Share-Based Payments - 2020 Share Incentive Plan (Details) - 2020 Share Incentive Plan $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) item $ / shares shares	Mar. 04, 2020 shares
Share-Based Payments
Options granted during the period		3,090,750
Exercise price (in dollars per share) | $ / shares		$ 0.71
Share-based compensation expense | $	$ 8	$ 72
Options
Granted (in shares)		3,090,750
Outstanding at end of year (in shares)	3,090,750	3,090,750
Weighted average exercise price in $ per share
Granted (in dollars per share) | $ / shares		$ 0.71
Outstanding balance at end of year (in dollars per share) | $ / shares	$ 0.71	0.71
Weighted-average grant date fair value (in dollars per share) | $ / shares		$ 0.44
Ordinary Shares
Share-Based Payments
Remaining number of shares available for grant	7,548,354	7,548,354
Ordinary Shares | Maximum
Share-Based Payments
Shares reserved for future issuance			9,300,000
Stock Options
Additional disclosures
Weighted-average remaining contractual life		9 years 10 months 24 days
Total unrecognized compensation related to unvested options | $	$ 1,300	$ 1,300
Recognition period		1 year 3 months 18 days
Stock Options | Minimum
Fair Value Assumptions
Expected volatility (as a percent)		73.30%
Expected term of options (in years)		5 years 6 months
Risk-free interest rate (as a percent)		0.30%
Stock Options | Maximum
Fair Value Assumptions
Expected volatility (as a percent)		74.40%
Expected term of options (in years)		6 years 1 month 6 days
Risk-free interest rate (as a percent)		0.40%
Restricted Stock Units ("RSUs") | Employees
Share-Based Payments
Restricted stock granted during the period		459,869
Number of vesting periods | item		3
Vesting period		6 months
Performance Based Restricted Stock Unit | Employees
Share-Based Payments
Restricted stock granted during the period		431,250
Grant date fair value | $ / shares		$ 0.53
Share-based compensation expense | $	45	$ 45
Additional disclosures
Total unrecognized compensation related to unvested RSUs | $	$ 500	$ 500
Recognition period		1 year 2 months 12 days