Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 27,772	$ 24,145	$ 54,789	$ 47,467
Other comprehensive income, net of tax:
Unrealized gain on securities available for sale	521	1,437	1,227	5,015
Reclassification adjustment for net gains included in net income	(16)	(299)	(332)	(673)
Total unrealized gain on investment securities	505	1,138	895	4,342
Unrealized gain (loss) on derivatives	(75)	(970)	1,003	(5,412)
Reclassification adjustment for amounts included in net income	(270)	(445)	(638)	(445)
Total unrealized (loss) gain on derivatives	(345)	(1,415)	365	(5,857)
Other comprehensive income (loss)	160	(277)	1,260	(1,515)
Comprehensive Income	$ 27,932	$ 23,868	$ 56,049	$ 45,952