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Consolidated Income Tax Expense (benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current
Federal	$ 0	$ 14	$ (163)
State	174	157	112
Foreign	141	0	0
Deferred
Federal	(46,378)	0	0
State	(10,871)	0	0
Foreign	(34)	0	0
Total consolidated (benefit) expense	$ (56,968)	$ 171	$ (51)

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- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

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