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