Convertible Debentures - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended			1 Months Ended		1 Months Ended
	Jan. 04, 2012	Mar. 31, 2013	Dec. 31, 2012	Jan. 12, 2012	Jan. 12, 2012 Related Parties	Jan. 12, 2012 Convertible Debt	Jan. 12, 2012 Convertible Debt Related Parties
Debt Instrument [Line Items]
Purchase price				$ 500,000
Convertible debenture issued		2,012,000			250,000
Convertible debenture, interest rate							8.00%
Convertible debenture, maturity date							Dec. 31, 2013
Warrant exercise price per share					0.01
Common stock, par value	$ 0.01	$ 0.01	$ 0.01		$ 0.01
Expiration date of warrants	Dec. 31, 2013				Dec. 31, 2013
Warrants issued	15,000,000				35,000,000
Conversion price of debt into common stock					55.00%
Number of trading days used for calculation of conversion price					3 days
Debt discount		1,348,000	1,798,000			250,000
Interest expense		$ 449,000