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Related Party Transactions (Details)
$ / shares in Units, ft² in Thousands, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2016
USD ($)
shares
Nov. 30, 2015
USD ($)
shares
Oct. 31, 2015
USD ($)
$ / shares
shares
Jul. 31, 2015
USD ($)
shares
Jun. 30, 2016
USD ($)
$ / shares
shares
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
$ / shares
shares
Jun. 30, 2015
USD ($)
Aug. 31, 2015
$ / shares
May 31, 2015
$ / shares
May 28, 2015
USD ($)
ft²
Zebra                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         29.00%   29.00%        
Additional investment | $   $ 1,000                  
Sevion                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         3.00%   3.00%        
Invested in common shares | $       $ 500              
Warrants to purchase common shares       333,333 500,000   500,000        
Neovasc                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         4.00%   4.00%        
Warrants to purchase common shares         1,000,000   1,000,000        
MabVax                      
Related Party Transaction [Line Items]                      
Available-for-sale investment, ownership percentage         1.00%   1.00%        
Invested in common shares | $     $ 400                
Investment owned (in shares)     340,909                
Warrants to purchase common shares     170,454   1,800,000   1,800,000        
Stock price per share (in dollars per share) | $ / shares     $ 1.10                
COCP                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         8.00%   8.00%        
Warrants to purchase common shares         1,000,000   1,000,000        
ARNO                      
Related Party Transaction [Line Items]                      
Available-for-sale investment, ownership percentage         4.00%   4.00%        
Warrants to purchase common shares         800,000   800,000        
Additional investment | $ $ 300                    
InCellDx, Inc                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         27.00%   27.00%        
Warrants to purchase common shares         700,000   700,000        
Equity Method Investee | Zebra                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         29.00%   29.00%        
Equity Method Investee | Sevion                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         3.00%   3.00%        
Equity Method Investee | Neovasc                      
Related Party Transaction [Line Items]                      
Equity method investment, ownership percentage         4.00%   4.00%        
Investee | ChromaDex Corporation                      
Related Party Transaction [Line Items]                      
Available-for-sale investment, ownership percentage         2.00%   2.00%        
Investee | ARNO                      
Related Party Transaction [Line Items]                      
Available-for-sale investment, ownership percentage         4.00%   4.00%        
Frost Real Estate Holdings LLC                      
Related Party Transaction [Line Items]                      
Area of real estate property (in square feet) | ft²                     25
Lease payments per month in first year | $                     $ 66
Lease payments per month in fifth year | $                     75
Rent reduction | $                     $ 200
Reimbursement Of Travel Expense | Dr Frost                      
Related Party Transaction [Line Items]                      
Reimbursement paid to related party for travel | $         $ 62 $ 167 $ 119 $ 293      
Series C Preferred Stock | Sevion                      
Related Party Transaction [Line Items]                      
Investment owned (in shares)       66,667              
Common Stock                      
Related Party Transaction [Line Items]                      
Stock price per share (in dollars per share) | $ / shares         $ 9.34   $ 9.34   $ 12.38 $ 13.88  
Common Stock | Sevion                      
Related Party Transaction [Line Items]                      
Investment owned (in shares)       666,667              
Common Stock | ARNO                      
Related Party Transaction [Line Items]                      
Investment owned (in shares) 714,285                    
Series A-2 Preferred Stock | Zebra                      
Related Party Transaction [Line Items]                      
Investment owned (in shares)   420,000