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Licensing and Other Arrangements - Takeda (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 16, 2020 | Feb. 28, 2009 | Nov. 30, 2006 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Licensing and other arrangements |  |  |  |  |  |  |  |
Revenue from contracts with customers |  |  |  | $ 525 | $ 53 | $ 544 | $ 553 |
Takeda | Collaboration agreement |  |  |  |  |  |  |  |
Licensing and other arrangements |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ 2,000 |  |  | 0 | $ 0 | 0 | $ 0 |
Contract assets |  |  |  | 0 |  | 0 |  | $ 0
Capitalized contract costs |  |  |  | $ 0 |  | $ 0 |  | $ 0
Takeda | Collaboration agreement | TAK-079 |  |  |  |  |  |  |  |
Licensing and other arrangements |  |  |  |  |  |  |  |
Maximum eligible milestone payments receivable upon achievement of development, regulatory and commercial milestones |  |  | $ 19,000 |  |  |  |  |
Royalty payment period from the first commercial sale of each royalty-bearing discovery product |  |  | 13 years 6 months |  |  |  |  |
Royalty payment period from first commercial sale if there is significant generic competition post patent-expiration |  |  | 12 years |  |  |  |  |
Takeda | Collaboration agreement | Other antibodies |  |  |  |  |  |  |  |
Licensing and other arrangements |  |  |  |  |  |  |  |
Maximum eligible milestone payments receivable per discovery product candidate |  | $ 3,300 |  |  |  |  |  |
Royalty payment period |  | 10 years |  |  |  |  |  |

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