Description of business and going concern (Detail) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012	Dec. 31, 2012
Description Of Business And Going Concern [Abstract]
Accumulated deficit	$ (13,669,395)	[1]		$ (13,669,395)	[1]		$ (13,655,027)
Working capital deficiency	(75,866)			(75,866)
Net loss	(2,946)		(4,041)	(14,368)		(16,570)
Net cash used in operating activities				$ (20,849)		$ (17,650)

[1] (Unaudited)