Derivative financial instruments - Schedule of derivative instruments designated in a cash flow hedging relationship recognized (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Derivatives Designated in Cash Flow Hedging Relationship - Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swaps	$ 4,194	$ 806	$ 4,583	$ 3,764
Location of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) - Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	$ 678	$ (444)	$ 1,175	$ (530)

Other Comprehensive Income Gain Loss Recognized On Derivatives Arising During Period Before Tax.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4E

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4D
-Subparagraph (b)
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4D

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-Name Accounting Standards Codification
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-Section 50
-Paragraph 4C
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C

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