CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 67,275	$ 42,865	$ 29,202
Other comprehensive income (loss):
Unrealized gains (losses) on securities available for sale	(13,266)	5,976	(2,129)
Amortization of unrealized losses on securities transferred to held to maturity, net	550	596	488
Reclassification adjustment for losses (gains) included in net income	485	(86)	(368)
Benefit (provision) for income taxes	3,272	(2,483)	709
Total Other Comprehensive Income (Loss)	(8,959)	4,003	(1,300)
Comprehensive Income	$ 58,316	$ 46,868	$ 27,902