Long-term debt, net - Finance Expense Related to the Convertible Notes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Amortization of debt discount	$ 3,101	$ 3,260	$ (2,176)
the “Notes” | Convertible Debt
Debt Instrument [Line Items]
Amortization of debt issuance costs	3,339	333
Amortization of debt discount	0	3,605
Total finance expense recognized	$ 3,339	$ 3,938