Commitments and Contingencies - Manufacturing Agreements (Details) SFr in Millions, $ in Millions				1 Months Ended
	Jun. 28, 2016	Jun. 23, 2016 USD ($)	Jun. 23, 2016 CHF (SFr)	Jul. 31, 2016
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Service agreement, period required for notice of non-renewal				24 months
Ypsomed
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Services agreement, term		3 years	3 years
Services agreement, renewal term		2 years	2 years
Services agreement, purchase period		3 years	3 years
Milestone payments and one-time capacity fee		$ 4.0	SFr 3.9
Vetter
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Services agreement, term	5 years
Services agreement, renewal term	2 years
Service agreement, period required for notice of non-renewal	2 years
Lonza
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Services agreement, term				6 years
Services agreement, renewal term				3 years