Investment in Unconsolidated Entity - Additional information (Detail) - Limagrain Cereal Seeds LLC [Member] - USD ($)	6 Months Ended	12 Months Ended
Jun. 30, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Loss on investments	$ 0	$ 0
Arcadia Biosciences, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Investment, ownership percentage	35.00%
Vilmorin Cie [Member]
Schedule of Equity Method Investments [Line Items]
Investment, remaining ownership percentage	65.00%
Vilmorin USA [Member]
Schedule of Equity Method Investments [Line Items]
Debt balance	$ 15,500,000
Maturity date of debt	Jul. 15, 2015
Extended maturity date of debt	Oct. 15, 2015

Debt instrument extended maturity date.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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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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