CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net Income	$ 60,100	$ 40,103	$ 25,515
Other comprehensive income (loss), net of tax:
Unrealized holding gains/(losses) on securities arising during the period, net of income tax (benefits)	4,937	(2,013)	(15)
Reclassification adjustment for net gain on sale of securities included in net income, net of income taxes	(1,801)	(1,040)	(171)
Other comprehensive income (loss), net of tax	3,136	(3,053)	(186)
Comprehensive income, net of tax	$ 63,236	$ 37,050	$ 25,329