Net Loss Per Share - Calculation of diluted loss per share (Details) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Stock option
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	4,355	9,355
RSUs
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	7,019
Warrant
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	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	12,000
Convertible preferred stock
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		94,360