Summary of Preferred Stock Terms (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Preferred Stock, Liquidation Value	$ 2,871,000
Series A Convertible Preferred Stock [Member]
Preferred Stock, Liquidation Value	212,625
Preferred Stock, Conversion Price	$ 10,303
Preferred Stock, Conversion Rate	0.00044%
Preferred Stock, Voting Rights	None
Preferred Stock, Dividends	0.00%
Preferred Stock, Conversion Period	Any time
Series B Convertible Preferred Stock [Member]
Preferred Stock, Liquidation Value	375,000
Preferred Stock, Conversion Price	$ 1,000
Preferred Stock, Conversion Rate	0.004%
Preferred Stock, Voting Rights	None
Preferred Stock, Dividends	10.00%	10.00%
Preferred Stock, Conversion Period	Any time
Preferred Stock, Cumulative and undeclared dividends in arrears	520,665
Series C Convertible Preferred Stock [Member]
Preferred Stock, Liquidation Value	115,000
Preferred Stock, Conversion Price	$ 600
Preferred Stock, Conversion Rate	0.005%
Preferred Stock, Voting Rights	None
Preferred Stock, Dividends	10.00%	10.00%
Preferred Stock, Conversion Period	Any time
Preferred Stock, Cumulative and undeclared dividends in arrears	151,413
Series D Convertible Preferred Stock [Member]
Preferred Stock, Liquidation Value	525,000
Preferred Stock, Conversion Price	$ 1,000
Preferred Stock, Conversion Rate	0.01%
Preferred Stock, Voting Rights	None
Preferred Stock, Dividends	10.00%	10.00%
Preferred Stock, Conversion Period	Any time
Preferred Stock, Cumulative and undeclared dividends in arrears	660,000
Series E Convertible Preferred Stock [Member]
Preferred Stock, Liquidation Value	418,488
Preferred Stock, Conversion Price	$ 800.00
Preferred Stock, Conversion Rate	0.0275%
Preferred Stock, Voting Rights	Equal in all respects to holders of common shares
Preferred Stock, Dividends	10.00%	10.00%
Preferred Stock, Conversion Period	Any time
Preferred Stock, Cumulative and undeclared dividends in arrears	$ 558,173