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Available For Sale Investments Table (Details) (USD $)	Aug. 31, 2012	May 31, 2012
Investment in trust funds	$ 315,676	$ 315,689

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Name:	fil_rtasInvestmentInTrustFunds
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant