Goodwill and intangible assets - Company's other intangible assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Goodwill and intangible assets
Gross Carrying Amount	$ 32,997	$ 32,997
Accumulated Amortization	14,735	12,640
Net	18,262	20,357
Covenant not to compete
Goodwill and intangible assets
Gross Carrying Amount	870	870
Accumulated Amortization	689	623
Net	$ 181	247
Covenant not to compete | Maximum
Goodwill and intangible assets
Amortization Period (in years)	10 years
Covenant not to compete | Minimum
Goodwill and intangible assets
Amortization Period (in years)	6 years
Customer relationships
Goodwill and intangible assets
Gross Carrying Amount	$ 31,560	31,560
Accumulated Amortization	13,825	11,829
Net	$ 17,735	19,731
Customer relationships | Maximum
Goodwill and intangible assets
Amortization Period (in years)	12 years
Customer relationships | Minimum
Goodwill and intangible assets
Amortization Period (in years)	3 years
Above market leases
Goodwill and intangible assets
Amortization Period (in years)	13 years
Gross Carrying Amount	$ 567	567
Accumulated Amortization	221	188
Net	$ 346	$ 379