Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 29,874	$ 24,523	$ 84,663	$ 71,990
Other comprehensive income, net of tax:
Unrealized gain (loss) on securities available for sale	15	(907)	1,243	4,110
Reclassification adjustment for net gains included in net income	(7)	1	(340)	(674)
Total unrealized gain (loss) on investment securities	8	(906)	903	3,436
Unrealized gain (loss) on derivatives	347	1,756	1,350	(5,478)
Reclassification adjustment for amounts included in net income	(183)	(466)	(821)	911
Total unrealized gain (loss) on derivatives	164	1,290	529	(4,567)
Other comprehensive income (loss)	172	384	1,432	(1,131)
Comprehensive Income	$ 30,046	$ 24,907	$ 86,095	$ 70,859