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Accounts payable and accrued expenses | 9 Months Ended
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Sep. 30, 2021
Payables and Accruals [Abstract] |
Accounts payable and accrued expenses | 5. Accounts payable and accrued expenses Accounts payable and accrued expenses at September 30, 2021 and December 31, 2020 consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31, | ​
​ |  | 2021 |  | 2020 | ​
Employee compensation, benefits, and related accruals | ​ | $ | 39,367 | ​ | $ | 53,291 | ​
Income tax payable | ​ | ​ | — | ​ | ​ | 4,315 | ​
Consulting and contracted research | ​ |  | 22,553 | ​ |  | 18,250 | ​
Professional fees | ​ |  | 5,174 | ​ |  | 3,614 | ​
Sales allowance | ​ |  | 60,980 | ​ |  | 54,327 | ​
Sales rebates | ​ |  | 67,056 | ​ |  | 63,774 | ​
Royalties | ​ | ​ | 27,928 | ​ | ​ | 16,575 | ​
Accounts payable | ​ |  | 21,462 | ​ |  | 18,665 | ​
Other | ​ |  | 7,809 | ​ |  | 9,357 | ​
Total | ​ | $ | 252,329 | ​ | $ | 242,168 | ​
​

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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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