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ACCRUED EXPENSES (Tables) | 12 Months Ended
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Dec. 31, 2019
Payables And Accruals [Abstract] |
Accrued Expenses | Accrued expenses consist of the following (in thousands):
|  | December 31, |
|  | 2019 |  |  | 2018 |
Compensation |  | $ | 30,295 |  |  | $ | 13,803 |
Royalties |  |  | 11,776 |  |  |  | 6,996 |
Research and development agreements |  |  | 3,052 |  |  |  | 3,572 |
Consulting |  |  | 471 |  |  |  | 527 |
Professional Fees |  |  | 268 |  |  |  | 655 |
Other |  |  | 3,160 |  |  |  | 10,504 |
Accrued Expenses |  | $ | 49,022 |  |  | $ | 36,057 |

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