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Income Taxes - Components of Income Tax Benefit (Provision) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ (51)us-gaap_CurrentFederalTaxExpenseBenefit	$ 231us-gaap_CurrentFederalTaxExpenseBenefit	$ (5,210)us-gaap_CurrentFederalTaxExpenseBenefit
State	(196)	(264)	(253)
Foreign	0us-gaap_CurrentForeignTaxExpenseBenefit	0us-gaap_CurrentForeignTaxExpenseBenefit	(10)us-gaap_CurrentForeignTaxExpenseBenefit
Deferred:
State	9	36	(49)
Income Tax Benefit (Provision), Continuing Operations	$ (238)	$ 3	$ (5,522)

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