Unaudited Proforma Revenue and Loss From Operations (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Revenue	$ 11,033,700	$ 11,902,800
Loss from operations	(9,573,300)	(11,588,600)
Net loss attributable to common shareholders	$ (28,046,500)	$ (15,309,400)
Basic and diluted net loss per share	$ (0.94)	$ (0.58)