Stock-Based Compensation Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Common Stock, Market Price	0.05
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options	$ 838,217
Stock Options Granted, To Purchase Common Shares By Employees and Directors	5,246,667	3,100,000
Stock Options Granted, To Purchase Common Shares By Non - Employees	0	200,000
Employee and Director
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 461,000	262,000
Nonemployees
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 0	10,000