SEGMENT REPORTING - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 27,473	$ 3,537
Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	201	324
Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	2,155	3,213
Energy operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	25,117
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	25,410	626
United States | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	201	324
United States | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	92	302
United States | Energy operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	25,117
Malaysia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	1,949	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	1,949	2,703
Malaysia | Energy operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	0
Other foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	114	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	114	$ 208
Other foreign countries | Energy operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived tangible assets	$ 0