Common stock and warrants (Details Narrative) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Shares issued pursuant to tender offer		17,895,859
Shares of common stock issued	100,000	1,669,205
Expense of shares issued for services rendered	$ 2,000	$ 132,247