SEGMENT REPORTING - Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Fair Value	$ 126,345	$ 361,778
Equity securities without readily determinable fair value	5,816	5,816
Investment securities - equity method investments	73,020	30,934
Cost	205,181	398,528
Other parent assets	135,355	172,726
Total assets	561,699	798,856
Intellectual property operations
Segment Reporting Information [Line Items]
Total assets	169,561	175,286
Industrial operations
Segment Reporting Information [Line Items]
Total assets	$ 51,602	$ 52,316