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Income Taxes - Provision for Income Taxes Charged to Income from Continuing Operations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Provision For Income Taxes [Line Items]
Current taxes	$ 1,263	$ 77,422
Deferred taxes	1,586
Total taxes	$ 2,849	$ 77,422

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The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations.

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The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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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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