CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 20,006	$ 17,968	$ 37,699	$ 34,140
Other comprehensive income net of tax:
Unrealized holding gain (loss) on securities available for sale arising during the period, net of tax of $3,096, $2,904, $5,861 and $2,376	5,750	(5,393)	10,885	(4,413)
Unrealized gain (loss) on cash flow hedges arising during the period, net of tax of $284, $282, $969 and $165	(529)	525	(1,798)	(304)
Reclassification adjustment for net losses (gains) included in net income, net of tax of $136, $158, $371 and $77	(252)	293	(690)	(143)
Period change	4,969	(4,575)	8,397	(4,860)
Comprehensive income	$ 24,975	$ 13,393	$ 46,096	$ 29,280