Co-Promotion Arrangement With Eagle Pharmaceuticals (Details) - Collaborative Arrangement, Co-promotion [Member] $ in Millions		3 Months Ended	6 Months Ended	12 Months Ended
	Nov. 04, 2015 USD ($) product	Mar. 31, 2016 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of products | product	6
Term of contract	18 months
Fixed payment	$ 12.8
Milestone net sales achievement		$ 1.9
Reimbursable expense		$ 1.3
Extension term	6 months
Termination notice	60 days
Maximum [Member] | Scenario, Forecast [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Milestone net sales achievement			$ 4.0	$ 5.0