Related Party Transactions (Investment Balance in Company's Equity Method Investees) (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity Method Investments		$ 32,090	$ 26,461
Providence Grain
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity Method Investments	[1]	17,037	12,467
Equity method investment, aggregate unamortized difference		5,000
Quadra Commodities S.A.
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity Method Investments		7,959	7,013
Other
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity Method Investments		$ 7,094	$ 6,981

[1] At December 31, 2021, the aggregate unamortized basis difference of the Company's investment in Providence Grain Group Inc. of $5.0 million is primarily attributable to the difference between the amount for which the Company recorded other-than-temporary impairment charges and the historical carrying value of the net assets of the entity. This difference is being amortized over the remaining useful life of the related assets and included in the reported amount of income from unconsolidated entities.