Accumulated Other Comprehensive Loss - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reclassifications out of accumulated other comprehensive income
Net securities gains, available for sale	$ 253	$ 526	$ 1,174	$ 1,713
Income tax provision	(1,273)	(957)	(3,307)	(2,630)
Salaries and employee benefits	(4,507)	(4,302)	(13,433)	(13,073)
NET INCOME	3,059	3,364	9,529	10,152
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	253	526	1,174	1,713
Income tax provision	(86)	(179)	(398)	(582)
NET INCOME	167	347	776	1,131
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	13	40	40
Salaries and employee benefits	(39)	(39)	(117)	(119)
NET INCOME	$ (26)	$ (26)	$ (77)	$ (79)