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Income Taxes - Components of Income Tax Expenses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Current year provision:
Federal	$ 0	$ 30
State	0	0
Deferred tax expense	255	69
Valuation allowance on deferred taxes	(255)	(69)
Net income tax expense	$ 0	$ 30

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.