Income taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Contingency [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase	$ 24,900	$ 31,500
Valuation Allowance Deferred Tax Assets Increase Continuing Operations		28,400
Valuation Allowance Deferred Tax Assets Increase paid in capital		3,100
Net change in total valuation allowance	24,900	31,500
Pre-tax income (loss) from company's operations	(99,178)	(106,420)	$ (16,007)
Income tax expense (benefit)	435	169	(83)
Unrecognized tax benefits	1,421	717	$ 81
Unrecognized Tax Benefits, Period Increase (Decrease)	0	0
Unrecognized tax benefits impact effective income tax rate	900	200
Income Tax Interest and Penalties Accrued	0	$ 0
R&D [Member]
Income Tax Contingency [Line Items]
Tax Credit Carryforward, Amount	$ 4,300
Tax Credit Carryforward, Expiration Date	Jan. 01, 2038
State [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	$ 84,600
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2037
NOL carryback refund	$ 84,600
Federal [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards	232,100
NOL carryback refund	$ 232,100