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Revenue - Narrative (Details) $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) milestone | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Feb. 29, 2020 USD ($) | Dec. 31, 2017 USD ($)
Disaggregation of Revenue [Line Items] |  |  |  |  |
Deferred revenue, upfront payment | $ 7,939 |  | $ 8,939 |  |
Current contract liability | 7,939 |  | 8,370 |  |
Non-current contract liability | $ 0 |  | 569 |  |
Licensing agreements | EuroFarma |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Deferred revenue, upfront payment |  |  |  |  | $ 2,500
Deferred revenue, enrollment milestone |  | $ 1,250 |  | $ 1,000 |
Number of enrollment milestones included in transaction price | milestone | 2 |  |  |  |
Current contract liability | $ 756 |  | 759 |  |
Non-current contract liability | 0 |  | $ 569 |  |
Revenue entitled to receive upon various development milestones | 1,500 |  |  |  |
Revenue entitled to receive upon achieving cumulative net sales targets | 21,400 |  |  |  |
Cumulative net sales target threshold | 100,000 |  |  |  |
Incremental cumulative net sales target threshold | $ 100,000 |  |  |  |

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