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Related party disclosures - Trading Balances (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Trading balances    
Amounts owed from related party $ 1 $ 2
Amounts owed to related party 229 288
Beneficial Owner | Immunocare    
Trading balances    
Amounts owed from related party 1 2
Amounts owed to related party $ 229 $ 288