Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Foreign tax expense	$ 147,000		$ 810,000
Foreign deferred tax expense (benefits)	(168,000)	$ 10,000	198,000	$ (33,000)
Foreign current tax expense (benefits)	315,000		612,000
U.S. federal income tax benefits	0	0	0	0
U.S. state income tax benefits	$ 0	$ 0	$ 0	$ 0

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

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-Name Accounting Standards Codification

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

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