Organization, Presentation, and Nature of the Business - (Details) gal in Millions	12 Months Ended
	Dec. 31, 2017 facility gal	Mar. 15, 2016 gal
Class of Stock [Line Items]
Number of biorefineries	14
Number of operating biodiesel production facilities	13
Production capacity per year | gal	520
Number of fermentation facilities	1
Number of feedstock processing facilities	1
Number of multi-feedstock capable plants	10
Number of non-operating biodiesel production facilities	1
Construction in Progress
Class of Stock [Line Items]
Number of operating biodiesel production facilities	3
Sanimax
Class of Stock [Line Items]
Production capacity per year | gal	20	20
North America
Class of Stock [Line Items]
Number of biorefineries	12
Europe
Class of Stock [Line Items]
Number of biorefineries	2