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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 10,724	$ 10,206	$ 33,441	$ 26,128
Unrealized gains/(losses) on available for sale securities:
Unrealized holding gains/(losses) arising during the period	(1,576)	99	(5,163)	934
Reclassification adjustment for amounts included in net income	288		288
Before tax	(1,288)	99	(4,875)	934
Tax effect	315	(37)	1,150	(353)
Net of tax	(973)	62	(3,725)	581
Unrealized gains on cash flow hedges:
Unrealized holding gains/(losses) arising during the period	843	222	2,412	1,023
Reclassification adjustment for amounts included in net income	(31)		(93)
Before tax	812	222	2,319	1,023
Tax effect	(298)	(91)	(722)	(418)
Net of tax	514	131	1,597	605
Total other comprehensive income/(loss)	(459)	193	(2,128)	1,186
Total comprehensive income	$ 10,265	$ 10,399	$ 31,313	$ 27,314

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