Quarterly report pursuant to Section 13 or 15(d)

Acquisitions, Investments and Licenses - Other Narrative (Details)

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Acquisitions, Investments and Licenses - Other Narrative (Details) - USD ($)
$ in Millions
1 Months Ended
Jan. 05, 2016
Mar. 31, 2016
Dec. 31, 2015
Related Party Transaction [Line Items]      
Stock received $ 5.0    
Stock transferred $ 5.0    
Stock transferred, shares 494,462    
Stock received, shares 10,204,082    
Common stock, shares   547,980,417 546,188,516
Relative Core      
Related Party Transaction [Line Items]      
Interest rate on notes payable   10.00%  
Relative Core      
Related Party Transaction [Line Items]      
Payment for promissory note   $ 5.0  
Promissory note receivable   $ 5.0  
Securities Pledged as Collateral      
Related Party Transaction [Line Items]      
Common stock, shares   494,462  
Securities Pledged as Collateral | Xenetic Biosciences, Inc.      
Related Party Transaction [Line Items]      
Common stock, shares   4,000,000