CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Unrealized holding gains(losses) on securities available-for-sale arising during period, tax effects	$ (1,649)	$ 1,189	$ (1,723)	$ (2,749)
Reclassification adjustment for gains included in net income, tax effect	1	0	1	158
Unrealized gain (loss) on cash flow hedging derivatives, tax effect	950	50	668	1,070
Reclassification of amortization of prior service cost included in net periodic cost, tax effect	$ (20)	$ (13)	$ (61)	$ (40)