Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements of Comprehensive Income (Parenthetical) [Abstract]
Unrealized (losses) gains arising during the period on available for sale securities, tax		$ 189	$ 244
Reclassification adjustment for net gain on sales of available for sale securities included in net income, tax		0	(60)
Change in defined benefit plans, tax	[1]	$ (56)	$ 1

[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