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Accrued Expenses (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016
Payables and Accruals [Abstract] |  |
Schedule of accrued expenses | Accrued expenses consist of the following:
(in thousands) |  | September 30, 2017 |  |  | December 31, 2016 |
Clinical trial expenses |  | $ | 1,410 |  |  | $ | 1,365 |
Compensation, excluding taxes |  |  | 1,132 |  |  |  | 933 |
Professional fees |  |  | 448 |  |  |  | 286 |
Short-term portion of lease restructuring |  |  | 221 |  |  |  | 216 |
Other1 |  |  | 544 |  |  |  | 607 |
Total accrued expenses |  | $ | 3,755 |  |  | $ | 3,407 |
1 | Other consists of various accrued expenses, with no individual item accounting for more than 5% of current liabilities at September 30, 2017 and December 31, 2016.
| Current accrued expenses include the following:
|  | December 31, |  |  | December 31, |
(in thousands) |  | 2016 |  |  | 2015 |
Clinical trial expenses |  | $ | 1,365 |  |  | $ | 692 |
Compensation, excluding taxes |  |  | 933 |  |  |  | 391 |
Professional fees |  |  | 286 |  |  |  | 220 |
Short-term portion of lease restructuring |  |  | 216 |  |  |  | 219 |
Other |  |  | 607 |  |  |  | 721 |
Total accrued expenses |  | $ | 3,407 |  |  | $ | 2,243 |

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