Commitments and Contingencies - Additional Information (Detail) $ in Millions	1 Months Ended		12 Months Ended
	Feb. 28, 2017 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) ft² property	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Other Commitments [Line Items]
Rent expense			$ 3.8	$ 10.6	$ 10.5
Solazyme Roquette Joint Venture
Other Commitments [Line Items]
Legal fees		$ 2.3
Solazyme Roquette Joint Venture | Roquette Arbitration | Subsequent Event
Other Commitments [Line Items]
Proceeds from settlement	$ 2.4
California Office Buildings
Other Commitments [Line Items]
Area of real estate property (in sqft) | ft²			106,000
Number of buildings leased | property			2
Lease expiration date			Jan. 31, 2018
Amount of outstanding letters of credit		$ 0.7	$ 0.7	$ 0.7
Lease incentive receivable			$ 1.6