CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 31,497	$ 23,268
Securities:
Net change in unrealized gain/(loss) on securities	29,965	(19,834)
Reclassification adjustment for net gains realized in net income	(1,575)	(1,441)
Income taxes	(7,281)	5,391
Other comprehensive income/(loss) on securities	21,109	(15,884)
Derivatives used in cash flow hedging relationships:
Net change in unrealized gain/(loss) on derivatives	(1,505)	1,699
Reclassification adjustment for net losses on derivatives realized in net income	158	197
Income taxes	283	(708)
Other comprehensive income/(loss) on cash flow hedges	(1,064)	1,188
Other comprehensive income/(loss)	20,045	(14,696)
TOTAL COMPREHENSIVE INCOME	$ 51,542	$ 8,572