Stockholders' deficit (Summary Of Warrant Activity) (Details) (USD $)		1 Months Ended	6 Months Ended
	Dec. 31, 2011	Dec. 31, 2008 Warrant [Member]	Jun. 30, 2012 Warrant [Member]	Dec. 31, 2010 Warrant [Member]
Shares
Outstanding at December 31, 2011	150,000		150,000
Exercised, granted, forfeited of expired		(150,000)	(150,000)
Outstanding at March 31, 2012	150,000
Exercisable at March 31, 2012
Weighted- Average Exercise Price
Exercised, granted, forfeited or expired			$ 0.05
Outstanding at March 31, 2012				$ 0.05
Exercisable at March 31, 2012
Weighted- Average Remaining Contractual Term
Exercised, granted, forfeited or expired			1 year
Outstanding at March 31, 2012
Exercisable at March 31, 2012
Aggregate Intrinsic Value
Outstanding at March 31, 2012
Exercisable at March 31, 2012