Retirement Plans (Pension Plans, Narrative) (Details) - USD ($)	12 Months Ended
Jan. 31, 2025	Jan. 31, 2024
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Liability for Future Policy Benefit, after Reinsurance	$ 900,000	$ 1,300,000
Assets held in Rabbi Trust	8,400,000	5,800,000
Contribution amount, Qualified plan and VIP plan	623,000	$ 676,000
Estimated contributions to qualified pension plans for 2024	389,000
Accumulated other comprehensive loss, pension plans	$ 422,000
Combined Employee Retirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage of assets held in trust (less than)	25.50%
Combined Employee Retirement Plans [Member] \| Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	5.55%	5.15%
Combined Employee Retirement Plans [Member] \| Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage of trust assets managed	72.00%
Discount rate	5.60%	5.20%
VIP Retirement Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit of average compensation	50.00%
Benefit of average compensation period	5 years
Cash surrender value	$ 562,000	$ 620,000
Debt Securities [Member] \| Combined Employee Retirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Short-term investment funds	26.30%	26.00%

Amount, after tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

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Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one 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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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Amount, after effect of reinsurance, of liability for future policy benefit.

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Benefit of average compensation years.

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Defined Benefit Plan, Cash Surrender Amount

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Defined Benefit Plan, Percentage of Assets managed by Investment Advisors

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Defined Benefit Plan, Percentage of Assets Held in Trust

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