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Stockholders' Deficit - Additional Information (Detail) (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 3 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Incentive_Plan
Jun. 30, 2012
Dec. 31, 2012
Sep. 30, 2012
Warrants [Member]
Investor
Mar. 31, 2013
Common Stock [Member]
Sep. 30, 2012
Common Stock [Member]
Jun. 30, 2013
Common Stock [Member]
Dec. 31, 2012
Common Stock [Member]
Jun. 03, 2010
Common Stock [Member]
Jan. 16, 2008
Common Stock [Member]
Aug. 17, 2007
Common Stock [Member]
Sep. 30, 2012
Common Stock [Member]
Warrants [Member]
Sep. 30, 2012
Common Stock [Member]
Employee Stock Incentive Plan [Member]
Aug. 17, 2007
Common Stock [Member]
Restricted Stock Units (RSUs) [Member]
Sep. 30, 2012
Series G Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Common stock, shares issued 79,625,966   79,625,966   75,416,203     140,000 1,844,615 1,441,013              
Common stock, shares value representing payment for principal $ 7,963   $ 7,963   $ 7,542       $ 4,970,665 $ 4,262,527              
Common shares issued from warrant conversion             2,010,500 287,500                  
Number of accredited investors to whom common stock stock issued           4                      
Number of warrants exercised in exchange for common stock shares                           287,500      
Common stock shares issued employee stock incentive plan                             8,900    
Number of series G preferred stock converted                                 1
Number of stock incentive plans     2                            
Stock incentive plan expiration date         Aug. 17, 2007                        
Shares authorized for stock-based compensation                     3,000,000 2,500,000 2,500,000     500,000  
Exercise price of incentive option granted                   Exercise price of any incentive option granted to an eligible employee owning more than 10% of our outstanding common stock must not be less than 110% of fair market value on the date of the grant.              
Eligible employee threshold percentage                 10.00%                
Purchase price of common stock percentage                 110.00%                
Share-based compensation $ 552,193 $ 529,669 $ 1,240,773 $ 918,088                          
Weighted average estimated fair value of stock options   $ 1.48   $ 1.48                          
Stock options issued 0