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Accrued Liabilities | 3 Months Ended
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Mar. 31, 2019
Payables And Accruals [Abstract] |
Accrued Liabilities | 5. Accrued Liabilities Accrued liabilities consist of the following:
|  | March 31, 2019 |  |  | December 31, 2018 |
|  | (In thousands) |
Accrued payroll and related expenses |  | $ | 557 |  |  | $ | 1,189 |
Accrued research and development expenses |  |  | 524 |  |  |  | 1,028 |
Other |  |  | 164 |  |  |  | 510 |
Total accrued liabilities |  | $ | 1,245 |  |  | $ | 2,727 |

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- Definition The entire disclosure for accounts payable, accrued expenses, and other liabilities that are classified as current at the end of the reporting period. + References No definition available. + Details
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