Description of business and going concern (Detail) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Description Of Business And Going Concern [Abstract]
Accumulated deficit	$ (13,666,449)	[1]		$ (13,666,449)	[1]		$ (13,655,027)	[2]
Working capital deficiency	(74,420)			(74,420)
Net loss	(4,829)		(6,821)	(11,421)		(12,530)
Net cash used in operating activities				$ (18,146)		$ (17,650)

[1] (Unaudited)

[2] Derived from Audited Financial Statements.