INVESTMENT IN EQUITY SECURITIES (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2016	Dec. 31, 2020
Marketable Securities [Line Items]
Unrealized loss on investment in equity securities	$ 0	$ (1,347)
RESI
Marketable Securities [Line Items]
Number of investment shares acquired (in shares)			4,100,000
Number of securities outstanding (in shares)	0			0
Unrealized loss on investment in equity securities	$ 0	(1,300)
Investment income, dividend	$ 0	$ 500