Net Loss Per Share - Basic and Diluted Loss Per Common Share (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Net loss	$ (5,103,256)	$ (2,807,072)	$ (8,511,704)	$ (2,881,466)
Basic and diluted wtd avg common shares outstanding	126,462,677	104,551,742	126,285,677	104,105,156
Basic and diluted net loss per common share	$ (0.04)	$ (0.03)	$ (0.07)	$ (0.03)