Schedule of Assets at Fair Value (Details) (USD $)	3 Months Ended
Oct. 31, 2012
Fair Value Of Financial Instruments Fair Value, Assets Measured On Recurring Basis 1	$ 36,296
Fair Value Of Financial Instruments Fair Value, Assets Measured On Recurring Basis 2	0
Fair Value Of Financial Instruments Fair Value, Assets Measured On Recurring Basis 3	0
Fair Value Of Financial Instruments Fair Value, Assets Measured On Recurring Basis 4	36,296
Fair Value Of Financial Instruments Fair Value, Assets Measured On Recurring Basis 5	$ 15,892

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