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Income Taxes Deferred Tax Assets, Net Classification (Details) (USD $)	Apr. 30, 2012	Apr. 30, 2011
Deferred Tax Assets, Net of Valuation Allowance, Current	$ 116,000	$ 250,000
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	492,000	358,000
Deferred Tax Assets, Net of Valuation Allowance	$ 608,000	$ 608,000

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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- Definition

Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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