CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 37,773	$ 25,077	$ 98,987	$ 74,324
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF INCOME TAXES:
Unrealized holding (loss) gain on available-for-sale securities arising during the period	(10,010)	493	(33,083)	5,841
Reclassification for net gains on available-for-sale securities realized in earnings	0	(270)	(51)	(230)
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, before Tax, after Reclassification Adjustment	(336)	0	(14,403)	0
Income tax related to other comprehensive (loss) income	2,483	(105)	11,376	(2,032)
Other comprehensive (loss) income	(7,863)	118	(36,161)	3,579
COMPREHENSIVE INCOME	$ 29,910	$ 25,195	$ 62,826	$ 77,903

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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