Quarterly report pursuant to Section 13 or 15(d)

3. Inventories - Schedule of Inventories (Details)

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3. Inventories - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Finished goods $ 32,559 $ 33,773
LCFS credits 10,143 10,926
Raw materials 6,380 6,571
Work in progress 7,255 7,092
Other 1,708 1,708
Total $ 58,045 $ 60,070