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Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($)				3 Months Ended						9 Months Ended		12 Months Ended
	Apr. 30, 2025	Mar. 28, 2025	May 14, 2024	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Dec. 04, 2024	May 16, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Place of incorporation										Arizona
Year of incorporation										2002
Place of reincorporation										Delaware
Date of reincorporation										2015-03
Accumulated deficit				$ (279,881,000)						$ (279,881,000)		$ (278,878,000)
Cash and cash equivalents				1,120,000						1,120,000		4,242,000
Net losses				856,000	$ (4,458,000)	$ 2,599,000	$ (1,612,000)	$ 1,061,000	$ (2,423,000)	(1,003,000)	$ (2,974,000)	(7,000,000)
Net cash used in operations										3,878,000	7,418,000	$ 9,600,000
Gain from sale of patent portfolio		$ 750,000		$ 0			$ 0			$ 750,000	$ 4,000,000
Exchange agreement termination date	Aug. 15, 2025									May 15, 2025
GoodWheat [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Loss on sale of brand								1,500,000
Discontinued Operations [Member] | GoodWheat [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Sale of net consideration														$ 3,700,000
Loss on sale of brand								$ 1,500
Collaborative Arrangements [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Proceed from sale of patent portfolio			$ 4,000,000
Gain from sale of patent portfolio										$ 4,000,000
Limited Partners [Member] | Archipelago Ventures Hawaii, LLC [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Joint venture interest percentage	90.00%												90.00%
Bioceres Crop Solutions [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Contingent liability					$ 1,000,000
Proceed from sale of patent portfolio		$ 750,000								$ 750,000
Arcadia Biosciences, Inc [Member] | Archipelago Ventures Hawaii, LLC [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Joint venture interest percentage													10.00%

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