Derivatives - Summary of Gains and (Losses) on Derivative Contracts (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Principal transactions
Gain (loss), net on derivative contract	$ 19,442	$ 19,210	$ 11,266
FX/commodities options
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	230	331	225
FX swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	2,619	2,466	182
Interest rate swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	3,454	25	0
Futures
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	13,139	16,388	10,902
Forwards
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	$ 0	$ 0	$ (43)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

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