Consolidated Balance Sheets (Parenthetical) In Thousands, except Share data, unless otherwise specified	Jul. 31, 2012 USD ($)	Jul. 31, 2012 EUR (€)	Apr. 30, 2012 USD ($)	Apr. 30, 2012 EUR (€)	Apr. 30, 2011 USD ($)	Apr. 30, 2011 EUR (€)
Allowance for doubtful accounts	$ 2,300		$ 2,600		$ 500
Capital stock, par value		€ 1		€ 1		€ 1
Capital stock, shares authorized	1,228,377,770	1,228,377,770	1,228,377,770	1,228,377,770	1,184,793,767	1,184,793,767
Capital stock, shares issued	1,228,377,770	1,228,377,770	1,228,377,770	1,228,377,770	1,184,793,767	1,184,793,767

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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