Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net unrealized holding gain from available for sale securities arising during the period, tax	$ 10,200	$ (17,498)	$ (1,902)
Reclassification adjustment of net gain from sale of available for sale securities included in income, tax	200	163	1,316
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	0	780	0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost, tax	$ (54)	$ (135)	$ (38)