Derivatives (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Derivative [Line Items]
Due to brokers	[1]	$ 1,325		$ 1,325		$ 201
Corporate, Non-Segment
Derivative [Line Items]
Notional amount, long		62,686		62,686		49,858
Derivative assets, fair value		105		105		28
Derivative liabilities, fair value		2,359		2,359		2,893
Derivative, gains (losses) on derivative, net		(6,580)	$ 2,895	(6,120)	$ 3,418
Forward contracts - foreign exchange
Derivative [Line Items]
Notional amount, long		15,849		15,849		9,641
Derivative assets, fair value		18		18		0
Derivative liabilities, fair value		746		746		405
Derivative, gains (losses) on derivative, net		(983)	673	(323)	1,873
Total Return Swap
Derivative [Line Items]
Notional amount, long		46,837		46,837		40,217
Derivative assets, fair value		87		87		28
Derivative liabilities, fair value		1,613		1,613		2,488
Derivative, gains (losses) on derivative, net		(5,597)	$ 2,222	(5,797)	$ 1,545
Cash | Asset Pledged as Collateral
Derivative [Line Items]
Trading investments and pledged as collateral		$ 1,500		$ 1,500		$ 4,500

[1] Amounts in parentheses represent the aggregate balances at September 30, 2024 and December 31, 2023 attributable to variable interest entities consolidated by the Company.