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Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Accrued Expenses and Other Current Liabilities |  |
Research and development costs | $ 13,529 | $ 11,379
Professional fees | 7,375 | 4,502
Payroll related | 10,039 | 11,444
Royalties | 1,125 | 440
Sales Allowances | 8,450 | 2,710
Other | 3,753 | 2,419
Accrued expenses and other current liabilities | $ 44,271 | $ 32,894

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