SEGMENT REPORTING - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 2,647	$ 3,537
Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	225	324
Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	2,422	3,213
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	374	626
United States | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	225	324
United States | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	149	302
Malaysia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	2,131	2,703
Malaysia | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	0	0
Malaysia | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	2,131	2,703
Other foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	142	208
Other foreign countries | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	0	0
Other foreign countries | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 142	$ 208