Derivative Financial Instruments (Schedule of Derivatives Instruments Statements of Financial Position) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Designated as hedging instrument
Amount of gain (loss) recognized in income on related hedged items	$ 4,408	$ (561)	$ (781)
Designated as hedging instrument | Commodity contract | Futures | Cost of goods sold
Amount of gain (loss) recognized in income on derivatives	(1,369)	(2,004)	(801)
Designated as hedging instrument | Commodity contract | Firm commitments | Futures | Cost of goods sold
Amount of gain (loss) recognized in income on related hedged items	3,354	(79)	(1,613)
Designated as hedging instrument | Commodity contract | Inventory | Futures | Cost of goods sold
Amount of gain (loss) recognized in income on related hedged items	1,054	(482)	832
Not designated as hedging instrument | Commodity contract | Futures | Cost of goods sold
Amount of gain (loss) recognized in income on derivatives	$ (33,517)	$ (17,368)	$ 704