| Schedule of Financial Date for Operating Segments | 
   
    |   | 
  | 
    Three Months Ended
     September 30, | 
  | 
  | 
    Nine Months Ended
     September 30, | 
  | 
 
    |   | 
  | 
    2016 | 
  | 
  | 
    2015 | 
  | 
  | 
    2016 | 
  | 
  | 
    2015 | 
  | 
 
    |   | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
 
    | Net Sales | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Ethanol Production: | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Net sales to external customers | 
  | 
    $ | 
266,299 | 
  | 
  | 
    $ | 
248,158 | 
  | 
  | 
    $ | 
767,171 | 
  | 
  | 
    $ | 
456,114 | 
  | 
 
    | Intersegment net sales | 
  | 
      | 
306 | 
  | 
  | 
      | 
251 | 
  | 
  | 
      | 
829 | 
  | 
  | 
      | 
336 | 
  | 
 
    | Total production segment net sales | 
  | 
      | 
266,605 | 
  | 
  | 
      | 
248,409 | 
  | 
  | 
      | 
768,000 | 
  | 
  | 
      | 
456,450 | 
  | 
 
    |   | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Marketing and distribution: | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Net sales to external customers | 
  | 
      | 
151,507 | 
  | 
  | 
      | 
132,464 | 
  | 
  | 
      | 
415,868 | 
  | 
  | 
      | 
358,304 | 
  | 
 
    | Intersegment net sales | 
  | 
      | 
2,018 | 
  | 
  | 
      | 
1,792 | 
  | 
  | 
      | 
5,861 | 
  | 
  | 
      | 
3,364 | 
  | 
 
    | Total marketing and distribution net sales | 
  | 
      | 
153,525 | 
  | 
  | 
      | 
134,256 | 
  | 
  | 
      | 
421,729 | 
  | 
  | 
      | 
361,668 | 
  | 
 
    | Intersegment eliminations | 
  | 
      | 
(2,324 | 
) | 
  | 
      | 
(2,043 | 
) | 
  | 
      | 
(6,690 | 
) | 
  | 
      | 
(3,699 | 
) | 
 
    | Net sales as reported | 
  | 
    $ | 
417,806 | 
  | 
  | 
    $ | 
380,622 | 
  | 
  | 
    $ | 
1,183,039 | 
  | 
  | 
    $ | 
814,419 | 
  | 
 
 
   
    | Cost of goods sold: | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
 
    | Ethanol production | 
  | 
    $ | 
262,964 | 
  | 
  | 
    $ | 
261,069 | 
  | 
  | 
    $ | 
759,210 | 
  | 
  | 
    $ | 
468,229 | 
  | 
 
    | Marketing and distribution | 
  | 
      | 
153,406 | 
  | 
  | 
      | 
130,756 | 
  | 
  | 
      | 
412,225 | 
  | 
  | 
      | 
357,337 | 
  | 
 
    | Intersegment eliminations | 
  | 
      | 
(4,928 | 
) | 
  | 
      | 
(3,823 | 
) | 
  | 
      | 
(13,533 | 
) | 
  | 
      | 
(9,034 | 
) | 
 
    | Cost of goods sold as reported | 
  | 
    $ | 
411,442 | 
  | 
  | 
    $ | 
388,002 | 
  | 
  | 
    $ | 
1,157,902 | 
  | 
  | 
    $ | 
816,532 | 
  | 
 
 
  
    |   | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
 
    | Loss before provision for income taxes: | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
 
    | Ethanol production | 
  | 
    $ | 
(2,903 | 
) | 
  | 
    $ | 
(22,154 | 
) | 
  | 
    $ | 
(19,171 | 
) | 
  | 
    $ | 
(26,352 | 
) | 
 
    | Marketing and distribution | 
  | 
      | 
(1,524 | 
) | 
  | 
      | 
1,970 | 
  | 
  | 
      | 
4,654 | 
  | 
  | 
      | 
(161 | 
) | 
 
    | Corporate activities | 
  | 
      | 
909 | 
  | 
  | 
      | 
1,596 | 
  | 
  | 
      | 
2,614 | 
  | 
  | 
      | 
2,298 | 
  | 
 
    |   | 
  | 
    $ | 
(3,518 | 
) | 
  | 
    $ | 
(18,588 | 
) | 
  | 
    $ | 
(11,903 | 
) | 
  | 
    $ | 
(24,215 | 
) | 
 
    | Depreciation and amortization: | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
    | Ethanol production | 
  | 
    $ | 
8,631 | 
  | 
  | 
    $ | 
8,195 | 
  | 
  | 
    $ | 
25,839 | 
  | 
  | 
    $ | 
14,585 | 
  | 
 
    | Marketing and distribution | 
  | 
      | 
– | 
  | 
  | 
      | 
5 | 
  | 
  | 
      | 
3 | 
  | 
  | 
      | 
147 | 
  | 
 
    | Corporate activities | 
  | 
      | 
226 | 
  | 
  | 
      | 
155 | 
  | 
  | 
      | 
684 | 
  | 
  | 
      | 
371 | 
  | 
 
    |   | 
  | 
    $ | 
8,857 | 
  | 
  | 
    $ | 
8,355 | 
  | 
  | 
    $ | 
26,526 | 
  | 
  | 
    $ | 
15,103 | 
  | 
 
 
  
    | Interest expense: | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
  | 
      | 
  | 
 
    | Ethanol production | 
  | 
    $ | 
3,521 | 
  | 
  | 
    $ | 
4,987 | 
  | 
  | 
    $ | 
15,600 | 
  | 
  | 
    $ | 
6,831 | 
  | 
 
    | Marketing and distribution | 
  | 
      | 
353 | 
  | 
  | 
      | 
180 | 
  | 
  | 
      | 
1,043 | 
  | 
  | 
      | 
356 | 
  | 
 
    | Corporate activities | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
  | 
      | 
– | 
  | 
 
    |   | 
  | 
    $ | 
3,874 | 
  | 
  | 
    $ | 
5,167 | 
  | 
  | 
    $ | 
16,643 | 
  | 
  | 
    $ | 
7,187 | 
  | 
 
 
   
 |