CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income	$ 14,514	$ 12,279
Change in securities available for sale:
Unrealized holding gain on securities available for sale arising during the period	713	7,547
Reclassification adjustment for gains included in net income	(3)	(52)
Net securities gain activity during the period	710	7,495
Tax effect	(265)	(2,306)
Net of tax amount	445	5,189
Defined benefit pension plans:
Amortization of net actuarial loss	66	54
Net gain activity during the period	66	54
Tax effect	(26)	(22)
Net of tax amount	40	32
Total other comprehensive income, net of tax	485	5,221
Comprehensive income	$ 14,999	$ 17,500