ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassification Out of Accumulated Other Comprehensive Income (Loss) (Detail) - Reclassification Out Of Accumulated Other Comprehensive Income [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	$ (7,879)	$ 0
Reclassification from AOCI, Current Period, Tax	0	0
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(7,879)	0
Net gain on sale of investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	(8,247)	0
Provsion For Credit Losses [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	$ 368	$ 0