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Accrued Expenses (Tables) | 12 Months Ended
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Dec. 31, 2017
Accrued Expenses |
Schedule of components of accrued expenses | Accrued expenses consisted of the following (in thousands):
|  | December 31, |
|  | 2017 |  | 2016 |
Accrued compensation |  | $ | 632 |  | $ | 1,252 |
Accrued contracted research costs |  |  | 1,357 |  |  | 1,850 |
Accrued professional fees |  |  | 298 |  |  | 215 |
Accrued other |  |  | 145 |  |  | 360 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  | $ | 2,432 |  | $ | 3,677 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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