Fair Value of Financial Assets and Liabilities - Schedule of Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Net amounts of recognized assets
Net amounts presented in the statements of financial condition, assets	$ 2,428	$ 5,384
Net amounts of recognized Liabilities
Net amounts presented in the statements of financial condition, liabilities	1,608	4,430
Fair Value, Recurring
Net amounts of recognized assets
Financial instruments owned, at fair value—Domestic government debt	97,546	170,381
Financial instruments owned, at fair value—Foreign government debt	29,054	14,827
Financial instruments owned, at fair value—Equities	955	989
Financial instruments owned, at fair value—Corporate bonds	59
Netting and Collateral	(45,394)	(38,289)
Total	130,042	191,581
Net amounts of recognized Liabilities
Netting and Collateral	(45,394)	(38,289)
Contingent consideration	22,662	21,768
Total	24,270	26,198
FX swaps
Net amounts of recognized assets
Net amounts presented in the statements of financial condition, assets	1,773	4,810
Net amounts of recognized Liabilities
Net amounts presented in the statements of financial condition, liabilities	1,022	3,679
FX swaps | Fair Value, Recurring
Net amounts of recognized assets
Netting and Collateral	(651)	(1,183)
Net amounts presented in the statements of financial condition, assets	1,773	4,810
Net amounts of recognized Liabilities
Netting and Collateral	(651)	(1,183)
Net amounts presented in the statements of financial condition, liabilities	1,022	3,679
Forwards
Net amounts of recognized assets
Net amounts presented in the statements of financial condition, assets	655	409
Net amounts of recognized Liabilities
Net amounts presented in the statements of financial condition, liabilities	384	751
Forwards | Fair Value, Recurring
Net amounts of recognized assets
Netting and Collateral	(274)	(56)
Net amounts presented in the statements of financial condition, assets	655	409
Net amounts of recognized Liabilities
Netting and Collateral	(274)	(56)
Net amounts presented in the statements of financial condition, liabilities	384	751
Futures
Net amounts of recognized assets
Net amounts presented in the statements of financial condition, assets	0	165
Net amounts of recognized Liabilities
Net amounts presented in the statements of financial condition, liabilities	202	0
Futures | Fair Value, Recurring
Net amounts of recognized assets
Netting and Collateral	(44,469)	(36,918)
Net amounts presented in the statements of financial condition, assets	0	165
Net amounts of recognized Liabilities
Netting and Collateral	(44,469)	(36,918)
Net amounts presented in the statements of financial condition, liabilities	202	0
Interest rate swaps
Net amounts of recognized assets
Net amounts presented in the statements of financial condition, assets		0
Net amounts of recognized Liabilities
Net amounts presented in the statements of financial condition, liabilities		0
Interest rate swaps | Fair Value, Recurring
Net amounts of recognized assets
Netting and Collateral		(132)
Net amounts presented in the statements of financial condition, assets		0
Net amounts of recognized Liabilities
Netting and Collateral		(132)
Net amounts presented in the statements of financial condition, liabilities		0
Level 1 | Fair Value, Recurring
Net amounts of recognized assets
Financial instruments owned, at fair value—Domestic government debt	97,546	170,381
Financial instruments owned, at fair value—Foreign government debt	0	0
Financial instruments owned, at fair value—Equities	955	989
Financial instruments owned, at fair value—Corporate bonds	0
Total	142,970	208,453
Net amounts of recognized Liabilities
Contingent consideration	0	0
Total	44,671	36,918
Level 1 | FX swaps | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	0	0
Net amounts of recognized Liabilities
Derivative liability	0	0
Level 1 | Forwards | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	0	0
Net amounts of recognized Liabilities
Derivative liability	0	0
Level 1 | Futures | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	44,469	37,083
Net amounts of recognized Liabilities
Derivative liability	44,671	36,918
Level 1 | Interest rate swaps | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset		0
Net amounts of recognized Liabilities
Derivative liability		0
Level 2 | Fair Value, Recurring
Net amounts of recognized assets
Financial instruments owned, at fair value—Domestic government debt	0	0
Financial instruments owned, at fair value—Foreign government debt	29,054	14,827
Financial instruments owned, at fair value—Equities	0	0
Financial instruments owned, at fair value—Corporate bonds	59
Total	32,466	21,417
Net amounts of recognized Liabilities
Contingent consideration	0	0
Total	2,331	5,801
Level 2 | FX swaps | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	2,424	5,993
Net amounts of recognized Liabilities
Derivative liability	1,673	4,862
Level 2 | Forwards | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	929	465
Net amounts of recognized Liabilities
Derivative liability	658	807
Level 2 | Futures | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	0	0
Net amounts of recognized Liabilities
Derivative liability	0	0
Level 2 | Interest rate swaps | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset		132
Net amounts of recognized Liabilities
Derivative liability		132
Level 3
Net amounts of recognized Liabilities
Contingent consideration	22,662	21,768
Level 3 | Fair Value, Recurring
Net amounts of recognized assets
Financial instruments owned, at fair value—Domestic government debt	0	0
Financial instruments owned, at fair value—Foreign government debt	0	0
Financial instruments owned, at fair value—Equities	0	0
Financial instruments owned, at fair value—Corporate bonds	0
Total	0	0
Net amounts of recognized Liabilities
Contingent consideration	22,662	21,768
Total	22,662	21,768
Level 3 | FX swaps | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	0	0
Net amounts of recognized Liabilities
Derivative liability	0	0
Level 3 | Forwards | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	0	0
Net amounts of recognized Liabilities
Derivative liability	0	0
Level 3 | Futures | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset	0	0
Net amounts of recognized Liabilities
Derivative liability	$ 0	0
Level 3 | Interest rate swaps | Fair Value, Recurring
Net amounts of recognized assets
Derivative asset		0
Net amounts of recognized Liabilities
Derivative liability		$ 0