ORGANIZATION AND BASIS OF PRESENTATION (Details) $ in Thousands		9 Months Ended	12 Months Ended
	May 27, 2021 USD ($)	Sep. 30, 2021 USD ($) installment	Dec. 31, 2019 USD ($)	Oct. 06, 2021	Dec. 31, 2020 USD ($)
Summary of significant accounting policies
Total assets		$ 220,930			$ 265,685
Contributions for the creation of Pointillist			$ 8,500
Pointillist, Inc.
Summary of significant accounting policies
Debt instrument, face amount	$ 1,300
Threshold for sale of equity	$ 5,000
Pointillist, Inc. | Convertible debt payable to related parties | Convertible Notes Due January 2023
Summary of significant accounting policies
Interest rate	7.00%
Pointillist Management | Pointillist, Inc.
Summary of significant accounting policies
Noncontrolling ownership percentage		12.10%
Pointillist, Inc. | Subsequent Event
Summary of significant accounting policies
Equity Method Investment, Ownership Percentage				69.00%
Pointillist, Inc. | Pointillist, Inc.
Summary of significant accounting policies
Pointillist Valuation	$ 13,100
Variable Interest Entity, Primary Beneficiary
Summary of significant accounting policies
Number of terms | installment		3
Agreement term		5 years
Total assets		$ 1,200			2,300
Total liabilities		$ 800			$ 100