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Income Taxes (Details 3) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Deferred tax assets: |  |
Accruals | $ 126 | $ 1,109
Stock compensation | 1,466 | 1,352
Net operating losses | 20,015 | 17,190
Basis difference in fixed assets | 13 | 7
Total deferred tax assets | 21,620 | 19,658
Valuation allowance | (21,620) | (19,658)
Total net deferred tax assets |  |

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