SEGMENT REPORTING - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 2,950	$ 3,537
Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	257	324
Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	2,693	3,213
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	451	626
United States | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	257	324
United States | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	194	302
Malaysia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	2,333	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	2,333	2,703
Other foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	166	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	$ 166	$ 208