LEGAL PROCEEDINGS - General Civil Actions (Details)			1 Months Ended
	Jun. 30, 2017 USD ($)	Jul. 21, 2016 USD ($) member	Nov. 30, 2014 USD ($)	Nov. 02, 2016 USD ($)
Arbitration with Alfa Wasserman
Loss Contingencies [Line Items]
Development costs		$ 80,000,000
Damages sought		$ 285,000,000
Number of members on the arbitration tribunal | member		3
Mimetogen Litigation
Loss Contingencies [Line Items]
Damages sought			$ 20,000,000
Settlement, amount paid	$ 20,000,000
Sprout Pharmaceuticals, Inc. | Minimum
Loss Contingencies [Line Items]
Purchase obligation (no less than $200 million)				$ 200,000,000