Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Derivative [Line Items]
Notional Amount, long	$ 12,575		$ 14,394
Notional Amount, Short	29,050		24,319
Derivative Assets, Fair Value	811		644
Derivative Liabilities, Fair Value	1,920		556
Derivative, Gains (Losses) on derivative, net	137	$ 347
Foreign exchange contracts
Derivative [Line Items]
Notional Amount, long	0		0
Notional Amount, Short	18,339		10,787
Derivative Assets, Fair Value	229		74
Derivative Liabilities, Fair Value	102		44
Derivative, Gains (Losses) on derivative, net	97	192
Commodity futures contracts
Derivative [Line Items]
Notional Amount, long	12,575		14,394
Notional Amount, Short	3,711		4,623
Derivative Assets, Fair Value	582		570
Derivative Liabilities, Fair Value	1,769		339
Derivative, Gains (Losses) on derivative, net	(2,101)	896
Commodity swap contracts
Derivative [Line Items]
Notional Amount, long	0		0
Notional Amount, Short	7,000		8,909
Derivative Assets, Fair Value	0		0
Derivative Liabilities, Fair Value	49		173
Derivative, Gains (Losses) on derivative, net	2,141	$ (741)
Investments
Derivative [Line Items]
Trading investments and pledged as collateral	$ 3,190		$ 1,713

Nominal or face amount used to calculate payments on the derivative asset.

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

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Nominal or face amount used to calculate payments on the derivative liability.

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