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