Income Taxes (Reconciliation Of Effective Tax Rate, Percentage) (Details)	12 Months Ended
Jul. 31, 2014	Jul. 31, 2013
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal tax benefit at the expected statutory rate	34.00%	34.00%
State income tax, net of federal tax benefit	3.40%	5.80%
Expired net operating loss carryforwards	(0.80%)	(9.70%)
Other	(8.40%)	(2.90%)
Valuation allowance	(28.20%)	(27.20%)
Income tax benefit - effective rate	0.00%	0.00%

Effective Income Tax Rate Reconciliation Expired Net Operating Loss Carryforwards

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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.

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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).

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