Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016	Jun. 30, 2015
Consolidated Statements of Comprehensive Income (Parenthetical) [Abstract]
Unrealized (losses) gains arising during the period on available for sale securities, tax	$ 955		$ (642)		$ 1,144	$ (398)
Reclassification adjustment for net gain on sales of available for sale securities included in net income, tax	(73)		0		(73)	(60)
Change in defined benefit plans, tax	$ (1)	[1]	$ 1	[1]	$ (60)	$ 2

[1] Amounts are included in the computation of net periodic benefit cost and are included in salaries and employee benefits on the Consolidated Statements of Income as a separate element within total noninterest expense.