EQUITY SECURITIES - Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Results of Operations
Pre-tax loss	$ (76,460)	$ (39,648)	$ (171,517)	$ (17,757)
Net loss	$ (63,049)	$ (36,995)	(146,849)	(19,725)
tZero.com, Inc.
Results of Operations
Revenues			1,373	2,070
Pre-tax loss			(15,681)	(23,151)
Net loss			$ (15,882)	$ (22,913)