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Supplemental Information - Summary of Components of Revenue (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Revenue	$ 23,851	$ 7,296	$ 236
Soybean Oil [Member]
Disaggregation Of Revenue [Line Items]
Revenue	2,220	1,685
Soybean Meal [Member]
Disaggregation Of Revenue [Line Items]
Revenue	8,628	5,604
Soybean Grain [Member]
Disaggregation Of Revenue [Line Items]
Revenue	12,976
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 27	$ 7	$ 236

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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