Business (Details)	Dec. 31, 2016 trial
Phase 3 Clinical Trials Failure to Meet Primary Endpoint
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of trials completed	2
Phase 3 Clinical Trial
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of trials completed	3

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration