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Acquisitions, Investments and Licenses - Summary of Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Business Combinations [Abstract]    
Equity method investments, investment carrying value $ 27,429  
Equity method investment, underlying equity in net assets 16,254  
Variable interest entity, equity method 620  
Available for sale investments 5,312  
Warrants and options 888  
Total carrying value of investments $ 34,249 $ 34,716