CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 45,222	$ 54,070	$ 46,214
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Unrealized holding (loss) gain on securities—available-for-sale arising during the period	(645)	4,319	(8,066)
Income tax benefit (expense) related to securities—available-for-sale unrealized holding gains (losses)	249	(1,555)	2,896
Reclassification for net (gains) losses on securities—available-for-sale realized in earnings	(119)	(41)	116
Income tax benefit (expense) related to securities—available-for-sale realized (gains) losses	43	15	(42)
Other comprehensive income (loss)	(472)	2,738	(5,096)
COMPREHENSIVE INCOME	$ 44,750	$ 56,808	$ 41,118