Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Stock Option Expense (Details Narrative)

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Summary of Significant Accounting Policies - Stock Option Expense (Details Narrative) (USD $)
 3 Months Ended 6 Months Ended
Oct. 31, 2012
Oct. 31, 2012
Oct. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]      
Number of shares granted 100,000    
Stock-based compensation expense $ 80,000 $ 178,987 $ 283,188
Total unrecognized compensation costs related to stock options 77,000 77,000  
Total unrecognized compensation costs related to stock options, Weighted average period for recognition 9 months    
Nonqualified Stock Options 2010-09-23 | Mr. Sheerr
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Date of grant of option Sep. 23, 2010    
Vesting periods for options 1 year    
Number of shares granted 100,000    
Options expiration period EXPIRE FIVE YEARS AFTER DATE OF GRANT.    
Nonqualified Stock Options 2011-09-22 | Mr. Sheerr
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Date of grant of option Sep. 22, 2011    
Vesting periods for options 1 year    
Number of shares granted 100,000    
Options expiration period EXPIRE FIVE YEARS AFTER DATE OF GRANT.    
Nonqualified Stock Options 2012-07-19 | Mr. Sheerr
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Date of grant of option Jul. 19, 2012    
Vesting periods for options 1 year    
Number of shares granted 100,000    
Options expiration period EXPIRE FIVE YEARS AFTER DATE OF GRANT.    
Stock Options One
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Date of grant of option Jun. 30, 2008    
Number of shares granted 50,000    
Options expiration period EXPIRE TEN YEARS AFTER THE DATE OF GRANT.    
Exercise price of options granted $ 2.60    
Percentage of options exercisable on date of grant 100.00%    
Nonqualified Stock Options | Director
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Options expiration period EXPIRE EITHER FIVE OR TEN YEARS AFTER DATE OF GRANT.    
Nonqualified Stock Options | Minimum | Director
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Vesting periods for options 1 year    
Nonqualified Stock Options | Maximum | Director
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Vesting periods for options 2 years    
Stock Options | Two Thousand One Incentive and Non-statutory Stock Option Plan [Member]
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Number of shares allowed for granting under the plan 1,800,000 1,800,000  
Stock Options | Two Thousand One Incentive and Non-statutory Stock Option Plan [Member] | Minimum
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Vesting periods for options 1 year    
Stock Options | Two Thousand One Incentive and Non-statutory Stock Option Plan [Member] | Maximum
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Vesting periods for options 5 years    
Stock Options | Two Thousand Eleven Incentive and Non-statutory Stock Option Plan [Member]
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Number of shares allowed for granting under the plan 200,000 200,000  
Total unrecognized compensation costs related to stock options $ 141,000 $ 141,000  
Stock Options | Two Thousand Eleven Incentive and Non-statutory Stock Option Plan [Member] | Minimum
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Vesting periods for options 1 year    
Stock Options | Two Thousand Eleven Incentive and Non-statutory Stock Option Plan [Member] | Maximum
      
Summary of Significant Accounting Policies (Textual) [Abstract]      
Vesting periods for options 5 years