CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 39,577	$ 37,773	$ 112,623	$ 98,987
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Unrealized holding gain (loss) on available-for-sale securities arising during the period	5,861	(10,010)	43,268	(33,083)
Reclassification for net loss (gain) on available-for-sale securities realized in earnings	2	0	28	(51)
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, before Tax, after Reclassification Adjustment	204	(336)	674	(14,403)
Income tax related to other comprehensive (loss) income	(1,457)	2,483	(10,554)	11,376
Other comprehensive income (loss)	4,610	(7,863)	33,416	(36,161)
COMPREHENSIVE INCOME	$ 44,187	$ 29,910	$ 146,039	$ 62,826

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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