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Note 8 - Convertible Debt (PIK Notes) (Details Textual)
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 24 Months Ended
Nov. 03, 2014
USD ($)
$ / shares
Aug. 05, 2013
USD ($)
$ / shares
Aug. 31, 2015
USD ($)
Feb. 28, 2015
USD ($)
Aug. 31, 2014
USD ($)
Feb. 28, 2014
USD ($)
Aug. 31, 2013
USD ($)
Jun. 30, 2015
USD ($)
shares
Jun. 30, 2015
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Jul. 31, 2015
USD ($)
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member] | Combined Discount [Member]                          
Debt Instrument, Unamortized Discount                   $ 1,889,561      
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member] | Additional Discount from February 2015 Issuance [Member]                          
Debt Instrument, Unamortized Discount                   26,387      
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member] | Result of Anti-Dilution Adjustment [Member]                          
Debt Instrument, Convertible, Conversion Price | $ / shares   $ 1.36                      
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member] | After Series A Notes Issuance [Member]                          
Debt Instrument, Convertible, Number of Equity Instruments   7,720,588                      
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member] | Additional Discount from August 2015 Issuance [Member]                          
Debt Instrument, Unamortized Discount                   10,278      
Payment in Kind (PIK) Note [Member] | Series 2023 Notes [Member]                          
Debt Instrument, Term   10 years                      
Proceeds from Convertible Debt   $ 10,500,000                      
Debt Instrument, Face Amount   $ 10,500,000               12,762,816   $ 11,576,250  
Debt Instrument, Interest Rate, Stated Percentage   10.00%                      
Debt Instrument, Convertible, Conversion Price | $ / shares   $ 1.40                      
Debt Instrument, Convertible, Beneficial Conversion Feature   $ 2,055,000                      
Debt Instrument, Unamortized Discount                   1,889,561   1,949,555  
Derivative Liability                   215,842   478,149  
Convertible Notes Payable                   10,873,255   9,626,695  
Paid-in-Kind Interest     $ 607,753 $ 578,813 $ 551,250 $ 525,000              
Debt Instrument, Convertible, Number of Equity Instruments   7,500,000                      
Financial Instruments Subject to Mandatory Conversion Earliest Conversion   1 year                      
Financial Instrument Subject to Mandatory Conversion Period for Calculation of Conversion Feature   10 days                      
Payment in Kind (PIK) Note [Member] | Series A Notes [Member] | Minimum [Member]                          
Convertible Debt, Number of Written Days Notice 30 days                        
Payment in Kind (PIK) Note [Member] | Series A Notes [Member] | Maximum [Member]                          
Convertible Debt, Number of Written Days Notice 90 days                        
Payment in Kind (PIK) Note [Member] | Series A Notes [Member] | Result of Extension Option [Member]                          
Debt Instrument, Convertible, Conversion Price | $ / shares $ 0.10                        
Payment in Kind (PIK) Note [Member] | Series A Notes [Member] | Specified Event [Member]                          
Debt Instrument, Interest Rate, Stated Percentage 1.00%                        
Payment in Kind (PIK) Note [Member] | Series A Notes [Member] | Combined Discount [Member]                          
Debt Instrument, Unamortized Discount $ 16,560,771                        
Payment in Kind (PIK) Note [Member] | Series A Notes [Member] | Additional Discount from February 2015 Issuance [Member]                          
Debt Instrument, Unamortized Discount                   162,887      
Payment in Kind (PIK) Note [Member] | Series A Notes [Member]                          
Debt Instrument, Term 4 years                        
Proceeds from Convertible Debt $ 12,500,000                        
Debt Instrument, Convertible, Remaining Discount Amortization Period 2 years                        
Debt Instrument, Face Amount $ 19,848,486                 20,840,910   19,848,486 $ 992,424
Debt Instrument, Interest Rate, Stated Percentage 10.00%                        
Debt Instrument, Convertible, Conversion Price | $ / shares $ 0.92                        
Shares Issued For Liquidated Damages, Shares | shares               1,015,086          
Shares Issued For Liquidated Damages               $ 741,011          
Debt Instrument, Convertible, Beneficial Conversion Feature $ 9,212,285                        
Debt Instrument, Unamortized Discount $ 7,348,486                 15,864,579   16,450,742  
Derivative Liability                   3,420,627   9,557,476  
Amortization of Debt Discount (Premium)                   749,051      
Convertible Notes Payable                   4,976,331   $ 3,397,744  
Payment in Kind (PIK) Note [Member] | Minimum [Member]                          
Debt Instrument, Convertible, Remaining Discount Amortization Period                       2 years  
Payment in Kind (PIK) Note [Member]                          
Proceeds from Convertible Debt                       $ 23,000,000  
Debt Instrument, Face Amount                   33,603,726   31,424,736  
Debt Instrument, Unamortized Discount                   17,754,140   18,400,297  
Derivative Liability                   3,636,469   10,035,625  
Convertible Notes Payable                   15,849,586   13,024,439  
Other Expense [Member]                          
Liquidated Damages                 $ 541,011        
Proceeds from Convertible Debt             $ 10,500,000            
Accrued Liquidated Damages                       200,000  
Shares Issued For Liquidated Damages                   741,011      
Debt Instrument, Unamortized Discount                   17,745,140   18,400,297  
Derivative Liability                   3,636,469   $ 10,035,625  
Paid-in-Kind Interest                   $ 2,178,990 $ 1,076,250