CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 16,421	$ 12,898	$ 25,783	$ 20,110
Securities available-for-sale:
Change in net unrealized gains (losses) on securities available-for-sale	(4,967)	1,562	(12,793)	(14)
Reclassification of net gains (losses) included in net income	66	0	66	0
Reclassification of unrealized losses on securities transferred to held-to-maturity	0	0	2,188	0
Tax effect	(1,029)	547	(2,213)	(5)
Other comprehensive loss, net of tax, for securities available-for-sale	(3,872)	1,015	(8,326)	(9)
Securities held-to-maturity:
Reclassification of unrealized losses on securities transferred from available-for-sale	0	0	(2,188)	0
Amortization of unrealized losses on securities transferred from available-for-sale	79	0	98	0
Other comprehensive loss, net of tax, for securities held-to-maturity	79	0	(2,090)	0
OTHER COMPREHENSIVE LOSS, NET OF TAX	(3,793)	1,015	(10,416)	(9)
COMPREHENSIVE INCOME	$ 12,628	$ 13,913	$ 15,367	$ 20,101