Goodwill and intangible assets - Company's other intangible assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Goodwill and intangible assets
Gross Carrying Amount	$ 32,997	$ 32,997
Accumulated Amortization	18,925	18,226
Net	14,072	14,771
Covenant not to compete
Goodwill and intangible assets
Gross Carrying Amount	870	870
Accumulated Amortization	819	798
Net	$ 51	72
Covenant not to compete | Minimum
Goodwill and intangible assets
Amortization Period (in years)	6 years
Covenant not to compete | Maximum
Goodwill and intangible assets
Amortization Period (in years)	10 years
Customer relationships
Goodwill and intangible assets
Gross Carrying Amount	$ 31,560	31,560
Accumulated Amortization	17,818	17,151
Net	$ 13,742	14,409
Customer relationships | Minimum
Goodwill and intangible assets
Amortization Period (in years)	3 years
Customer relationships | Maximum
Goodwill and intangible assets
Amortization Period (in years)	12 years
Above market leases
Goodwill and intangible assets
Amortization Period (in years)	13 years
Gross Carrying Amount	$ 567	567
Accumulated Amortization	288	277
Net	$ 279	$ 290