Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 67,420	$ 77,236
OTHER COMPREHENSIVE (LOSS) INCOME
Unrealized holding (losses) gains arising during the period on available-for-sale securities	(125,717)	55,569
Less: Reclassification adjustment for realized gains included in net income	5,471	32,095
Other comprehensive (loss) income, before tax effect	(131,188)	23,474
Less: Tax effect of other comprehensive (loss) income	(34,286)	6,135
TOTAL OTHER COMPREHENSIVE (LOSS) INCOME	(96,902)	17,339
COMPREHENSIVE (LOSS) INCOME	$ (29,482)	$ 94,575