CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 17,693	$ 16,172
Other comprehensive income net of tax:
Unrealized holding gain on securities available for sale arising during the period, net of tax of $2,765 and $528	5,135	980
Unrealized loss on cash flow hedges arising during the period, net of tax of $684 and $447	(1,270)	(829)
Reclassification adjustment for gains included in net income, net of tax of $236 and $235	(437)	(436)
Period change	3,428	(285)
Comprehensive income	$ 21,121	$ 15,887