Rights Offering and debt obligations - Schedule of Balance of Term Loan (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Principal value		$ 15,000
Net of debt discount and accretion of final payment		257
Long-term debt, current and noncurrent	$ 0	15,257
Less: Long-term debt, current portion		(3,333)
Long-term debt, noncurrent portion		$ 11,924

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