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Notes Payable (Details) (USD $)
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1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jul. 31, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Jul. 31, 2012
Montaur Credit Facility [Member]
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Dec. 31, 2012
Montaur Credit Facility [Member]
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Jul. 31, 2012
Montaur Credit Facility [Member]
U.S. Prime Rate [Member]
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Jul. 31, 2012
Montaur Credit Facility [Member]
Interest Rate Scenario Three [Member]
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Dec. 31, 2012
Hercules Loan and Security Agreement [Member]
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Dec. 31, 2011
Hercules Loan and Security Agreement [Member]
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Dec. 31, 2011
Hercules Loan and Security Agreement [Member]
Navidia Debt Conversion Option [Member]
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Dec. 31, 2011
Hercules Loan and Security Agreement [Member]
Hercules Debt Conversion Option [Member]
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Dec. 31, 2012
Series GG Warrants [Member]
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Dec. 31, 2011
Series GG Warrants [Member]
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Dec. 31, 2011
Hercules Secured Term Promissory Note [Member]
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Dec. 31, 2012
Hercules Secured Term Promissory Note [Member]
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Dec. 31, 2011
Hercules Secured Term Promissory Note [Member]
Series GG Warrants [Member]
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| Notes Payable [Line Items] | |||||||||||||||||
| Maximum borrowing capacity | $ 50,000,000 | $ 10,000,000 | $ 10,000,000 | ||||||||||||||
| Current borrowing capacity | 15,000,000 | 7,000,000 | |||||||||||||||
| Debt instrument, spread on reference rate | 6.75% | 0.125% | 6.75% | ||||||||||||||
| Debt Instrument, minimum effective interest rate | 10.00% | 10.00% | |||||||||||||||
| Debt instrument, effective interest rate | 10.125% | 10.00% | 10.00% | ||||||||||||||
| Debt instrument, maturity date | Dec. 01, 2014 | ||||||||||||||||
| Debt instrument, frequency of payment | monthly | ||||||||||||||||
| Debt instrument, number of periodic payments | 30 | ||||||||||||||||
| Amount potentially available on terms to be negotiated | 15,000,000 | ||||||||||||||||
| Debt committed upon the approval of Lymphoseek on consistent terms | 20,000,000 | ||||||||||||||||
| Amount drawn down during period | 4,000,000 | ||||||||||||||||
| Principal amount due under credit facility | 4,000,000 | ||||||||||||||||
| Interest expense related to debt | 15,000 | 545,000 | 4,000 | ||||||||||||||
| Warrants, number of securities called by warrants | 333,333 | ||||||||||||||||
| Warrants, exercise price | $ 0.68 | $ 2.1 | $ 2.1 | ||||||||||||||
| Warrants, expiration date | Dec. 29, 2016 | Dec. 31, 2016 | |||||||||||||||
| Debt instrument, second advance amount | 3,000,000 | ||||||||||||||||
| Debt conversion, original debt, amount convertible | 1,500,000 | 1,500,000 | |||||||||||||||
| Debt conversion, price per share | $ 2.77 | $ 2.77 | |||||||||||||||
| Beneficial conversion feature | 24,888 | ||||||||||||||||
| Derivative liabilities | 568,930 | 520,478 | |||||||||||||||
| Debt issuance costs | 593,000 | 593,339 | |||||||||||||||
| Debt instrument, debt discount | 202,287 | 0 | 545,366 | ||||||||||||||
| Principal payments | 1,300,000 | ||||||||||||||||
| Notes payable | 5,700,000 | ||||||||||||||||
| Principal maturities in 2013 | 2,700,000 | ||||||||||||||||
| Principal maturities in 2014 | 7,000,000 | ||||||||||||||||
| Interest expense related to debt | $ 545,000 | $ 4,000 | $ 16,000 | ||||||||||||||