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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) | The loss before income taxes is as follows (in thousands):
| As of December 31,
| 2018 |  | 2017
U.S. | $ | (17,179 | ) |  | $ | 265 |
Non - U.S. | (11,869 | ) |  | (23,766 | )
| $ | (29,048 | ) |  | $ | (23,501 | )
Schedule of Components of Income Tax Expense (Benefit) | The components of federal and state income tax expense are as follows (in thousands):
| As of December 31,
| 2018 |  | 2017
Current |  |  |
Federal | $ | (106 | ) |  | $ | 76 |
State | 45 |  |  | 138 |
Foreign | — |  |  | — |
Total current | (61 | ) |  | 214 |
Deferred expense |  |  |
Federal | (747 | ) |  | — |
State | (570 | ) |  | 39 |
Foreign | — |  |  | — |
Total deferred | (1,317 | ) |  | 39 |
Total income tax expense | $ | (1,378 | ) |  | $ | 253 |
Schedule of Deferred Tax Assets and Liabilities | The components of net deferred tax assets and liabilities are as follows (in thousands):
| As of December 31,
| 2018 |  | 2017
Net operating loss carryforwards | $ | 4,464 |  |  | $ | 1,028 |
Tax credit carryforwards | 134 |  |  | 345 |
Stock-based compensation | 2,223 |  |  | 2,550 |
Licensing deduction deferral | 5,961 |  |  | 2,105 |
Other | 56 |  |  | 395 |
Gross deferred tax assets | 12,838 |  |  | 6,423 |
Valuation allowance | (11,410 | ) |  | (4,658 | )
Net deferred tax asset | $ | 1,428 |  |  | $ | 1,765 |
The components of net deferred tax liabilities are as follows (in thousands):
| As of December 31,
| 2018 |  | 2017
In-process research and development not subject to future amortization for tax purposes | $ | 1,785 |  |  | $ | 3,438 |
Gross deferred tax liability | $ | 1,785 |  |  | $ | 3,438 |
The net deferred tax liabilities are as follows (in thousands):
| As of December 31,
| 2018 |  | 2017
Net deferred tax asset | $ | 1,428 |  |  | $ | 1,765 |
Gross deferred tax liability | 1,785 |  |  | 3,438 |
Net deferred tax liability | $ | 357 |  |  | $ | 1,673 |
Schedule of Effective Income Tax Rate Reconciliation | The provision for income taxes differs from the provision computed by applying the federal statutory rate to net loss before income taxes as follows:
| As of December 31,
| 2018 |  | 2017
U.S. federal statutory income tax rate | (21.0 | )% |  | (34.0 | )%
State and local taxes, net of federal benefit | (1.0 | )% |  | 0.4 | %
Foreign rate differential | 8.6 | % |  | 34.4 | %
Permanent differences | (1.5 | )% |  | 1.1 | %
Tax rate change and true-up | (13.9 | )% |  | 0.3 | %
Other | 0.1 | % |  | 0.2 | %
Valuation allowance | 23.5 | % |  | 0.1 | %
Tax credits | 0.5 | % |  | (1.4 | )%
Effective income tax rate | (4.7 | )% |  | 1.1 | %

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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