Options and warrants (Details 1) - 6 months ended Jun. 30, 2015 - USD ($) None in scaling factor is -9223372036854775296	Total
Shares
Outstanding at December 31, 2014	120,400
Options and warrants granted	4,500,000
Options and warrants cancelled or expired	6,650
Outstanding at June 30, 2015	4,613,750
Exercisable at June 30, 2015	4,613,750
Weighted Average Exercise
Outstanding at December 31, 2014	$ 7.00
Options and warrants granted	0.16
Options and warrants cancelled or expired	8.23
Outstanding at June 30, 2015	0.33
Exercisable at June 30, 2015	$ 0.33
Weighted Average Remaining Contractual Life
Outstanding at December 31, 2014	2 years 3 months 7 days
Options and warrants granted	5 years
Outstanding at June 30, 2015	4 years 10 months 24 days
Exercisable at June 30, 2015	4 years 10 months 24 days
Aggregate Intrinsic Value
Outstanding at December 31, 2014
Options and warrants granted
Options and warrants cancelled or expired
Outstanding at June 30, 2015
Exercisable at June 30, 2015