CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 39,700	$ 32,424	$ 73,046	$ 61,214
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Unrealized holding gain (loss) on available-for-sale securities arising during the period	20,751	(8,305)	37,407	(23,073)
Reclassification for net loss (gain) on available-for-sale securities realized in earnings	27	(49)	26	(51)
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, before Tax, after Reclassification Adjustment	296	(258)	470	(14,067)
Income tax related to other comprehensive (loss) income	(5,058)	2,091	(9,097)	8,893
Other comprehensive income (loss)	16,016	(6,521)	28,806	(28,298)
COMPREHENSIVE INCOME	$ 55,716	$ 25,903	$ 101,852	$ 32,916

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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