v2.4.0.8

Stock-Based Compensation (Schedule of Stock Plan Activity) (Details) (USD $)	6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Shares
Outstanding, beginning	2,245,000
Issued
Cancelled/forfeited	(1,300,000)
Exercised
Outstanding, ending	945,000
Options vested and expected to vest	945,000
Options exercisable at end of period	742,500
Exercise Price
Outstanding, beginning	$ 0.38
Issued
Cancelled/forfeited	$ 0.49
Exercised
Outstanding, ending	$ 0.22
Options vested and expected to vest	$ 0.22
Options exercisable at end of period	$ 0.22
Remaining Contractual Term
Remaining contractual term, options issued
Remaining contractual term, options outstanding	1 year 7 months 24 days	1 year 5 months 26 days
Remaining contractual term, options vested and expected to vest	1 year 6 months 4 days
Remaining contractual term, options exercisable	1 year 4 months 24 days
Aggregate Intrinsic Value
Outstanding, beginning
Issued
Outstanding, ending
Options vested and expected to vest
Options exercisable at end of period

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The aggregate intrinsic value for options granted during the period.

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Weighted average remaining contractual term for option awards granted during period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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-Name Regulation S-X (SX)

-Number 210

-Section 04

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