Derivatives - Summary of Gains and (Losses) on Derivative Contracts (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	$ 3,476	$ 3,072	$ 7,429	$ 4,859
FX/commodities options
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	78	143	164	198
FX swaps
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	140	89	138	325
Futures
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	3,321	2,724	7,155	5,488
Forwards
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	$ (63)	$ 116	$ (28)	$ (1,152)