Issuances of common stock and warrants (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Class of Stock [Line Items]
Shares issued for services	450,000	0	22,989	457,167
Issuance of common stock for services			$ 20,000	$ 1,055,502
Recognized stock based compensation expense	43,002	0	72,000	1,055,502
Net proceeds from issuance of common stock, warrants and options			10,472,003
Financing and issuance fees			$ 1,221,719
Exercise price					$ 2.25
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Shares issued for cash	0		4,072,426
Warrants One [Member]
Class of Stock [Line Items]
Warrants issued	0		16,289,704
Exercise price	$ 1.10		$ 1.10
Warrants Two [Member]
Class of Stock [Line Items]
Warrants issued			1,628,971
Exercise price	$ 1.265		$ 1.265