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Comprehensive Income (Loss)	12 Months Ended
Comprehensive Income (Loss)	Apr. 30, 2012
Comprehensive Income (Loss) [Abstract]
Comprehensive Income (Loss)	Note 14. Comprehensive Income (Loss) Comprehensive income (loss) includes net income (loss) and net foreign currency translation adjustments. The comprehensive gain (loss) on foreign currency translations for the years ended April 30, 2012, 2011, and 2010 was ($102,000) and $60,000, and $496,000 respectively.

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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