Annual report pursuant to Section 13 and 15(d)

Revenue - ASKA Pharmaceutical Co. Ltd. (Details)

v3.8.0.1
Revenue - ASKA Pharmaceutical Co. Ltd. (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 27, 2017
Dec. 31, 2017
Dec. 31, 2016
Deferred Revenue Arrangement [Line Items]      
Milestone payments   $ 12,573 $ 1,655
ASKA Pharmaceutical Co. Ltd.      
Deferred Revenue Arrangement [Line Items]      
Evaluation period 60 days    
Deferred revenue   3,100  
ASKA Pharmaceutical Co. Ltd. | Upfront Payment      
Deferred Revenue Arrangement [Line Items]      
Upfront option payment $ 2,750    
ASKA Pharmaceutical Co. Ltd. | Strategic Partnerships and Other License Agreements      
Deferred Revenue Arrangement [Line Items]      
Agreement termination notice period upon breach of payment obligations by the Company 30 days    
Milestone payments   $ 0 $ 0