OTHER LONG-TERM ASSETS (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Aug. 31, 2018	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Investment Holdings [Line Items]
Investments, net			$ 1,579	$ 1,579
Operating lease right-of-use assets			$ 735	$ 1,955
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]			Other long-term assets	Other long-term assets
Prepaid asset and deposits			$ 2,456	$ 1,936
Other			698	1,031
Other long-term assets			5,468	$ 6,501
Investment, long-term receivable, credit loss expense		$ 1,900
Credit loss allowance			$ 1,900
NES
Investment Holdings [Line Items]
Convertible secured notes receivable	$ 3,000
Payment for convertible secured promissory note	$ 3,000
Convertible note, interest rate	10.00%