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Income Taxes (Details)
9 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Income Tax (Textual)    
Deferred income tax assets valuation allowance percentage 100.00%strp_DeferredIncomeTaxAssetsValuationAllowancePercentage 100.00%strp_DeferredIncomeTaxAssetsValuationAllowancePercentage