Reconciliation of Statutory Federal Income Tax Rate to Actual Effective Tax Rate (Detail)	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Federal income tax rate to the actual effective income tax rate for continuing operations
Federal tax (benefit) rate	34.00%	34.00%
Increase (decrease) in taxes resulting from:
State income taxes	5.80%	5.80%
Change in valuation allowance	(38.10%)	(34.60%)
Permanent differences	(1.70%)	(5.30%)
Minimum tax	(2.60%)	(0.20%)
Effective income tax rate, continuing operations	(2.60%)	(0.30%)

Increase decrease in taxes resulting from.

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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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