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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Income Before Income Taxes | Income before income taxes consists of:
|  | Year Ended December 31, |
(in thousands) |  | 2016 |  |  | 2015 |
Domestic |  | $ | (13,930 | ) |  | $ | (11,276 | )
Foreign |  |  | (4,040 | ) |  |  | (3,428 | )
Income before taxes |  | $ | (17,970 | ) |  | $ | (14,704 | )
Income tax reconciliation | The provision for income taxes differs from the amount computed by applying the statutory rate as follows:
|  | Year Ended December 31, |
(in thousands) |  | 2016 |  |  | 2015 |
Income taxes using U.S federal statutory rate |  | $ | (6,110 | ) |  | $ | (4,999 | )
Loss of tax benefit of net operating loss carryforwards |  |  | 68,795 |  |  |  | — |
Loss of tax benefit of state net operating loss carryforwards |  |  | 13,891 |  |  |  | — |
Loss of tax benefit of tax credit carryforwards |  |  | 4,023 |  |  |  | — |
Amortization of gain on IP migration |  |  | 767 |  |  |  | 767 |
State income taxes, net of federal benefit |  |  | (2,576 | ) |  |  | 380 |
Foreign rate differential |  |  | 1,141 |  |  |  | 920 |
Valuation allowance |  |  | (75,407 | ) |  |  | 2,649 |
Derivative charge |  |  | (4,345 | ) |  |  | (192 | )
Stock option exercises and cancellations |  |  | 53 |  |  |  | 674 |
Research and development costs |  |  | (250 | ) |  |  | (199 | )
Other |  |  | 18 |  |  |  | — |
|  | $ | — |  |  | $ | — |
Significant components of deferred tax assets | Significant components of the Company’s deferred tax assets are as follows:
(in thousands) |  | December 31, 2016 |  |  | December 31, 2015 |
Deferred tax assets: |  |  |  |  |  |  |  |
Employee compensation accruals |  | $ | 1,386 |  |  | $ | 1,279 |
Accrued liabilities |  |  | 343 |  |  |  | 633 |
Research tax credits |  |  | 22 |  |  |  | 3,796 |
Other |  |  | 55 |  |  |  | 66 |
Net operating losses |  |  | 6,194 |  |  |  | 77,906 |
Total deferred tax assets |  | $ | 8,000 |  |  | $ | 83,680 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Beneficial conversion feature |  |  | 906 |  |  |  | — |
Total deferred tax liabilities |  | $ | 906 |  |  | $ | — |
Valuation allowance |  |  | 7,094 |  |  |  | 83,680 |
Net deferred tax assets |  | $ | — |  |  | $ | — |
Summary of Change in Valuation Allowance | The change in valuation allowance is as follows:
(in thousands) |  | December 31, 2016 |  |  | December 31, 2015 |
Beginning balance |  | $ | 83,680 |  |  | $ | 81,223 |
Charged to costs and expenses |  |  | (75,407 | ) |  |  | 2,649 |
Charged to additional paid-in capital |  |  | (1,854 | ) |  |  | - |
Charged to retained earnings |  |  | 1,010 |  |  |  | - |
Charged to other comprehensive income |  |  | (335 | ) |  |  | (192 | )
Ending balance |  | $ | 7,094 |  |  | $ | 83,680 |

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