Quarterly report pursuant to Section 13 or 15(d)

3. Inventories (Tables)

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3. Inventories (Tables)
 3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventories
    March 31, 2017     December 31, 2016  
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