ORGANIZATION AND BASIS OF PRESENTATION (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021 USD ($) term	Dec. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)
Summary of significant accounting policies
Total assets	$ 239,701		$ 265,685
Contributions for the creation of Pointillist		$ 8,500
Variable Interest Entity, Primary Beneficiary
Summary of significant accounting policies
Number of terms | term	3
Agreement term	5 years
Total assets	$ 1,900		2,300
Total liabilities	$ 700		$ 100
Pointillist Management | Pointillist, Inc.
Summary of significant accounting policies
Noncontrolling ownership percentage	12.10%