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Related Party Transactions (Details)
1 Months Ended 3 Months Ended 6 Months Ended
Jul. 31, 2017
USD ($)
shares
Jun. 30, 2017
USD ($)
shares
May 31, 2017
USD ($)
shares
Apr. 30, 2017
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
Sep. 30, 2016
USD ($)
shares
Aug. 31, 2016
USD ($)
shares
Jan. 31, 2016
USD ($)
shares
Jun. 30, 2017
USD ($)
shares
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
shares
Jun. 30, 2016
USD ($)
Feb. 28, 2017
USD ($)
Jan. 01, 2017
USD ($)
ft²
Nov. 30, 2016
USD ($)
Oct. 31, 2016
shares
Zebra                                
Related Party Transaction [Line Items]                                
Stock ownership percentage                     29.00%          
Equity method investment, ownership percentage   29.00%             29.00%   29.00%          
Sevion                                
Related Party Transaction [Line Items]                                
Equity method investment, ownership percentage   2.00%             2.00%   2.00%          
Number of shares into which warrants may be converted (in shares)   300,000             300,000   300,000          
Neovasc                                
Related Party Transaction [Line Items]                                
Equity method investment, ownership percentage   4.00%             4.00%   4.00%          
Number of shares into which warrants may be converted (in shares)   1,000,000             1,000,000   1,000,000          
ChromaDex Corporation                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, ownership percentage   2.00%             2.00%   2.00%          
MabVax                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, ownership percentage   4.00%             4.00%   4.00%          
Available-for-sale investment, additional investment in period | $     $ 500,000       $ 1,000,000                  
Number of shares into which warrants may be converted (in shares)   200,000             200,000   200,000          
COCP                                
Related Party Transaction [Line Items]                                
Equity method investment, ownership percentage   9.00%             9.00%   9.00%          
Additional investment in equity method investment | $       $ 1,000,000   $ 2,000,000                    
Number of shares into which warrants may be converted (in shares)   1,000,000             1,000,000   1,000,000          
Eloxx Pharmaceuticals                                
Related Party Transaction [Line Items]                                
Ownership percentage, cost method                     3.00%          
Cost method investment | $   $ 1,500,000             $ 1,500,000   $ 1,500,000          
ARNO                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, ownership percentage   0.00%             0.00%   0.00%          
Available-for-sale investment, additional investment in period | $             $ 300,000 $ 300,000                
InCellDx, Inc                                
Related Party Transaction [Line Items]                                
Equity method investment, ownership percentage   27.00%             27.00%   27.00%          
Number of shares into which warrants may be converted (in shares)   700,000             700,000   700,000          
BioCardia, Inc.                                
Related Party Transaction [Line Items]                                
Equity method investment, ownership percentage   5.00%             5.00%   5.00%          
Available-for-sale investment, ownership percentage   5.00%             5.00%   5.00%          
Number of shares into which warrants may be converted (in shares)   5,000,000             5,000,000   5,000,000          
NIMS                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, ownership percentage   1.00%             1.00%   1.00%          
Frost Real Estate Holdings LLC                                
Related Party Transaction [Line Items]                                
Area of real estate property (in square feet) | ft²                           29,500    
Lease payments per month in first year | $                           $ 81,000    
Lease payments per month in third year | $                           $ 86,000    
Dr Frost                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, additional investment in period | $         $ 2,500,000                      
Sevion                                
Related Party Transaction [Line Items]                                
Debt face amount | $                         $ 300,000.0   $ 200,000.0  
Interest rate on related party loan                         6.00%      
Reimbursement Of Travel Expense | Dr Frost                                
Related Party Transaction [Line Items]                                
Reimbursement paid to related party for travel | $                 $ 121,000 $ 62,000 $ 141,000 $ 119,000        
Common Stock | MabVax                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, additional investment in period (in shares)             207,900                  
Number of shares into which warrants may be converted (in shares)             415,800                  
Common Stock | COCP                                
Related Party Transaction [Line Items]                                
Equity method investment, additional investment in period (in shares)       4,166,667   4,878,050                    
Common Stock | ARNO                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, additional investment in period (in shares)             714,285 714,285                
Number of shares into which warrants may be converted (in shares)             357,142                  
Common Stock | BioCardia, Inc.                                
Related Party Transaction [Line Items]                                
Investment owned (in shares)                               5,027,726
Common Stock | Dr Frost                                
Related Party Transaction [Line Items]                                
Investment owned (in shares)         19,230,769                      
Series G Preferred Stock | MabVax                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, additional investment in period (in shares)     285,714                          
Series I Preferred Stock | MabVax                                
Related Party Transaction [Line Items]                                
Available-for-sale investment, additional investment in period (in shares)     322,820                          
Preferred C Stock | Eloxx Pharmaceuticals                                
Related Party Transaction [Line Items]                                
Cost method investment, shares purchased during period (in shares)   99,915                            
Museum of Science, Inc | Dr Frost and Mr Pfenniger                                
Related Party Transaction [Line Items]                                
Related party future contribution | $                             $ 1,000,000  
Subsequent Event | Sevion                                
Related Party Transaction [Line Items]                                
Additional investment in equity method investment | $ $ 1,500,000                              
Equity method investment, additional investment in period (in shares) 10,000,000