Income Taxes - Summary of Significant Components of Deferred Tax Assets (Detail) - USD ($) |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Acquired technology | $ 276,000 | $ 317,000 |
| Stock compensation expense | 430,000 | 223,000 |
| Accruals and other | 124,000 | 105,000 |
| Total deferred tax assets | 830,000 | 645,000 |
| Less valuation allowance | $ (830,000) | $ (645,000) |