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Income And Deferred Taxes (Components Of Income Tax Expense) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Tax Expenses [Line Items]
Tax (benefit)/expense at statutory rate			$ 33,864
Tax rate differences			(15,259)
Valuation allowance for net operating losses			2,611
Permanent differences	218,068		(2,721)
Income tax (benefit)/expense	35,276	(26,717)	18,495
Restated [Member]
Income Tax Expenses [Line Items]
Tax (benefit)/expense at statutory rate	(445,922)	(56,582)
Tax rate differences	201,837	22,293
Valuation allowance for net operating losses	61,293	29,675
Permanent differences	218,068	(22,103)
Income tax (benefit)/expense	$ 35,276	$ (26,717)

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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- Definition

The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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- Definition

The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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