Quarterly report pursuant to Section 13 or 15(d)

Inventories - Schedule of Inventories (Details)

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Inventories - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Finished goods $ 34,278 $ 31,153
LCFS credits 16,856 6,957
Raw materials 8,136 9,891
Work in progress 8,338 11,121
Other 1,654 1,698
Total $ 69,262 $ 60,820