v2.4.0.6

Reconciliation of Statutory Federal Income Tax Rate to Effective Tax Rate (Parenthetical) (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Taxes [Line Items]
Federal statutory rate	35.00%	35.00%	35.00%	35.00%

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- Definition

US Federal Statutory Income Tax Rate

+ References

No definition available.

+ Details

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