SEGMENT REPORTING - Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Fair Value	$ 361,778
Equity securities without readily determinable fair value	5,816				$ 143,257
Equity Method Investments	30,934
Cost	398,528
Other parent assets	172,726
Total assets	798,856	$ 746,080	$ 623,825	$ 564,898	$ 511,307
Intellectual property operations
Segment Reporting Information [Line Items]
Total assets	175,286
Industrial operations
Segment Reporting Information [Line Items]
Total assets	$ 52,316