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Consolidated Joint Venture - Additional Information (Detail)		12 Months Ended
	Aug. 09, 2019 Individual	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Schedule Of Equity Method Investments [Line Items]
Net loss attributable to noncontrolling interest		$ 1,371,000	$ 68,000
Arcadia Biosciences, Inc [Member] | Archipelago Ventures Hawaii, LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Number of individuals appointed | Individual	2
Joint venture interest percentage		50.75%
Capital contributions		$ 2,336,000
Legacy Ventures Hawaii, LLC [Member] | Archipelago Ventures Hawaii, LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Number of individuals appointed | Individual	2
Joint venture interest percentage		49.25%
Capital contributions		$ 2,267,000

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