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SHAREHOLDERS' EQUITY (Details Textual) (USD $)
 0 Months Ended 9 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 04, 2012
Jan. 31, 2014
Apr. 30, 2014
Apr. 30, 2013
Dec. 17, 2013
Oct. 25, 2013
Dec. 18, 2013
BTX Warrants [Member]
Dec. 17, 2013
BTX Warrants [Member]
Apr. 30, 2014
Scenario, Previously Reported [Member]
Apr. 30, 2014
Restatement Adjustment [Member]
Apr. 30, 2014
After Reverse Stock Split [Member]
Dec. 17, 2013
Series E Preferred Stock [Member]
Jan. 30, 2006
Special Situations Fund [Member]
Apr. 30, 2014
Special Situations Fund [Member]
Apr. 30, 2006
Special Situations Fund [Member]
Oct. 25, 2013
Minimum [Member]
Dec. 17, 2013
Minimum [Member]
Series E Preferred Stock [Member]
Jan. 30, 2006
Minimum [Member]
Special Situations Fund [Member]
Oct. 25, 2013
Maximum [Member]
Jan. 30, 2006
Maximum [Member]
Special Situations Fund [Member]
Apr. 30, 2014
Incentive Stock Plan 2007 [Member]
Sep. 30, 2006
Incentive Stock Plan 2007 [Member]
Apr. 30, 2014
Incentive Stock Plan 2007 [Member]
Minimum [Member]
Apr. 30, 2014
Incentive Stock Plan 2007 [Member]
Maximum [Member]
Apr. 30, 2014
Incentive Stock Plan 2006 [Member]
Sep. 30, 2005
Incentive Stock Plan 2006 [Member]
Apr. 30, 2014
Incentive Stock Plan 2006 [Member]
Minimum [Member]
Apr. 30, 2014
Incentive Stock Plan 2006 [Member]
Maximum [Member]
Apr. 30, 2014
Stock Option Plan 2002 [Member]
Mar. 31, 2003
Stock Option Plan 2002 [Member]
Apr. 30, 2014
Stock Option Plan 2002 [Member]
Minimum [Member]
Apr. 30, 2014
Stock Option Plan 2002 [Member]
Maximum [Member]
May 31, 2014
Incentive Stock Plan 2014 [Member]
Apr. 30, 2014
Incentive Stock Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                                    
Common Stock, Capital Shares Reserved for Future Issuance     12,866,937                                     57,142       57,142       59,523     3,500,000  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options     1,080,000                                   41,429       25,142       12,636          
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price                                             $ 2.73 $ 21.98     $ 2.52 $ 4.20     $ 4.20 $ 24.71   $ 1.20
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant                                         13,929       21,775                 2,420,000
Stock-based compensation     $ 24,535 $ 111,683                                                            
Stock Sold by Former Stockholder in Violation of Securities Exchange Act                       2,438                                            
Share Price             $ 1.64               $ 49.00     $ 64.26   $ 88.34                            
Beneficial Ownership of Common Stock                         more than 10%                                          
Amount Agreed to be Settled to Company                           529,280                                        
Legal Fees 100,000                         272,539                                        
Section 16(b) settlement       254,361                   254,361                                        
Common Stock, Shares Authorized     14,285,714 14,285,714 75,000,000       100,000,000                                                  
Stock Issued During Period, Shares, Reverse Stock Splits     649             14,285,715   2,438                                            
Common Stock, Shares, Issued     13,913,164 993,538         6,954,766 993,538 994,187                                              
Listing Compliance With Nasdaq     d.                                                              
Preferred Stock, Par or Stated Value Per Share     $ 1,000 $ 1,000               $ 1,000                                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     154,961     154,961   1,500,000                                                    
Preferred Stock, Redemption Price Per Share                       $ 3.50                                            
Preferred Stock, Dividend Rate, Percentage                       12.00%                                            
Conversion Of Preferred Stock Beneficial Ownership Percentage                                 9.99%                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 2.29     $ 1.83   $ 5.00               $ 7.32     $ 7.52                              
Preferred Stock, Liquidation Preference, Value   $ 5,707,000 $ 5,707,000 $ 5,707,000                                                            
Liquidation Proceeds Percentage   125.00%                                                                
Stock Options Forfeiture Rate     15.00% 15.00%                                                            
Stock options issued     1,760