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Accrued Expenses (Tables) | 9 Months Ended
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Sep. 30, 2021
Accrued Expenses |
Schedule of accrued expenses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Costs as of | ​
​ | ​ | September 30, | ​ | December 31, | ​
​ |  | 2021 |  | 2020 | ​
Employee compensation, benefits, and related accruals | ​ | $ | 679 | ​ | $ | 732 | ​
Research and development costs | ​ |  | 44 | ​ |  | 143 | ​
Professional fees | ​ |  | — | ​ |  | 119 | ​
Other accrued | ​ |  | 17 | ​ |  | — | ​
Total | ​ | $ | 740 | ​ | $ | 994 | ​

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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