Summary of Significant Accounting Policies - Accounts receivable (Details) $ in Thousands |
Dec. 31, 2017
USD ($)
customer
|
Dec. 31, 2016
USD ($)
customer
|
|---|---|---|
| Accounts receivable | ||
| Allowance for doubtful accounts | $ | $ 0 | $ 0 |
| GlaxoSmithKline Intellectual Property Development Ltd | ||
| Accounts receivable | ||
| Number of customers | customer | 1 | 1 |
| X | ||||||||||
- Definition Represents the number of customers. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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