Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Details)

v2.4.0.6
Notes Payable (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Debt Instrument [Line Items]    
Principal payments on notes payable $ 735,410   
Interest expense recorded 363,082 293,671
Hercules Technology II, L.P. Notes [Member]
   
Debt Instrument [Line Items]    
Principal payments on notes payable 656,000  
Interest expense recorded 255,000 293,000
Debt instrument, principal amount 5,100,000  
Platinum Montaur Life Sciences, LLC Credit Facility [Member]
   
Debt Instrument [Line Items]    
Interest expense recorded 106,000  
Draws under credit facility 4,000,000  
Total principal amount due under facility 8,000,000  
Increase in maximum borrowing capacity $ 20,000,000