Annual report pursuant to Section 13 and 15(d)

Geographic information - Major Customers (Details)

v3.8.0.1
Geographic information - Major Customers (Details) - customer
6 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Jun. 30, 2015
Major Customers        
Number of customers 1 1 1 1
Revenue. | Customer Concentration Risk | GlaxoSmithKline Intellectual Property Development Ltd        
Major Customers        
Concentration risk (as a percentage) 100.00% 100.00% 100.00% 100.00%