Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Narrative) (Details)

v2.4.0.8
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
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