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Commitments and Contingencies (Details) (Change in Control Agreement [Member])
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6 Months Ended |
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Jan. 31, 2015
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Change in Control Agreement [Member]
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| Change in Control [Line Items] | |
| Time frame for agreement to expire after the change of control | 1 year |
| Time frame to enter into a separation agreement after termination | 30 days |
| Number of years of base salary to be paid per agreement | 1 year |
| Number of monthly equal installments to be paid after termination | 12 months |
| Time frame for all awards to be exercised after termination | 1 year |