SEGMENT REPORTING - Revenue by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 15,878	$ 1,582	$ 46,102	$ 24,785
Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,320		16,997
Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,558		29,105
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10,525		29,029
Americas | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,312		16,383
Americas | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	4,213		12,646
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10,307		28,249
United States | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,311		16,372
United States | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,996		11,877
Canada and Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	218		780
Canada and Latin America | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1		11
Canada and Latin America | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	217		769
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,282		7,677
Europe, Middle East and Africa | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0		589
Europe, Middle East and Africa | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,282		7,088
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,071		9,396
Asia Pacific | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	8		25
Asia Pacific | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,063		9,371
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,403		3,627
China | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0		0
China | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,403		3,627
India
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	582		2,563
India | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0		0
India | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	582		2,563
Asia-Pacific, excluding China and India
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,086		3,206
Asia-Pacific, excluding China and India | Intellectual property operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	8		25
Asia-Pacific, excluding China and India | Industrial operations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 1,078		$ 3,181