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Acquisitions, Investments and Licenses - Variable Interest Entities Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended 12 Months Ended
Jul. 09, 2015
Jun. 30, 2016
Nov. 30, 2015
Jun. 30, 2012
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Variable Interest Entity [Line Items]              
Merger transaction gain         $ 2.5    
Zebra              
Variable Interest Entity [Line Items]              
Ownership percentage   29.00%     29.00%    
Additional investment     $ 1.0        
VBI Vaccines Inc              
Variable Interest Entity [Line Items]              
Ownership percentage   17.00%     17.00%    
Additional investment   $ 5.7          
Additional shares purchased   1,362,370          
Series A Preferred Stock | Zebra              
Variable Interest Entity [Line Items]              
Investment owned, shares   1,260,000     1,260,000    
Restricted Stock | Zebra              
Variable Interest Entity [Line Items]              
Shares received as a gift         900,000    
SciVac              
Variable Interest Entity [Line Items]              
Gain on deconsolidation of SciVac           $ 15.9  
SciVac | Variable Interest Entity, Primary Beneficiary              
Variable Interest Entity [Line Items]              
Stock ownership percentage       50.00%      
Additional working capital             $ 7.9
VBI Vaccines Inc.              
Variable Interest Entity [Line Items]              
Stock ownership percentage 24.50%            
Cash contribution $ 21.2