PROPERTY AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment, net	$ 5,222	$ 6,201
United States
Property, Plant and Equipment [Line Items]
Total property and equipment, net	1,653	2,098
EMEA
Property, Plant and Equipment [Line Items]
Total property and equipment, net	2,913	3,436
All other countries
Property, Plant and Equipment [Line Items]
Total property and equipment, net	$ 656	$ 667