The average return on equity period used for conditions for vesting of performance-based restricted stock units.

No definition available.

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- Definition

The cumulative diluted earnings per share period used for conditions for vesting of performance-based restricted stock units.

+ References

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The number of grants made to each director 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).

+ References

No definition available.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Amount of cost (reversal of cost) for other postretirement benefits. Excludes pension benefits.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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 weighted average fair value at grant date for nonvested equity-based awards issued 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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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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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Employee benefit and stock plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		6 Months Ended
	Jan. 30, 2026	Jan. 31, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Performance-based restricted stock units - 2022
Share-based Compensation Arrangement by Share-based Payment Award
Increase (decrease) in accumulated benefit obligation					$ 491
Performance-based restricted stock units - 2024
Share-based Compensation Arrangement by Share-based Payment Award
Increase (decrease) in accumulated benefit obligation					$ 213
2023 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Common stock available for grant as awards			135,259		135,259
Net compensation expense			$ 218	$ 204	$ 430	$ 512
2023 Plan \| Performance-based restricted stock awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Shares or units vesting period					2 years
Cumulative diluted earnings per share period used for conditions for vesting of performance-based restricted stock units					2 years
Average return on equity period used for conditions for vesting of performance-based restricted stock units					2 years
2023 Plan \| Performance-based restricted stock awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Shares or units vesting period					3 years
Cumulative diluted earnings per share period used for conditions for vesting of performance-based restricted stock units					3 years
Average return on equity period used for conditions for vesting of performance-based restricted stock units					3 years
2023 Plan \| Performance-based restricted stock awards \| Share-Based payment arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award
Granted shares					15,660	39,249
2023 Plan \| Time based restricted stock awards \| Share-Based payment arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award
Granted shares					12,678	17,107
2023 Plan \| Restricted stock and restricted stock units in aggregate issued in 2026
Share-based Compensation Arrangement by Share-based Payment Award
Shares or units vesting period					3 years
2023 Plan \| Restricted stock and restricted stock units in aggregate issued in 2025
Share-based Compensation Arrangement by Share-based Payment Award
Shares or units vesting period					5 years
2023 Plan \| Restricted stock and restricted stock units in aggregate issued in 2024
Share-based Compensation Arrangement by Share-based Payment Award
Shares or units vesting period					7 years
2023 Plan \| Restricted stock and restricted stock units in aggregate issued in 2023
Share-based Compensation Arrangement by Share-based Payment Award
Shares or units vesting period					7 years
2023 Plan \| Director \| Restricted Stock \| Share-Based payment arrangement, Nonemployee
Share-based Compensation Arrangement by Share-based Payment Award
Granted shares	4,455	3,080
Stock awards fair value	$ 50.61	$ 53.64
Grants in period, Per director shares	297
Net compensation expense			56	56	$ 113	$ 113
2017 Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized compensation expense			3,600		$ 3,600
Remaining period over which the shares/cost will be expensed					3 years 3 months 18 days
Supplemental Executive Retirement Plans ("SERP")
Share-based Compensation Arrangement by Share-based Payment Award
Salaries and employee benefits expense			$ 600	$ 500	$ 1,300	$ 1,200