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ACCRUED EXPENSES (Tables) | 12 Months Ended
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Dec. 31, 2021
Payables and Accruals [Abstract] |
Accrued Expenses | Accrued expenses consist of the following (in thousands):
|  | December 31, |
|  | 2021 |  |  | 2020 |
Compensation |  | $ | 27,686 |  |  | $ | 22,147 |
PPG agreements |  |  | 8,853 |  |  |  | 4,402 |
Research and development agreements |  |  | 1,469 |  |  |  | 627 |
Consulting |  |  | 1,314 |  |  |  | 771 |
Professional fees |  |  | 1,000 |  |  |  | 908 |
Royalties |  |  | 691 |  |  |  | 11,125 |
Other |  |  | 4,461 |  |  |  | 1,424 |
Accrued expenses |  | $ | 45,474 |  |  | $ | 41,404 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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