Geographic information - Major Customers (Details) - customer |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Major Customers | |||
| Number of customers | 1 | 1 | 1 |
| Revenues | Customer Concentration Risk | GlaxoSmithKline Intellectual Property Development Ltd | |||
| Major Customers | |||
| Concentration risk (as a percentage) | 100.00% | 100.00% | 100.00% |
| X | ||||||||||
- Definition Number of customers. No definition available.
|
| X | ||||||||||
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|