Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Income Taxes [Line Items]
Net operating loss carry forwards	$ 14,902,000	$ 14,902,000
Net operating loss carry forwards, expiration date		2035
Net operating loss carry forwards, valuation allowance	5,067,000	$ 5,067,000		$ 4,732,000
Net operating loss carry forwards, increase in the valuation allowance	66,000	335,000
Deferred Tax Liabilities, Net, Noncurrent	$ 1,310,000	$ 1,310,000
Deferred Foreign Income Tax Expense (Benefit)				$ 0
China income tax
Income Taxes [Line Items]
Applicable income tax rate		25.00%	25.00%