Loans payable - Components (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Apr. 13, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total loans payable, current	$ 30,006		$ 1,671
Total loans payable, noncurrent	$ 9,108		7,811
Line of credit | Term Loan
Debt Instrument [Line Items]
Interest rate	11.00%	10.00%
Total loans payable, current	$ 29,800		0
Other notes payable | TPC Loan
Debt Instrument [Line Items]
Total loans payable, current	206		206
Total loans payable, noncurrent	$ 274		518
Other notes payable | Directors and Officers Insurance financing
Debt Instrument [Line Items]
Interest rate	4.24%
Total loans payable, current	$ 0		1,449
Other notes payable | Other loans
Debt Instrument [Line Items]
Total loans payable, current	0		16
Other notes payable | SIF Loan
Debt Instrument [Line Items]
Total loans payable, noncurrent	$ 8,834		$ 7,293