Discontinued Operations - Condensed Consolidated Statements of Operations (Detail) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Operating income (loss) from discontinued operations	$ (21,000)	$ (84)	$ (268)	$ (215,000)	$ (373,000)	$ (350,000)
Provision for income taxes	0			0	0	0
Valuation provision ("impairment") on assets for sale		(2,300,000)			(2,300,000)
Income taxes on discontinued operations	0			0	0	0
Net income (loss) from discontinued operations	$ (21,000)			$ (215,000)	$ (2,673,000)	$ (350,000)

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of tax expense or benefit on gain (loss), not previously recognized, resulting from the sale of a business component.

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Amount of operating income or loss attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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