Leases - Weighted average lease term and discount rate (Details)	Dec. 31, 2022	Dec. 31, 2021
Leases
Weighted average remaining lease term in years	4 years 1 month 20 days	5 years 1 month 20 days
Weighted average remaining lease term in years	2 years 3 months	3 years 3 months
Weighted average discount rate	5.50%	5.50%
Weighted average discount rate	6.40%	6.40%