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Income taxes (Details) - Benefit (provision) for income taxes were at rates different from U.S. federal statutory rates
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12 Months Ended | ||
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Jul. 31, 2013
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Jul. 31, 2012
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Jul. 31, 2011
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| Benefit (provision) for income taxes were at rates different from U.S. federal statutory rates [Abstract] | |||
| Federal statutory rate | 34.00% | 34.00% | 34.00% |
| Expenses not deductible for income tax return purposes | (0.90%) | (0.50%) | (2.30%) |
| State income taxes, net of benefit of federal tax deduction | 2.50% | 0.90% | 1.00% |
| Change in valuation allowance | (32.70%) | (23.20%) | (34.60%) |
| Impairment of goodwill | (7.10%) | ||
| Reversal of tax reserve | 0.10% | ||
| Other | 0.90% | (0.10%) | 0.70% |
| 3.80% | 4.00% | (1.10%) | |
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- Details
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- Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to reversal of tax reserve during the period. No definition available.
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to impairment loss. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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