Share-based payments (Details)	9 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares
Shares Outstanding, granted	0
Forfeited or expired	13,289,984
Weighted Average Exercise Price, granted | $ / shares	$ 0
Nonemployee Common stock warrants - Service and performance conditions [Member]
Shares Outstanding, Beginning	11,916,503
Shares Outstanding, granted	100,000
Forfeited or expired	1,266,503
Shares Outstanding, Ending	10,750,000
Shares Exercisable, Ending	10,750,000
Weighted Average Exercise Price outstanding, Beginning | $ / shares	$ 0.05
Weighted Average Exercise Price, granted | $ / shares	0.08
Weighted Average Exercise Price forfeited and expired | $ / shares	0.30
Weighted average exercise price outstanding, Ending | $ / shares	0.02
Weighted average exercise price exercisable, Ending | $ / shares	$ 0.02
Outstanding, Begining Balance	1 year 10 months 24 days
Outstanding, Ending Balance	2 years
Exercisable, Ending	2 years
Aggregate intrinsic value outstanding beginning | $	$ 10,500
Aggregate intrinsic value outstanding ending | $	259,580
Aggregate intrinsic value exercisable ending | $	$ 259,580