Investment in Unconsolidated Entity - Summary of Condensed Financial Information Related to Unconsolidated Entity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Liabilities and equity:
Equity in loss of unconsolidated entity	$ 0	$ (932)
Limagrain Cereal Seeds LLC [Member]
Assets:
Current assets	2,104	1,614
Non-current assets	9,864	10,368
Total assets	11,968	11,982
Liabilities and equity:
Current liabilities	20,807	15,080
Total liabilities and equity	11,968	11,982
Revenue	3,630	2,671
Gross profit	1,328	1,696
Loss from continuing operations	(5,509)	(5,301)
Net loss	(5,741)	(5,499)
Equity in loss of unconsolidated entity		(932)
Limagrain Cereal Seeds LLC [Member] | Arcadia Biosciences, Inc [Member]
Liabilities and equity:
Equity	(3,002)	(993)
Limagrain Cereal Seeds LLC [Member] | Vilmorin USA [Member]
Liabilities and equity:
Equity	$ (5,837)	$ (2,105)