Notes Payable (Narrative) (Details) (USD $)
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3 Months Ended | 9 Months Ended | 1 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended | |||||||||||||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
General Electric Capital Corporation [Member]
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Jun. 30, 2013
General Electric Capital Corporation [Member]
installment
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Jun. 25, 2013
General Electric Capital Corporation [Member]
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Sep. 30, 2012
Hercules Technology II, L.P. Notes [Member]
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Jun. 24, 2013
Hercules Technology II, L.P. Notes [Member]
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Jun. 25, 2013
Hercules Technology II, L.P. Notes [Member]
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Sep. 30, 2012
Hercules Technology II, L.P. Notes [Member]
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Sep. 30, 2013
Platinum Montaur Life Sciences, LLC Credit Facility [Member]
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Jun. 25, 2013
Platinum Montaur Life Sciences, LLC Credit Facility [Member]
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Sep. 30, 2013
Series X Warrants and Series AA Warrants [Member]
Platinum Montaur Life Sciences, LLC Credit Facility [Member]
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Jun. 30, 2013
Series X Warrants and Series AA Warrants [Member]
Platinum Montaur Life Sciences, LLC Credit Facility [Member]
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Jun. 30, 2013
Series HH Warrants [Member]
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Jun. 30, 2013
Series HH Warrants [Member]
General Electric Capital Corporation [Member]
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Jun. 25, 2013
Series HH Warrants [Member]
General Electric Capital Corporation [Member]
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Jun. 30, 2013
Preferred Stock [Member]
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Sep. 30, 2013
Preferred Stock [Member]
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Jun. 30, 2013
Common Stock [Member]
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Sep. 30, 2013
Common Stock [Member]
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Sep. 30, 2013
Maximum [Member]
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Sep. 30, 2013
Maximum [Member]
Platinum Montaur Life Sciences, LLC Credit Facility [Member]
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Debt Instrument [Line Items] | ||||||||||||||||||||||||
Debt Instrument, Face Amount | $ 25,000,000 | |||||||||||||||||||||||
Debt instrument, interest rate | 9.83% | 10.00% | ||||||||||||||||||||||
Number of shares underlying warrant issued | 301,205 | 301,205 | ||||||||||||||||||||||
Exercise price of warrant issued | 2.49 | 2.49 | 3.83 | |||||||||||||||||||||
Number of installment payments on notes payable | 30 | |||||||||||||||||||||||
Percentage of original principal amount of loan to be paid as a fee | 4.00% | |||||||||||||||||||||||
Debt Instrument, Covenant Description | 17,600,000 | |||||||||||||||||||||||
Notes Payable | 25,000,000 | 3,200,000 | ||||||||||||||||||||||
Unamortized debt discount | 1,800,000 | 1,900,000 | 187,000 | |||||||||||||||||||||
Debt issuance cost | 783,000 | 881,000 | ||||||||||||||||||||||
Principal payments on notes payable | 5,982,156 | 620,480 | 620,000 | 1,300,000 | 4,400,000 | 620,000 | 4,781,333 | |||||||||||||||||
Debt instrument, end of term fee | 250,000 | |||||||||||||||||||||||
Debt instrument, early payment penalty | 66,000 | |||||||||||||||||||||||
Loss on extinguishment of debt | 0 | 0 | (1,372,266) | 0 | 429,000 | |||||||||||||||||||
Unamortized debt issuance cost | 176,000 | |||||||||||||||||||||||
Line of Credit Facility, Maximum Borrowing Capacity | 35,000,000 | |||||||||||||||||||||||
Interest rate in addition to Prime rate | 6.75% | |||||||||||||||||||||||
Interest rate in addition to amended agreement | 0.125% | |||||||||||||||||||||||
Percentage of VWAP for conversion calculation | 90.00% | |||||||||||||||||||||||
Number of days preceding the date of conversion request | 10 days | |||||||||||||||||||||||
Minimum revenue from sales and licensing for mandatory repayment due | 2,000,000 | |||||||||||||||||||||||
Long-term embedded liability, estimated fair value | 943,000 | |||||||||||||||||||||||
Derivative, Gain (Loss) on Derivative, Net | (388,000) | |||||||||||||||||||||||
Series B preferred stock issued, shares | 2,364.9 | 2,364.9 | ||||||||||||||||||||||
Number of common shares underlying Series B Preferred Stock | 7,733,223 | 7,733,223 | ||||||||||||||||||||||
Shares conversion, number of common stock equivalent to each preferred stock | 3,270 | 3,270 | ||||||||||||||||||||||
Long-term Debt, Fair Value | 4,600,000 | |||||||||||||||||||||||
Debt Instrument, Unused Borrowing Capacity, Amount | 31,800,000 | |||||||||||||||||||||||
Interest expense related to debt | $ 258,000 | $ 147,000 | $ 502,000 | $ 407,000 |