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Accounts payable and accrued expenses - (Tables) | 12 Months Ended
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Dec. 31, 2020
Payables and Accruals [Abstract] |
Schedule of components of accounts payable and accrued expenses | Accounts payable and accrued expenses at December 31, 2020 and 2019 consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ | ​ | 2020 |  | 2019
Employee compensation, benefits, and related accruals | ​ | $ | 53,291 | ​ | $ | 38,390
Income tax payable | ​ | ​ | 4,315 | ​ | ​ | 499
Consulting and contracted research | ​ |  | 18,250 | ​ |  | 12,969
Professional fees | ​ |  | 3,614 | ​ |  | 3,562
Sales allowance | ​ |  | 54,327 | ​ |  | 38,579
Sales rebates | ​ |  | 63,774 | ​ |  | 29,268
Royalties | ​ | ​ | 16,575 | ​ | ​ | 13,729
Accounts payable | ​ |  | 18,665 | ​ |  | 10,324
Other | ​ |  | 9,357 | ​ |  | 11,956
Total | ​ | $ | 242,168 | ​ | $ | 159,276

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- Definition Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses. + References No definition available. + Details
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