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Discontinued Operations - Summary Results of Operations for Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Revenue	$ 274	$ 56,060
Pretax (loss) income	(10,698)	5,340
Income tax provision	0	749	[1]
(Loss) income from discontinued operations, net of tax	$ (10,698)	$ 4,591
[1] Due to the valuation allowance against our net deferred taxes, there is no income tax benefit reported for the quarter ended March 31, 2014.

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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