Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Current: | ||
| Accrued expenses | $ 882 | $ 754 |
| Valuation allowance | (642) | (552) |
| Total current deferred tax asset | 240 | 202 |
| Long-term: | ||
| Stock-based compensation | 854 | 360 |
| Future benefit of carry forward losses | 17,946 | 9,961 |
| Other accruals | 488 | 160 |
| Valuation allowance | (14,229) | (7,740) |
| Total long-term deferred tax asset | 5,059 | 2,741 |
| Current: | ||
| Other accruals | (20) | (19) |
| Total current deferred tax liability | (20) | (19) |
| Long-term: | ||
| Amortization | (3,688) | (2,090) |
| Depreciation | (1,591) | (814) |
| Other accruals | 0 | (20) |
| Total long-term deferred tax liability | (5,279) | (2,924) |
| Net deferred tax assets (liabilities) | $ 0 | $ 0 |