Net Loss Per Share - Calculation of diluted loss per share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted loss per share, as their effect would be anti-dilutive (in shares)	3,718	4,235	3,718	4,235
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted loss per share, as their effect would be anti-dilutive (in shares)	12,998	5,958	12,998	3,546
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted loss per share, as their effect would be anti-dilutive (in shares)	9,876	9,876	9,876	9,876
Convertible notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computation of diluted loss per share, as their effect would be anti-dilutive (in shares)	12,000	12,000	12,000	12,000