	(825)	(2,034)	(1,673)
Salaries and employee benefits	(4,346)	(4,301)	(8,926)	(8,771)
NET INCOME	3,390	3,433	6,468	6,788
Amount Reclassified from Accumulated Other Comprehensive Loss | Net Unrealized Gain on Available for Sale Securities
Reclassifications out of accumulated other comprehensive income
Net securities gains, available for sale	486	526	921	1,187
Income tax provision	(165)	(179)	(312)	(404)
NET INCOME	321	347	609	783
Amount Reclassified from Accumulated Other Comprehensive Loss | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent
Reclassifications out of accumulated other comprehensive income
Income tax provision	13	27	28	27
Salaries and employee benefits	(39)	(80)	(79)	(80)
NET INCOME	$ (26)	$ (53)	$ (51)	$ (53)