SEGMENT REPORTING - Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total parent assets	$ 137,414	$ 150,033
Total assets	801,606	756,394
Long-lived tangible assets	212,458	215,545
Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	3,209	3,498
Intellectual property operations
Segment Reporting Information [Line Items]
Total assets	277,546	213,854
Long-lived tangible assets	111	126
Intellectual property operations | Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	0	0
Industrial operations
Segment Reporting Information [Line Items]
Total assets	48,881	48,438
Long-lived tangible assets	1,131	1,244
Industrial operations | Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	698	925
Energy operations
Segment Reporting Information [Line Items]
Total assets	203,693	209,355
Long-lived tangible assets	190,245	192,435
Energy operations | Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	0	0
Manufacturing Operations
Segment Reporting Information [Line Items]
Total assets	134,072	134,714
Long-lived tangible assets	20,971	21,740
Manufacturing Operations | Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	$ 2,511	$ 2,573