Results of Operations of PVG (Detail) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 303,206
Income from discontinued operations before taxes	36,832
Income tax expense	(3,350)	[1]
Income from discontinued operations, net of taxes	$ 33,482	[2]

[1] Determined by applying the effective tax rate attributable to discontinued operations to the income from discontinued operationsless noncontrolling interests that are fully attributable to PVG's operations.

[2] For purposes of determining earnings per share, net income attributable to noncontrolling interests, which is fully attributable to PVG's operations, is applied against income from discontinued operations.