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Long-term Debt (Details)
6 Months Ended
Jul. 10, 2017
May 01, 2017
$ / shares
shares
Apr. 01, 2017
USD ($)
$ / shares
Dec. 14, 2016
USD ($)
$ / shares
Aug. 22, 2016
USD ($)
election
$ / shares
May 10, 2016
USD ($)
$ / shares
shares
Jun. 30, 2017
USD ($)
$ / shares
shares
Aug. 07, 2017
Mar. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
$ / shares
shares
Jul. 29, 2016
$ / shares
Jun. 28, 2016
$ / shares
May 08, 2013
$ / shares
Debt Instrument [Line Items]                          
Exercise price (usd per share) | $ / shares           $ 30.20 $ 79.40     $ 79.40 $ 8.60 $ 8.60 $ 49.40
Debt instrument, covenant, compensating cash balance                 $ 13,200,000        
Common stock, shares outstanding | shares   37,435,524         37,435,524     15,190,473      
Common stock, shares issued | shares             37,469,274     15,224,223      
Outstanding principle             $ 13,171,702     $ 17,621,702      
Current portion of long-term debt             13,025,180     16,397,030      
Unamortized discount and debt issuance costs             146,552     $ 1,224,672      
Principle redeemed             $ 4,450,000            
Shares issued for debt, shares | shares             4,497,466            
Securities Purchase Agreement | Secured Debt                          
Debt Instrument [Line Items]                          
Principle amount of debt           $ 25,530,000              
Fixed coupon rate           6.375%              
Number of shares availabe from warrants | shares           100,000              
Exercise price (usd per share) | $ / shares           $ 0.0001              
Proceeds from issuance of debt and warrants           $ 23,400,000              
Debt principal that could be redeemed           $ 1,100,000              
Delivery discount percentage           7.50%              
Duration of average market price used for warrant exercise price           3 days              
Discount to the prior trading day’s volume weighted average price           7.50%              
Minimum price condition (per share) | $ / shares           $ 15.00              
Debt instrument, covenant, compensating cash balance           $ 24,000,000              
Percentage of VWAPs           92.50%              
Amendment Agreement | Secured Debt                          
Debt Instrument [Line Items]                          
Fixed coupon rate         9.00%                
Debt principal that could be redeemed         $ 1,500,000                
Minimum price condition (per share) | $ / shares         $ 4.00                
Final payment of interest         $ 765,900                
Maximum prepayment of principle if demanded         $ 18,500,000                
Premium on outstanding prepayment amount         10.00%                
Common stock trading price threshold for debt redemption | $ / shares         $ 8.00                
Debt principal that could be redeemed based on common stock price         $ 2,200,000                
Number of elections company can make to redeem debt in year | election         3                
Debt principal that could be redeemed based on company's elections         $ 2,500,000                
Price per share that holder can convert outstanding debt balance | $ / shares         $ 12.00                
Debt instrument, covenant, compensating cash balance         $ 18,500,000                
First Waiver | Secured Debt                          
Debt Instrument [Line Items]                          
Minimum price condition (per share) | $ / shares     $ 0.30 $ 1.00                  
Debt instrument, covenant, compensating cash balance       $ 18,500,000                  
Cash in excess of debenture     $ 10,000,000 10,000,000                  
Redemption payments       $ 1,500,000                  
Daily closing share price appreciation       25.00%                  
2017 Amendment Agreement | Secured Debt                          
Debt Instrument [Line Items]                          
Minimum price condition (per share) | $ / shares   $ 0.35                      
Common stock, shares issued | shares   9,131,868                      
Number of convertible shares | shares   45,000,000                      
Series A Warrant | Common Stock | Securities Purchase Agreement | Secured Debt                          
Debt Instrument [Line Items]                          
Exercise price (usd per share) | $ / shares           $ 30.20              
Series A Warrant | Common Stock | Amendment Agreement | Secured Debt                          
Debt Instrument [Line Items]                          
Exercise price (usd per share) | $ / shares         $ 8.60                
Subsequent Event | Secured Debt                          
Debt Instrument [Line Items]                          
Redemption limit on any given day, percentage of daily dollar trading volume               15.00%          
Subsequent Event | July 2017 Amendment Agreement | Secured Debt                          
Debt Instrument [Line Items]                          
Delivery discount percentage 20.00%                        
Percentage of VWAPs 80.00%                        
Number of days average for exercise price 20 days                        
Percentage of prior day VMAP 115.00%