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Income taxes (Detail) - The 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, 2012
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Jul. 31, 2011
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Jul. 31, 2010
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| Federal statutory rate | 34.00% | 34.00% | 34.00% |
| Expenses not deductible for income tax return purposes | (0.50%) | (2.30%) | (1.50%) |
| State income taxes, net of (benefit) of federal tax deduction | 0.90% | 1.00% | 0.10% |
| Change in valuation allowance | (23.20%) | (34.60%) | (32.30%) |
| Impairment of goodwill | (7.10%) | ||
| Reversal of tax reserve | 0.10% | 0.50% | |
| Other | (0.10%) | 0.70% | (0.70%) |
| 4.00% | (1.10%) | 0.10% | |
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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
A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 changes in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of the differences between the effective income tax rate and domestic federal statutory income tax rate attributable to all nondeductible expenses under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 nondeductible impairment losses under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 all other items not otherwise listed in the existing taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense or benefit, net of the federal tax benefit (expense) thereon, recorded during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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