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Schedule of Effective Income Tax Rate Reconciliation (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Income Tax Rate Reconciliation [Line Items]
Statutory federal income tax rate	40.00%	40.00%
Increase in valuation allowance	(40.00%)	(40.00%)
Effective tax rate	0.00%	0.00%

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.

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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.

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