SEGMENT REPORTING - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 3,537	$ 4,183
Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	324	204
Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	3,213	3,979
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	626	677
United States | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	324	204
United States | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	302	473
Malaysia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	2,703	3,203
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	2,703	3,203
Other foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	208	303
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	$ 208	$ 303