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Income Taxes - Provision (Benefit) for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Current:
Federal	$ (970)	$ 5,390
State	(115)	1,075
Total Current	(1,085)	6,465
Deferred:
Federal	309	1,171
State	31	166
Total Deferred	340	1,337
Provision (benefit) for income taxes	$ (745)	$ 7,802

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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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