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Income Taxes - Components of Income Tax Expenses (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Current year provision:
Federal	$ 0	$ 30	$ 0	$ 60
State	0	0	0	0
Deferred tax expense	583	719	838	788
Valuation allowance on deferred taxes	(583)	(719)	(838)	(788)
Net income tax expense	$ 0	$ 30	$ 0	$ 60

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.