Leases - Weighted average lease term and discount rate (Details)	Jun. 30, 2023	Dec. 31, 2022
Leases
Weighted average remaining lease term in years	3 years 7 months 20 days	4 years 1 month 20 days
Weighted average remaining lease term in years	1 year 9 months	2 years 3 months
Weighted average discount rate	5.50%	5.50%
Weighted average discount rate	6.40%	6.40%