DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule Of Concentration Of Credit Risk (Details) - Customer Concentration Risk - Revenue Benchmark	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Citadel Securities, LLC
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%	16.00%	22.00%
Entities affiliated with Wolverine Holdings, L.P.
Concentration Risk [Line Items]
Concentration risk, percentage	6.00%	8.00%	10.00%
Entities affiliated with Susquehanna International Group, LLP
Concentration Risk [Line Items]
Concentration risk, percentage	2.00%	8.00%	12.00%
Tai Mo Shan Limited
Concentration Risk [Line Items]
Concentration risk, percentage	1.00%	3.00%	15.00%
All others individually less than 10%
Concentration Risk [Line Items]
Concentration risk, percentage	19.00%	24.00%	18.00%
Total as percentage of total revenue
Concentration Risk [Line Items]
Concentration risk, percentage	40.00%	59.00%	77.00%