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Consolidated Financial Statements Detail - Accrued and Other Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Accrued and other liabilities [Abstract] |  |
Accrued payroll and other benefits | $ 141 | $ 1,582
Accrued clinical trial costs |  | 458
Accrued incentive compensation | 229 |
Accrued legal and accounting fees | 431 | 385
Deferred rent | 765 | 707
Liability related to sublease | 800 |
Other | 179 | 1,083
Total | $ 2,545 | $ 4,215

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