Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event (Narrative) (Details)

v3.4.0.3
Subsequent Event (Narrative) (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Apr. 07, 2016
Subsequent Event [Line Items]        
Lymphoseek sales revenue $ 3,782,680 $ 1,835,422 $ 10,300,000  
Capital Royalty Partners II LP [Member]        
Subsequent Event [Line Items]        
Debt instrument default interest rate percentage 18.00%      
Minimum sales revenue target in 2015 $ 22,500,000   11,000,000  
Reduced minimum sales revenue target in 2015     $ 10,000,000  
Capital Royalty Partners II LP [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Debt instrument default interest rate percentage       18.00%