Quarterly report pursuant to sections 13 or 15(d)

Preferred Stock - Additional Information (Detail)

v2.4.0.8
Preferred Stock - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 6 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2013
Dec. 31, 2012
May 14, 2013
Sep. 25, 2012
Sep. 12, 2012
Jun. 30, 2013
Series B
Dec. 31, 2012
Series B Preferred Stock
Jun. 30, 2013
Series B Preferred Stock
Jun. 30, 2013
Series C Convertible Preferred Stock
Jun. 30, 2013
Series C Convertible Preferred Stock
D
Dec. 31, 2012
Series C Convertible Preferred Stock
Dec. 20, 2012
Series C Convertible Preferred Stock
Jun. 30, 2013
Series C Convertible Preferred Stock
Period 3
Jun. 30, 2013
Series C Convertible Preferred Stock
Period 4
May 15, 2013
Series D Convertible Preferred Stock
Mar. 31, 2013
Series D Convertible Preferred Stock
Jun. 30, 2013
Series D Convertible Preferred Stock
Dec. 31, 2012
Series D Convertible Preferred Stock
Dec. 20, 2012
Series D Convertible Preferred Stock
Feb. 21, 2013
Series E Convertible Preferred Stock
Jun. 30, 2013
Series E Convertible Preferred Stock
Jun. 30, 2013
Series E Convertible Preferred Stock
Jun. 30, 2013
Series E Convertible Preferred Stock
After Trigger Date
Jun. 30, 2013
Series E Convertible Preferred Stock
Scenario 2
Preferred Stock [Line Items]                                                    
Preferred stock authorized to issue 5,000,000   5,000,000             1,000,000 25,000 25,000 25,000           13,000 13,000            
Proceeds from issuance of convertible preferred stock               $ 6,000,000 $ 5,195,225     $ 10,000,000                   $ 5,000,000        
Preferred stock, issued             600,000       10,000 10,000 10,000             11,177            
Preferred stock , Par value             $ 0.001       $ 0.001 $ 0.001 $ 0.001 $ 0.001           $ 0.001 $ 0.001          
Conversion price per share     $ 0.13                 $ 0.6889         $ 0.6959         $ 1.17        
Convertible Preferred Stock, Total Shares Issued Upon Conversion             46,153,692                                      
Ownership Percentage       73.00%                                            
Convertible stock, Conversion of preferred stock   599,998                             11,915                  
Convertible stock, Conversion of convertible securities   46,153,846                             1,712,167                  
Liquidation preference per share             $ 10             $ 1,000             $ 100 $ 1,000        
Common stock price in increased rate           $ 0.59                                        
Preferred stock issued due to investment agreement                           10,000             11,177 5,000        
Preferred stock conversion as a percentage its stated value in an event of a change in control or a merger or recapitalization                             150.00% 125.00%                    
Preferred stock conversion, trading price as percentage of conversion price                       200.00%                            
Preferred stock conversion, number of trading days                       20 days                            
Preferred stock conversion, number of immediate preceding consecutive trading days                       30                            
Preferred stock, cumulative dividends rate                       10.00%                       5.00%    
Preferred stock, stated value for cumulative dividends                       $ 1,000                            
Preferred stock, dividends accrued                     250,000 500,000                            
Merger agreement, number of shares issued                                   738                
Preferred stock, outstanding                     10,000 10,000 10,000           0 11,177            
Preferred stock redemption price as percentage of liquidation preference                                                 110.00% 105.00%
Accrual of dividends on Series E convertible preferred stock     593,056                                       63,194 90,279    
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net (3,821,270)   (6,990,353)                                              
Embedded derivative, fair value of embedded derivative liability         $ 8,600,000