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Income Taxes - Schedule of Income (Loss) from Continuing Operations before Income Tax, Domestic and Foreign (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
US operations	$ (13,505,266)	$ (14,317,608)	$ (1,775,053)
Foreign operations	(6,624,018)	(8,097,032)	(3,454,672)
Total	$ (20,129,284)	$ (22,414,640)	$ (5,229,725)

Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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