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13. Income Tax (Tables) | 12 Months Ended
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Dec. 31, 2017
Income Tax Disclosure [Abstract] |
U.S. loss and foreign loss before income taxes |
|  | Year Ended December 31, |
|  | 2017 |  |  | 2016 |
United States |  |  | (30,687 | ) |  |  | (16,318 | )
Foreign |  |  | (1,077 | ) |  |  | 688 |
Pretax Income |  |  | (31,764 | ) |  |  | (15,630 | )
Effective tax rate |
|  | Year Ended December 31, |
|  | 2017 |  |  | 2016 |
Income tax expense (benefit) at the federal statutory rate |  |  | (10,799 | ) |  |  | (5,314 | )
Tax Rate Re-measurement - 2017 Tax Cut |  |  | 19,600 |  |  |  | - |
State tax expense (benefit) |  |  | (1,689 | ) |  |  | (775 | )
Foreign tax differential |  |  | 1,154 |  |  |  | (401 | )
Stock-based compensation |  |  | 299 |  |  |  | 152 |
Interest expense |  |  | 33 |  |  |  | 26 |
Other |  |  | (24 | ) |  |  | 127 |
Credits |  |  | (24 | ) |  |  | (24 | )
Valuation allowance |  |  | (8,544 | ) |  |  | 6,215 |
Income Tax Expense |  |  | 6 |  |  |  | 6 |
Effective Tax Rate |  |  | -0.02 | % |  |  | -0.04 | %
Components of the net deferred tax asset or (liability) |
|  | Year Ended December 31, |
|  | 2017 |  |  | 2016 |
Org, Start-up and Intangible Assets |  |  | 5,045 |  |  |  | 7,435 |
Stock Based Comp |  |  | 223 |  |  |  | 185 |
Prop., Plant, and Equip. |  |  | (14,551 | ) |  |  | (21,639 | )
NOLs and R&D Credits |  |  | 53,874 |  |  |  | 66,698 |
Convertible Debt |  |  | - |  |  |  | (5 | )
Ethanol Credits |  |  | 1,500 |  |  |  | 1,500 |
Debt Extinguishment |  |  | 91 |  |  |  | 612 |
Other, net |  |  | 545 |  |  |  | 620 |
Subtotal |  |  | 46,727 |  |  |  | 55,406 |
Valuation Allowance |  |  | (46,727 | ) |  |  | (55,406 | )
Deferred tax assets (liabilities) |  |  | - |  |  |  | - |
Open tax years, by major tax jurisdiction |
United States — Federal |  | 2007 – present |
United States — State |  | 2008– present |
India |  | 2010 – present |
Mauritius |  | 2010 – present |

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