CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 32,424	$ 25,454	$ 61,214	$ 49,247
OTHER COMPREHENSIVE (LOSS) INCOME, NET OF INCOME TAXES:
Unrealized holding (loss) gain on available-for-sale securities arising during the period	(8,305)	2,900	(23,073)	5,348
Reclassification for net (gains) losses on available-for-sale securities realized in earnings	(49)	54	(51)	41
Changes in fair value of junior subordinated debentures related to instrument specific credit risk	(258)	0	(14,067)	0
Income tax related to other comprehensive (loss) income	2,091	(1,064)	8,893	(1,940)
Other comprehensive (loss) income	(6,521)	1,890	(28,298)	3,449
COMPREHENSIVE INCOME	$ 25,903	$ 27,344	$ 32,916	$ 52,696

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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This item represents the estimated amount of gains and losses from fair value changes included in earnings that are attributable to changes in the instrument-specific credit risk of liabilities with fair values that have been significantly affected during the reporting period by changes in the instrument-specific credit risk.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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