Related Party Transactions (Tables)  | 
3 Months Ended | |||||||||||||||||||
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Mar. 31, 2017  | ||||||||||||||||||||
| Related Party Transactions [Abstract] | ||||||||||||||||||||
| Summary of milestone payments | 
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| X | ||||||||||
- References No definition available. 
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| X | ||||||||||
- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. No definition available. 
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