Net Loss Per Share (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net Loss Per Share [Line Items]
Net loss attributable to common shareholders	$ (8,196,902)	$ (11,733,549)
Basic and diluted:
Weighted average shares outstanding	6,144,778	3,586,741
Less weighted average unvested restricted shares outstanding	(24,014)	(143,372)
Shares used in calculation of basic and diluted net loss per common share	6,120,764	3,443,369
Net loss per common share: Basic and diluted	$ 1.34	$ 3.41