Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of fair value measurements of derivative liability on a recurring basis

	Valuation techniques	Unobservable inputs	Range of rates
Derivative liability in 2020 related to Streeterville convertible bond	Binomial model	Expected term	0.84-1.00
		Risk-free interest rate	0.07%-0.12%
		Expected volatility	111.94%-119.90%
		Expected dividend yield	0

Fair value measurements of warrants

	Valuation techniques	Unobservable inputs	Range of rates
Warrants issued with ordinary shares in 2020	Binomial model	Expected term Risk-free interest rate Expected volatility Expected dividend yield	5 years 0.58%-0.77% 82.20%-82.36% 0