Other intangible assets (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net (excluding goodwill)	$ 16,334	$ 21,389	$ 17,532
Amortization of intangible assets	1,200	1,200
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	28,990	28,990	28,990
Intangible assets, less accumulated amortization	14,680	10,846	13,724
Intangible assets, net (excluding goodwill)	14,310	18,144	15,266
Noncompete agreements
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	4,331	4,591	4,591
Intangible assets, less accumulated amortization	3,405	3,016	3,529
Intangible assets, net (excluding goodwill)	926	1,575	1,062
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	2,479	6,969	5,280
Intangible assets, less accumulated amortization	1,381	5,299	4,076
Intangible assets, net (excluding goodwill)	$ 1,098	$ 1,670	$ 1,204