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Fair Value of Financial Instruments (Details) (USD $)
6 Months Ended
Jan. 31, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning balance $ 9,000us-gaap_DerivativeLiabilitiesCurrent
Adjustments to estimated fair value (4,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
Ending balance 5,000us-gaap_DerivativeLiabilitiesCurrent
Warrant [Member]  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning balance 9,000us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_WarrantMember
Adjustments to estimated fair value (4,000)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_WarrantMember
Ending balance $ 5,000us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_WarrantMember