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Accrued Expenses | 12 Months Ended
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Dec. 31, 2021
Payables and Accruals [Abstract] |
Accrued Expenses | 6. Accrued Expenses Accrued expenses consist of the following (in thousands):
|  | As of December 31, |
|  | 2021 |  |  | 2020 |
Payroll and employee-related costs |  | $ | 23,661 |  |  | $ | 22,402 |
Research costs |  |  | 47,986 |  |  |  | 21,684 |
Licensing fees |  |  | 138 |  |  |  | 1,401 |
Professional fees |  |  | 4,720 |  |  |  | 1,670 |
Intellectual property costs |  |  | 6,120 |  |  |  | 3,625 |
Accrued property and equipment |  |  | 7,113 |  |  |  | 2,835 |
Other |  |  | 1,265 |  |  |  | 165 |
Total |  | $ | 91,003 |  |  | $ | 53,782 |

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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