Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Narrative) (Details)

v3.3.0.814
Notes Payable (Narrative) (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Jul. 31, 2015
USD ($)
May. 31, 2015
USD ($)
Mar. 31, 2015
Sep. 30, 2015
USD ($)
$ / shares
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
d
$ / shares
Sep. 30, 2014
USD ($)
May. 15, 2015
USD ($)
Dec. 31, 2014
USD ($)
Mar. 31, 2014
USD ($)
$ / shares
shares
Debt Instrument [Line Items]                    
Debt Instrument, increase in accrued interest       $ 802,000   $ 1,200,000        
Notes payable       61,300,000   61,300,000        
End-of-term fee       1,000,000 $ 2,400,000 1,000,000 $ 2,400,000      
Loss on extinguishment of debt           (2,440,714) (2,610,196)      
Proceeds from notes payable           54,500,000 30,000,000      
Change in fair value of financial instruments       (1,577,275) (409,650) (1,702,902) (109,499)      
Repayments of notes payable $ 333,333         30,333,333 25,000,000      
Notes payable, current       333,333   333,333     $ 4,348,678  
Interest expense       2,200,000 921,000 4,700,000 2,800,000      
Interest expense recorded related to amortization       $ 65,000 201,000 $ 424,000 638,000      
Minimum                    
Debt Instrument [Line Items]                    
Exercise price of warrant issued, dollars per share | $ / shares       $ 0.01   $ 0.01        
CRG Term Loan                    
Debt Instrument [Line Items]                    
Debt face amount               $ 50,000,000    
Debt Instrument, unused borrowing capacity               $ 10,000,000    
Debt instrument, interest rate               14.00%    
Debt Instrument, interest rate, paid in cash               10.00%    
Debt Instrument, Interest rate, paid-in-kind               4.00%    
Frequency of periodic payment of principal amount           eight equal quarterly installments        
Payment terms           2 years        
Debt Instrument, increase in accrued interest           $ 769,000        
Notes payable       $ 50,800,000   $ 50,800,000        
Debt instrument, maturity date           Mar. 31, 2021        
Notice period for prepayment of tem loan           15 days        
Debt Instrument, Fee Amount               $ 625,000    
End-of-term fee       1,000,000   $ 1,000,000   1,000,000    
EBITDA, less than           5,000,000        
Lymphoseek sales revenue, less than           $ 11,000,000        
Target revenue minimum               45,000,000    
Cure right ratio           2.50%        
Liquidity minimum               5,000,000    
Debt unamortized discount, Net               2,200,000    
Unamortized debt discount       2,100,000   $ 2,100,000        
CRG Term Loan | Debt Instrument, Redemption, Period One [Member]                    
Debt Instrument [Line Items]                    
Early payment percentage           5.00%        
CRG Term Loan | Debt Instrument, Redemption, Period Two [Member]                    
Debt Instrument [Line Items]                    
Early payment percentage           1.00%        
CRG Term Loan | Debt Instrument, Redemption, Period Three [Member]                    
Debt Instrument [Line Items]                    
Early payment percentage           0.00%        
Oxford Finance, LLC                    
Debt Instrument [Line Items]                    
Debt face amount                   $ 30,000,000
Debt instrument, interest rate                   8.50%
Notes payable               26,900,000    
End-of-term fee               2,400,000    
Repayments of debt   $ 31,600,000                
Early redemption fee               289,000    
Loss on extinguishment of debt   $ (2,400,000)                
Oxford Finance, LLC | Series KK warrants                    
Debt Instrument [Line Items]                    
Number of shares underlying warrant issued | shares                   391,032
Exercise price of warrant issued, dollars per share | $ / shares                   $ 1.918
Warrants expiration period     2021-03              
Platinum Credit Facility [Member]                    
Debt Instrument [Line Items]                    
Debt Instrument, increase in accrued interest           $ 462,000        
Notes payable       8,200,000   $ 8,200,000        
Debt instrument, maturity date           Sep. 30, 2021        
Maximum borrowing capacity, amount       $ 50,000,000   $ 50,000,000   $ 35,000,000    
Effective interest rate       14.125%   14.125%        
Convertible threshold trading days | d           10        
Share price trigger | $ / shares           $ 2.53        
Proceeds from notes payable           $ 4,500,000        
Conversion option fair value       $ 4,100,000   4,100,000        
Change in fair value of financial instruments       1,600,000 $ 402,000 1,700,000 $ 104,000      
Estimated fair value       12,300,000   12,300,000        
Unused borrowing capacity       27,300,000   27,300,000        
Unused additional borrowing capacity       $ 15,000,000   $ 15,000,000        
Platinum Credit Facility [Member] | Prime Rate [Member]                    
Debt Instrument [Line Items]                    
Debt Instrument, basis spread on variable rate           6.75%        
Platinum Credit Facility [Member] | Interest Rate Pursuant to CGR Term Loan [Member]                    
Debt Instrument [Line Items]                    
Debt Instrument, basis spread on variable rate           0.125%        
Platinum Credit Facility [Member] | Minimum                    
Debt Instrument [Line Items]                    
Debt instrument, interest rate       10.00%   10.00%