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SEGMENT REPORTING - Revenue by Geographical Area (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | $ 13,507 | $ 5,803
Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 2,615 |
Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 10,892 |
Americas |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 6,324 |
Americas | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 2,103 |
Americas | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 4,221 |
United States |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 5,946 |
United States | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 2,097 |
United States | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 3,849 |
Canada and Latin America |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 378 |
Canada and Latin America | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 6 |
Canada and Latin America | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 372 |
Europe, Middle East and Africa |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 3,008 |
Europe, Middle East and Africa | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 500 |
Europe, Middle East and Africa | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 2,508 |
Asia Pacific |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 4,175 |
Asia Pacific | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 12 |
Asia Pacific | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 4,163 |
China |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 1,133 |
China | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 0 |
China | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 1,133 |
India |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 1,749 |
India | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 0 |
India | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 1,749 |
Asia-Pacific, excluding China and India |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 1,293 |
Asia-Pacific, excluding China and India | Intellectual property operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | 12 |
Asia-Pacific, excluding China and India | Industrial operations |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Revenues | $ 1,281 |

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