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Income Taxes (Details 1) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Deferred tax assets: |  |
Stock issued for services | $ 922 | $ 585
Accrued compensation | 105 | 0
Stock issued for acquisition of program | 1,787 | 949
Stock issued for license agreement | 2,308 | 2,507
Net operating loss carry-forward | 37,852 | 24,657
Total gross deferred tax assets | 42,974 | 28,698
Less: valuation allowance | (42,974) | (28,698)
Total net deferred tax assets | $ 0 | $ 0

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