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Certain Balance Sheet Accounts - Accrued Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accrued expenses |  |
Employee compensation | $ 6,665 | $ 3,706
Clinical trials | 5,536 | 2,430
Interest payable | 5,172 | 5,172
Income taxes payable | 4,871 | 338
Consulting and professional fees | 4,425 | 7,455
Contract research and development | 3,209 | 3,916
Sales rebates, fees and discounts |  | 8,442
Other accrued expenses | 673 | 1,675
Total accrued expenses | $ 30,551 | $ 33,134

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