Commitments and Contingencies - Manufacturing Agreements (Details) € in Millions, SFr in Millions, $ in Millions	1 Months Ended
	Jul. 31, 2016 USD ($)	Jul. 31, 2016 EUR (€)	Jun. 30, 2016 CHF (SFr)	Jun. 30, 2016 USD ($)
Ypsomed Supply Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Services agreement, term			3 years	3 years
Services agreement, renewal term			2 years	2 years
Service agreement, period required for notice of non-renewal			18 months	18 months
Annual minimum batches			SFr 0.5	$ 0.5
Total minimum payments inclusive of milestone payments and one-time capacity fee			SFr 2.9	$ 2.9
Vetter Supply Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Services agreement, term			5 years	5 years
Services agreement, renewal term			2 years	2 years
Service agreement, period required for notice of non-renewal			2 years	2 years
Lonza Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Services agreement, term	6 years	6 years
Services agreement, renewal term	3 years	3 years
Service agreement, period required for notice of non-renewal	24 months	24 months
Annual minimum batches	$ 3.4	€ 2.9
Total minimum payments inclusive of milestone payments and one-time capacity fee	$ 18.8	€ 16.1