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BeiGene Exclusive Option and License Agreement - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Jan. 03, 2020
BeiGene Exclusive Option and License Agreement |  |  |
Up-front fee |  | $ 3,000 |
Contract acquisition costs | $ 270 | 270 |
Amortization expense | 34 | 101 |
Deferred Costs | 169 | 169 |
Exclusive Option and License Agreement |  |  |
BeiGene Exclusive Option and License Agreement |  |  |
Upfront cash payment | 3,000 | 3,000 | $ 3,000
Future option exercise and milestone payments, maximum |  |  | $ 132,000
License |  |  |
BeiGene Exclusive Option and License Agreement |  |  |
Revenue recognized | 375 | 1,125 |
Royalty |  |  |
BeiGene Exclusive Option and License Agreement |  |  |
Revenue recognized | $ 0 | $ 0 |

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