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Stockholders' Equity (Details Textual) (USD $)
 1 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
May 31, 2003
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Dec. 31, 2009
May 31, 2005
Sep. 30, 2012
2012 plan [Member]
May 31, 2011
Common Stock [Member]
Dec. 31, 2010
Common Stock [Member]
May 31, 2011
Private placement [Member]
Common Stock [Member]
Oct. 31, 2010
Private placement [Member]
Common Stock [Member]
Sep. 30, 2012
Restricted Stock [Member]
Sep. 30, 2011
Restricted Stock [Member]
Mar. 15, 2011
Restricted Stock [Member]
Jan. 31, 2011
Restricted Stock [Member]
Sep. 30, 2012
Warrant [Member]
May 31, 2005
Warrant [Member]
Jun. 30, 2011
Warrant [Member]
Minimum [Member]
Jun. 30, 2011
Warrant [Member]
Maximum [Member]
Dec. 31, 2009
Warrant [Member]
Convertible debentures [Member]
Sep. 30, 2012
Outstanding Restricted Stock [Member]
Sep. 30, 2012
Restricted Stock Units (RSUs) [Member]
Sep. 30, 2011
Restricted Stock Units (RSUs) [Member]
Sep. 30, 2010
Restricted Stock Units (RSUs) [Member]
Sep. 30, 2012
Restricted Stock Units (RSUs) [Member]
2012 plan [Member]
Stockholders' Equity (Textual) [Abstract]                                                  
Common stock sold to investors   25,995,216 24,144,366         2,857,143     500,000     300,000     321,428     337,501          
Common stock per share value   $ 0.001 $ 0.001         $ 5.25     $ 1.50     $ 5.12                      
Common stock issued exercise price   0.91     0.91 0.70                                      
Proceeds from issuance of common stock     $ 14,595,366         $ 15,000,000     $ 750,000                            
Legal fees in connection with private placement                   80,000                              
Common stock reserved for issuance of restricted stock units                             1,000,000                    
Warrants exercised expiration period                                   Feb. 01, 2012 May 01, 2012            
Common stock exercised                               330,834                  
Common stock outstanding   25,995,216 24,144,366                         6,667                  
Warrants expiration period                               2014-12                  
Common stock issued upon the conversion of outstanding convertible debentures                 1,418,573                                
Cash compensation to placement agent fees               1,050,000                                  
Placement agent out-of-pocket expenses reimbursed amount               25,000                                  
Net proceeds from private placement               13,845,000                                  
Total intrinsic value of options exercised   14,215,750                                              
Recognized stock-based compensation expense related to the outstanding restricted stock units                       529,072 179,343                        
Warrants issued                               288,582                  
Number of shares cancelled in consideration of the issuance                               32,846                  
Allocated Share-based Compensation Expense   2,599,858 1,271,238                                            
Unrecognized compensation expense   6,161,479                   2,543,465                          
Purchase of common stock             723,000                                    
Restricted stock unit outstanding under 2012 plan   3,512,286 4,553,904 4,534,328                                   515,834 300,000    215,834
Number of common stock reserved for future grants             1,245,067                                    
Purchase of granted stock option 400000                                                
Common stock reserved for issuance under stock holders incentive plan             2,000,000                                    
Estimated average forfeiture rate   14.85%                                              
Weighted average period for unrecognized compensation expense expected to be recognized   3 years 3 months 18 days                                     3 years 6 months        
Per share weighted average fair value of options granted   $ 5.97                   $ 8.44                          
Restricted stock unit installment period                       4 years                          
Tax benefit   $ 0 $ 0