Warrants (Details) - 6 months ended Jun. 30, 2015 - shares	Total
Outstanding, Beginning	26,769,000
Warrants exercised	(18,389,000)
Outstanding, End of period	8,380
January 2012 warrants [Member]
Outstanding, Beginning	650,000
Warrants exercised
Outstanding, End of period	650,000
Expiration date	Jan. 11, 2016
February 2012 warrants [Member]
Outstanding, Beginning	455,000
Warrants exercised
Outstanding, End of period	455,000
Expiration date	Mar. 01, 2016
June 2013 (A) warrants [Member]
Outstanding, Beginning	1,864,000
Warrants exercised	(864,000)
Outstanding, End of period	1,000,000
Expiration date	Apr. 25, 2018
June 2013 (B) warrants [Member]
Outstanding, Beginning	1,000,000
Warrants exercised
Outstanding, End of period	1,000,000
Expiration date	Feb. 28, 2016
August 2013 warrants [Member]
Outstanding, Beginning	10,000,000
Warrants exercised	(10,000,000)
Outstanding, End of period
Expiration date	Aug. 26, 2023
October 2013 warrants [Member]
Outstanding, Beginning	200,000
Warrants exercised	(200,000)
Outstanding, End of period
Expiration date	Oct. 18, 2018
Series A 2013 warrants [Member]
Outstanding, Beginning	7,100,000
Warrants exercised	(6,325,000)
Outstanding, End of period	775,000
Expiration date	Oct. 24, 2023
January 2014 warrants [Member]
Outstanding, Beginning	5,500,000
Warrants exercised	(1,000,000)
Outstanding, End of period	4,500,000
Expiration date	Jan. 16, 2024