Loans payable - Components (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Apr. 13, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total loans payable, noncurrent	$ 8,473		$ 7,811
Total loans payable, current	$ 15,910		1,671
Line of credit | Term Loan
Debt Instrument [Line Items]
Interest rate	11.00%	10.00%
Total loans payable, current	$ 15,700		0
Other notes payable | SIF Loan
Debt Instrument [Line Items]
Total loans payable, noncurrent	8,234		7,293
Other notes payable | TPC Loan
Debt Instrument [Line Items]
Total loans payable, noncurrent	239		518
Total loans payable, current	$ 210		206
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