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Accrued Expenses | 9 Months Ended
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Sep. 30, 2023
Accrued Expenses |
Accrued Expenses | 5.Accrued Expenses Accrued expenses consisted of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2023 |  | 2022
Accrued contracted costs | ​ | $ | 2,863 | ​ | $ | 2,822
Accrued compensation | ​ | ​ | 2,671 | ​ | ​ | 3,373
Accrued professional fees | ​ | ​ | 1,891 | ​ | ​ | 588
Accrued other | ​ | ​ | 331 | ​ | ​ | 407
Accrued milestones | ​ | ​ | — | ​ | ​ | 500
Total | ​ | $ | 7,756 | ​ | $ | 7,690
​

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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