Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net unrealized holding gain from available for sale securities arising during the period, tax	$ (3,455)	$ 10,200	$ (17,498)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	574	200	163
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	2,878	0	780
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	$ (122)	$ (54)	$ (135)