Borrowings - Prime Brokerage Credit Facilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Short-term Debt [Line Items]
Weighted Average Interest Rate		3.80%
Total principal of long-term borrowings	$ 1,751,816	$ 1,826,693
Interest expense	$ 99,294	$ 92,035	$ 79,969
Short-Term Credit Facilities
Short-term Debt [Line Items]
Weighted Average Interest Rate	7.96%	7.42%
Financing Available	$ 599,180	$ 591,000
Total principal of long-term borrowings	175,256	212,912
Interest expense	$ 13,100	$ 9,300	$ 4,600