CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 85,385	$ 45,222	$ 54,070
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Unrealized holding (loss) gain on securities—available-for-sale arising during the period	(3,940)	(645)	4,319
Income tax benefit (expense) related to securities—available-for-sale unrealized holding gains (losses)	1,414	249	(1,555)
Reclassification for net gains on securities—available-for-sale realized in earnings	(311)	(119)	(41)
Income tax benefit related to securities—available-for-sale realized gains	112	43	15
Other comprehensive income (loss)	(2,725)	(472)	2,738
COMPREHENSIVE INCOME	$ 82,660	$ 44,750	$ 56,808