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Notes Payable (Narrative) (Details) (USD $)
|
3 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 1 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2014
|
Mar. 31, 2013
|
Dec. 31, 2013
|
Mar. 31, 2014
Oxford Finance, LLC
|
Mar. 31, 2014
Oxford Loan Agreement, Amortization Date of April 1, 2015
|
Mar. 31, 2014
Oxford Loan Agreement, Amortization Date of April 1, 2016
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Mar. 31, 2014
Oxford Loan Agreement, Amortization Date of April 1, 2017
|
Mar. 31, 2014
Series KK Warrants and other fees to lenders
|
Mar. 31, 2014
Second Amended Platinum Note
|
Mar. 31, 2014
Second Amended Platinum Note
Interest Rate Scenario One
|
Mar. 31, 2014
Second Amended Platinum Note
Interest Rate Scenario Two
|
Mar. 31, 2014
Second Amended Platinum Note
Interest Rate Scenario Three
|
Mar. 31, 2014
GECC, MidCap Financial SBIC and LP (MidCap)
|
Mar. 31, 2014
Oxford Finance, LLC
Series KK warrants
|
|
| Debt Instrument [Line Items] | ||||||||||||||
| Debt Instrument, Face Amount | $ 30,000,000 | |||||||||||||
| Debt instrument, interest rate | 8.50% | |||||||||||||
| Number of shares underlying warrant issued | 391,032 | |||||||||||||
| Exercise price of warrant issued, dollars per share | 1.918 | |||||||||||||
| Debt Instrument, Term | 48 months | 36 months | 24 months | |||||||||||
| Debt Instrument, Final Payment Multiplier; Percent item type | 7.95% | 8.95% | 9.95% | |||||||||||
| Notes Payable | 30,000,000 | 3,200,000 | ||||||||||||
| Debt Instrument, Unamortized Discount (Premium), Net | 3,000,000 | |||||||||||||
| Unamortized debt discount | 0 | 743,062 | 2,900,000 | |||||||||||
| Deferred Finance Costs, Net | 116,000 | |||||||||||||
| Debt issuance cost | 118,000 | |||||||||||||
| Repayments of Long-term Debt | 26,700,000 | |||||||||||||
| Debt Instrument, pre-payment Fee, Fee Amount | 500,000 | |||||||||||||
| Debt Instrument, end-of-term, Fee Amount | 1,000,000 | |||||||||||||
| Interest Expense, Debt | 943,838 | 363,082 | ||||||||||||
| Interest rate in addition to Prime rate | 6.75% | |||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 10.00% | |||||||||||||
| Debt Instrument, Basis Spread on Variable Rate, Oxford Loan | 0.125% | |||||||||||||
| Derivative, Gain (Loss) on Derivative, Net | 1,000 | 0 | 394,000 | |||||||||||
| Long-term Debt, Fair Value | 3,900,000 | |||||||||||||
| Debt Instrument, Unused Borrowing Capacity, Amount | 31,800,000 | |||||||||||||
| Interest Expense Recorded Related To Amortization | $ 241,827 | $ 122,557 | ||||||||||||