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
Jul. 31, 2012
Jul. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]    
Number of shares granted 100,000  
Stock-based compensation expense $ 99,451 $ 148,252
Total unrecognized compensation costs related to stock options 141,000  
Total unrecognized compensation costs related to stock options, Weighted average period for recognition 6 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 [Member] | Director
    
Summary of Significant Accounting Policies (Textual) [Abstract]    
Vesting periods for options 1 year  
Nonqualified Stock Options | Maximum [Member] | 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  
Stock Options | Two Thousand One Incentive and Non-statutory Stock Option Plan [Member] | Minimum [Member]
    
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 [Member]
    
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  
Total unrecognized compensation costs related to stock options $ 141,000  
Stock Options | Two Thousand Eleven Incentive and Non-statutory Stock Option Plan [Member] | Minimum [Member]
    
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 [Member]
    
Summary of Significant Accounting Policies (Textual) [Abstract]    
Vesting periods for options 5 years