Derivatives - Summary of Gains and (Losses) on Derivative Contracts (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	$ 3,953	$ 1,787
FX/Commodities Options [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	86	55
FX Swaps [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	(2)	236
Futures [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	3,834	2,764
Forwards [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (loss), net on derivative contract	$ 35	$ (1,268)