Quarterly report pursuant to Section 13 or 15(d)

Acquisitions, Investments and Licenses - Available for Sale Investments, Sale of Investments and Warrants and Options Narrative (Details)

v3.7.0.1
Acquisitions, Investments and Licenses - Available for Sale Investments, Sale of Investments and Warrants and Options Narrative (Details)
shares in Millions
Mar. 31, 2017
shares
Rxi Pharmaceuticals Corporation  
Investment [Line Items]  
Ownership percentage 2.00%
BioCardia, Inc.  
Investment [Line Items]  
Ownership percentage 5.00%
Number of shares into which warrants may be converted (in shares) 5.0
ChromaDex  
Investment [Line Items]  
Ownership percentage 2.00%
MabVax  
Investment [Line Items]  
Ownership percentage 4.00%
Number of shares into which warrants may be converted (in shares) 0.7
ARNO  
Investment [Line Items]  
Ownership percentage 0.00%
Number of shares into which warrants may be converted (in shares) 2.3
Xenetic Biosciences, Inc.  
Investment [Line Items]  
Ownership percentage 4.00%
Number of shares into which warrants may be converted (in shares) 0.5
Neovasc  
Investment [Line Items]  
Number of shares into which warrants may be converted (in shares) 1.0
Cocrystal  
Investment [Line Items]  
Number of shares into which warrants may be converted (in shares) 1.0
Sevion  
Investment [Line Items]  
Number of shares into which warrants may be converted (in shares) 0.3
InCellDx, Inc  
Investment [Line Items]  
Number of shares into which warrants may be converted (in shares) 0.7
Rxi  
Investment [Line Items]  
Number of shares into which warrants may be converted (in shares) 0.2