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License Agreements (Tables) | 6 Months Ended
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Jun. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Schedule of Success Payment Liability | The following table summarizes the Company’s success payment liability for Harvard (in thousands):
|  | June 30, 2021 |  |  | December 31, 2020 |
Harvard success payment liability |  | $ | 42,600 |  |  | $ | 35,500 |
The following table summarizes the Company’s success payment liability for Broad Institute (in thousands):
|  | June 30, 2021 |  |  | December 31, 2020 |
Broad Institute success payment liability |  | $ | 42,800 |  |  | $ | 35,700 |
Schedule of Change in Fair Value of Success Payment Liability | The following table summarizes the expense resulting from the change in the fair value of the success payment liability for Harvard (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Change in fair value of Harvard success payment liability |  | $ | 21,100 |  |  | $ | 4,400 |  |  | $ | 22,100 |  |  | $ | 5,700 |
The following table summarizes the expense resulting from the change in the fair value of the success payment liability for Broad Institute (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Change in fair value of Broad Institute success payment liability |  | $ | 21,200 |  |  | $ | 4,300 |  |  | $ | 22,100 |  |  | $ | 5,700 |

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