SEGMENT REPORTING - Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total parent assets	$ 137,240	$ 150,033
Total assets	775,546	756,394
Long-lived tangible assets	209,846	215,545
Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	2,395	3,498
Intellectual property operations
Segment Reporting Information [Line Items]
Total assets	249,188	213,854
Long-lived tangible assets	105	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	49,293	48,438
Long-lived tangible assets	1,042	1,244
Industrial operations | Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	0	925
Energy operations
Segment Reporting Information [Line Items]
Total assets	204,647	209,355
Long-lived tangible assets	188,237	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	135,178	134,714
Long-lived tangible assets	20,462	21,740
Manufacturing Operations | Asia Pacific
Segment Reporting Information [Line Items]
Long-lived tangible assets	$ 2,395	$ 2,573