CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 23,851	$ 12,947	$ 62,581	$ 38,329
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Unrealized holding gain (loss) on available-for-sale securities arising during the period	(4,659)	1,169	14,043	2,051
Income tax benefit (expense) related to available-for-sale securities unrealized holding gain or loss	1,677	(421)	(5,060)	(738)
Reclassification for net gains on available-for-sale securities realized in earnings	(735)	0	(376)	(125)
Income tax expense related to available-for-sale securities realized gains	265	0	136	45
Other comprehensive income (loss)	(3,452)	748	8,743	1,233
COMPREHENSIVE INCOME	$ 20,399	$ 13,695	$ 71,324	$ 39,562