Summary of changes in restricted stock awards (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock	132,922	109,454
Restricted stock	$ 27.44	$ 26.47
Restricted stock	2 years 10 months 28 days	2 years 9 months 18 days
Restricted stock	$ 3,647	$ 2,897
Restricted stock, vested	(8,684)
Restricted stock	$ 29.16
Restricted stock	$ (253)
Time Based Restricted Awards Granted [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock	15,904
Restricted stock	$ 31.44
Restricted stock	$ 500
Performance Based Restricted Awards Granted [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Restricted stock	16,248
Restricted stock	$ 31.44
Restricted stock	$ 503

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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