CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 36,548	$ 39,577	$ 76,971	$ 112,623
OTHER COMPREHENSIVE INCOME, NET OF INCOME TAXES:
Unrealized holding (loss) gain on available-for-sale securities arising during the period	(3,090)	5,861	47,000	43,268
Income tax expense related to available-for-sale securities unrealized holding gain	(742)	1,408	11,280	10,385
Reclassification for net (gain) loss on available-for-sale securities realized in earnings	(125)	2	(296)	28
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	30	0	71	(7)
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, before Tax, after Reclassification Adjustment	(208)	204	9,483	674
Other Comprehensive Income (Loss), Change in Fair Value of Junior Subordinated Debentures, Tax	50	(49)	(2,276)	(162)
Other comprehensive (loss) income	(2,601)	4,610	42,702	33,416
COMPREHENSIVE INCOME	$ 33,947	$ 44,187	$ 119,673	$ 146,039